Готові списки джерел за темами / Broadband and LTE

Добірка наукової літератури з теми "Broadband and LTE"

Автор: Grafiati

Опубліковано: 14 березня 2023

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Статті в журналах з теми "Broadband and LTE"

WAHYUDIN, ADE, MUNTAQO ALFIN AMANAF, and ITA KUSMIASIH RATNASARI. "Perancangan dan Analisis LTE Advanced 850 Mhz untuk Meningkatkan Penetrasi Mobile Broadband di Indonesia." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 7, no. 1 (January 24, 2019): 57. http://dx.doi.org/10.26760/elkomika.v7i1.57.

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ABSTRAKLayanan mobile broadband LTE telah berkembang di Indonesia, namun penyebarannya belum merata. Selain itu, sumber daya frekuensi semakin terbatas seiring dengan meningkatnya trafik layanan broadband. Maka untuk mengatasi hal tersebut, spektrum frekuensi 850 MHz dapat diterapkan pada teknologi LTE advance untuk meningkatkan penetrasi mobile broadband. Maka, untuk mengukur tingkat penetrasi, sehingga dilakukan perancangan LTE Advance 850 MHz yang dibandingkan dengan LTE 1800 MHz eksisting berdasarkan pedekatan cakupan dan kapasitas jaringan. Perhitungan dan simulasi menghasilkan peningkatan penetrasi cakupan wilayah hingga 65% ketika menerapkan LTE Advanced 850 MHz. Sedangkan pendekatan kapasitas, pada parameter active user, jumlah connected user pada frekuensi 850 MHz mencapai 98% jauh dibandingkan frekuensi 1800 Mhz yang mencapai 91%, serta kualitas sinyal RSRP meningkat 37%-46%Kata kunci: LTE Advanced, 850MHz, Effective Throughput, Active User, Penetrasi, Broadband ABSTRACTLTE mobile broadband services is growing rapidly in Indonesia, however the deployment does not spread evenly, especially in remote area. Moreover, resource of frequency spectrum is limited because of the growth of broadband traffic. Thus, frequency spectrum 850 MHz can be implemented for LTE Advanced to increase mobile broadband penetration. So, to measure LTE penetration level, LTE Advanced 850 MHz design is compared to the existing LTE 1800 MHz by coverage and capacity approachment. According to calculation and simulation, coverage penetration increase up to 65% as LTE Advanecd 850 MHz implemetation. While, the connected user of LTE 850 MHz reach 98% when compared to LTE Advanced 1800 MHz that only reach up to 91% and also signal quality increase up to 37%-46%.Keywords: LTE Advanced, 850MHz, Effective throughput, Active user, Penetration, Broadband

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Astely, D., E. Dahlman, A. Furuskar, Y. Jading, M. Lindstrom, and S. Parkvall. "LTE: the evolution of mobile broadband." IEEE Communications Magazine 47, no. 4 (April 2009): 44–51. http://dx.doi.org/10.1109/mcom.2009.4907406.

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Chaudhry, Aizaz U., and Roshdy H. M. Hafez. "LMR and LTE for Public Safety in 700 MHz Spectrum." Wireless Communications and Mobile Computing 2019 (June 10, 2019): 1–17. http://dx.doi.org/10.1155/2019/7810546.

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This paper presents a concise overview of current public safety communication networks known as LMR (Land Mobile Radio) and emerging LTE- (Long-Term Evolution-) based broadband public safety networks to be deployed in the 700 MHz band. A broadband nationwide network for public safety based on LTE is inevitable where shared or dedicated types of LTE-based public safety networks are possible. Current LTE services do not meet mission-critical requirements and several enhancements have been defined by 3GPP to address this in Releases 12 and 13. First responders are familiar with LMR and consider it to be a reliable technology with massive deployment everywhere. Therefore, it is expected that LMR will continue to exist alongside any new LTE-based broadband public safety network. Recent LTE releases (particularly Release 15) addressed the LMR-LTE interoperability issue and described comprehensive interworking facilities. New and upcoming features and services of LTE in Releases 14 and 15, such as mission-critical data, mission-critical video, and aerial user equipments, are also directly applicable to public safety. The paper endeavours to provide a quick yet meaningful review of all these issues. It also offers a look ahead at the new and rapidly advancing virtualization technologies, such as software-defined radio access network, and radio access network slicing, as enablers for future public safety networks.

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Parikh, Jolly, and Anuradha Basu. "LTE Advanced The 4G Mobile Broadband Technology." International Journal of Computer Applications 13, no. 5 (January 12, 2011): 17–21. http://dx.doi.org/10.5120/1776-2449.

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Kumar, Amit, Jyotsna Sengupta, and Yun-fei Liu. "3GPP LTE: The Future of Mobile Broadband." Wireless Personal Communications 62, no. 3 (July 20, 2010): 671–86. http://dx.doi.org/10.1007/s11277-010-0088-3.

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ARYANTA, DWI. "Analisis Penggunaan Frequency Band 400 MHz dan 700 MHz untuk Layanan Broadband PPDR di Indonesia." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 6, no. 1 (April 23, 2018): 35. http://dx.doi.org/10.26760/elkomika.v6i1.35.

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ABSTRAKLayanan komunikasi Public Protection and Disaster Relief (PPDR) di Indonesia saat ini bekerja pada frequency band 400 MHz melalui teknologi narrowband. Semakin beragamnya layanan dan kebutuhan informasi membutuhkan pengembangan ke arah penerapan teknologi broadband. Adanya wacana Analog Switch Off (ASO), memungkinan frequency band 700 MHz dapat dimanfaatkan layanan komunikasi PPDR dengan penerapan teknologi LTE. Melalui kajian penggunaan frequency band 400 MHz dan 700 MHz, layanan broadband PPDR kejadian PP1 membutuhkan lebar band sebesar 10 MHz untuk baik pada arah uplink maupun downlink. Jumlah sel yang diperlukan pada penggunaan frequency band 400 MHz adalah 6482 sel pada tahun 2017 dan meningkat menjadi 6744 sel pada tahun 2021, sedangkan frequency band 700 MHz dari 12901 sel menjadi 13510 sel.Kata kunci: PPDR, broadband, ASO, PP1, LTE ABSTRACTThe Public Protection and Disaster Relief (PPDR) communication service in Indonesia is currently working on a 400 MHz frequency band through narrowband technology. Increasingly diverse services and information needs require development towards the application of broadband technology. The discourse of Analog Switch Off (ASO), allows the 700 MHz frequency band can be utilized PPDR communication services with the application of LTE technology. Through the study of the use of 400 MHz and 700 MHz frequency bands, PPDR broadband service incident PP1 requires bandwidth of 10 MHz for both uplink and downlink. The number of cells required on the use of the 400 MHz frequency band is 6482 cells by 2017 and increases to 6744 cells by 2021, while the 700 MHz frequency band from 12901 cells becomes 13510 cells.Keywords: PPDR, broadband, ASO, PP1, LTE

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Espinoza, David, and David Reed. "Wireless technologies and policies for connecting rural areas in emerging countries: a case study in rural Peru." Digital Policy, Regulation and Governance 20, no. 5 (August 13, 2018): 479–511. http://dx.doi.org/10.1108/dprg-03-2018-0009.

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Purpose This paper aims to compare the costs of deploying different wireless terrestrial broadband technologies in the Andes and Amazon Regions of Peru. These areas are representatives of different and challenging geographic regions throughout the globe that currently are severely underserved or unserved for vital broadband services necessary to bridge the “Digital Divide”. Design/methodology/approach The broadband technologies studied include Wi-Fi, Worldwide Interoperability for Microwave Access (WiMAX), long term evolution (LTE), TVWS and new stratospheric platforms (super-pressure balloons). This study conducts a technical analysis (design and simulation) of wireless broadband networks, and a bottom-up engineering cost analysis to estimate and compare the deployment and operating costs of the networks over a 10-year period. The analysis also identifies potential regulatory barriers to deployment associated with spectrum allocation licenses and overbooking requirements intended to improve quality of service. Findings Comparison of the capital and operating expenses of these options over a 10-year period finds that LTE and Wi-Fi can be the lowest cost alternatives, though significantly, stratospheric balloons have the lowest initial costs for the first few years and can factor as a low-cost broadband catalyst early in deployment. Finally, the lowest cost technology broadband roadmap for the 10-year period is presented, which includes using stratospheric balloons (carrying micro-LTE base stations) for the first years and deploying complementary terrestrial LTE networks for the rest of the 10-year period. Originality/value This study presents detailed technical and engineering cost analysis results of wireless access network deployments, including advanced wireless technologies and new unmanned aerial systems, to expand broadband services to rural areas in mountainous (Andes Region) and rainforest (Amazon Region) geographies to reduce the digital divide in emerging countries. Results aim to aid governments, regulators, internet service providers (incumbents and competitive) and content providers to assess current alternatives to expand broadband service in these rural areas.

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BRISO-RODRÍGUEZ, César, Carlos F. LÓPEZ, Jean R.O. FERNÁNDEZ, Sergio PÉREZ, Drasko DRASKOVIC, Jaime CALLE-SÁNCHEZ, Mariano MOLINA-GARCIA, et al. "Broadband Access in Complex Environments: LTE on Railway." IEICE Transactions on Communications E97.B, no. 8 (2014): 1514–27. http://dx.doi.org/10.1587/transcom.e97.b.1514.

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S, Pradeep. "A Novel HWRR-SJF Scheduling Algorithm for Optimal Performance Improvement in LTE System." International Journal of Engineering Education 1, no. 1 (June 15, 2019): 1–8. http://dx.doi.org/10.14710/ijee.1.1.1-8.

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In currently, the revolution in a high-speed broadband network is the requirement and also endless demand for high data rate and mobility. To achieve above requirement, the 3rd Generation Partnership Project (3GPP) has been established the Long Time Evolution (LTE). LTE has established an improved LTE radio interface named LTE-Advanced (LTE-A) and it is a promising technology for providing broadband, mobile Internet access. But, better Quality of Service (QoS) to provide for customers is the main issue in LTE-A. To reduce the above issue, the packets should be utilized by using one of the most significant function of packet scheduling to upgrading system performance via determines the throughput performance. In existing scheme, the user with poor Channel Quality Indicator (CQI) has smaller throughput issue is not focused. In this paper, a Hybrid Weighted Round Robin with Shortest Job First (HWRR-SJF) Scheduling technique is proposed to enhance efficient throughput and fairness in LTE system for stationary and mobile users. In this proposed scheduling, to schedule users according to a different criterion like fairness and CQI. HWRR-SJF Scheduling has been proposed for scheduling of the users and it produces increased throughput for various SNR values simulated alongside Pedestrian and Vehicular moving models. The proposed method also uses a 4G-LTE filter or Digital Dividend (DD) in order to align the incoming signal. The digital dividend is used to remove white spaces, which refer to frequencies assigned to a broadcasting service but not used locally. The proposed model is very effective for users in terms of the performance metrics like packet loss, throughput, packet delay, spectral efficiency, fairness and it has been verified through MATLAB simulations.

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de C. Neto, José M., Sildolfo F. G. Neto, Pedro M. de Santana, and Vicente A. de Sousa. "Multi-Cell LTE-U/Wi-Fi Coexistence Evaluation Using a Reinforcement Learning Framework." Sensors 20, no. 7 (March 27, 2020): 1855. http://dx.doi.org/10.3390/s20071855.

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Cellular broadband Internet of Things (IoT) applications are expected to keep growing year-by-year, generating demands from high throughput services. Since some of these applications are deployed over licensed mobile networks, as long term evolution (LTE), one already common problem is faced: the scarcity of licensed spectrum to cope with the increasing demand for data rate. The LTE-Unlicensed (LTE-U) forum, aiming to tackle this problem, proposed LTE-U to operate in the 5 GHz unlicensed spectrum. However, Wi-Fi is already the consolidated technology operating in this portion of the spectrum, besides the fact that new technologies for unlicensed band need mechanisms to promote fair coexistence with the legacy ones. In this work, we extend the literature by analyzing a multi-cell LTE-U/Wi-Fi coexistence scenario, with a high interference profile and data rates targeting a cellular broadband IoT deployment. Then, we propose a centralized, coordinated reinforcement learning framework to improve LTE-U/Wi-Fi aggregate data rates. The added value of the proposed solution is assessed by a ns-3 simulator, showing improvements not only in the overall system data rate but also in average user data rate, even with the high interference of a multi-cell environment.

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Більше джерел

Дисертації з теми "Broadband and LTE"

SANTOS, DIEGO DOS. "COVERAGE AND CAPACITY PLANNING OF LTE BROADBAND ACCESS NETWORKS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=17607@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
FUNDAÇÃO DE APOIO À PESQUISA DO ESTADO DO RIO DE JANEIRO
Atualmente, as redes celulares estão sendo utilizadas como uma saída para prover serviços de banda larga em locais que ainda não são atendidos pelas redes fixas, principalmente em países subdesenvolvidos como o Brasil. As tecnologias empregadas atualmente no Brasil, o GSM (Global System for Mobile) e o UMTS (Universal Mobile Telecommunications System), não são tecnologias desenvolvidas para absorver a grande demanda que vem sendo observada no mercado de banda larga móvel. Devido a essa demanda inesperada, acredita-se que o LTE (Long Term Evolution), a primeira tecnologia desenvolvida com o objetivo de atender não somente as chamadas de voz, mas principalmente as conexões banda larga, apresente condições de suportar com maior eficiência esta crescente necessidade. Para que todas as expectativas relacionadas à capacidade das redes LTE sejam atendidas, é extremamente necessário que um correto dimensionamento dessas redes seja realizado, pois somente desta forma será possível estabelecer o compromisso de se atender os usuários com qualidade.
At the moment, the cellular networks are being used as an option to provide broadband services in places that have not yet been covered by the fixed networks, mainly in underdeveloped countries like Brazil. The employed technologies now in Brazil, GSM (Global System is Mobile) and UMTS (Mobile Universal Telecommunications System), they were not developed to absorb the great demand that has been observed at the broadband mobile market. Due to that unexpected demand, it’s being believed that LTE (Long Term Evolution), the first technology developed with the objective of supporting not only the voice calls, but mainly the broadband connections, is able to hold with larger efficiency this growing needs. For all that expectations about the LTE network’s capacity be achieved, it is extremely necessary that a correct sizing of those networks be accomplished, therefore only this way it will be possible to establish the commitment of supporting the subscribers with quality.

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Chen, Xi. "Analysis of the Impact of TD-LTE on mobile broadband." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-141341.

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The mobile broadband services have developed rapidly over the years, becoming critical revenue components of operator business. To accommodate users' growing interests on mobile broadband services and applications, global operators have tried to reorganize their former voice-centered networks by focusing more on the reinforcement of mobile data network performances and capacities. TD-LTE, as one of the emerging powers for the mobile broadband solutions, has gained global attentions and momentums. Different from previous work about the technical evaluations or market predictions, the thesis aims to provide a techno-economic analysis to TD-LTE system, linking its technological characters to the market opportunities and implementation strategies. In order to help TD-LTE operators identify the profit potentials of the system, the services and applications that TD-LTE could enable are discussed together with the analysis of the terminal developments, which are critical to end users' acceptance of TD-LTE. The network deployment strategies are examined and the methods of implementing a decent TD-LTE mobile data network are analyzed with cost efficiency considerations. The analysis find out that the availability of spectrum resource are of most importance for the adoption of TD-LTE technology and the sustainable growth of TD-LTE business relies on the differentiation strategy of services and applications. The feasibility study shows that TD-LTE could enable varied network deployment scenarios, including integrated network solution with legacy networks, and convergent network solution with LTE FDD. The cost analysis find out site infrastructure sharing is beneficial for cost reduction during a national level rollout, especially when the traffic volume increases. Reusing the coverage and capacity of legacy network is mostly effective in the initial phase, and TD-LTE deployment pace should accord with the data prediction on the live network. For compact and indoor scenarios, TD-LTE femto could be a cost effective alternative for mobile broadband access, however the bottleneck of the solution is the limitation on the number of concurrent connections for each femtocell.

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Alotaibi, Sultan. "3GPP Long Term Evolution LTE Scheduling." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc490046/.

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Future generation cellular networks are expected to deliver an omnipresent broadband access network for an endlessly increasing number of subscribers. Long term Evolution (LTE) represents a significant milestone towards wireless networks known as 4G cellular networks. A key feature of LTE is the implementation of enhanced Radio Resource Management (RRM) mechanism to improve the system performance. The structure of LTE networks was simplified by diminishing the number of the nodes of the core network. Also, the design of the radio protocol architecture is quite unique. In order to achieve high data rate in LTE, 3rd Generation Partnership Project (3GPP) has selected Orthogonal Frequency Division Multiplexing (OFDM) as an appropriate scheme in terms of downlinks. However, the proper scheme for an uplink is the Single-Carrier Frequency Domain Multiple Access due to the peak-to-average-power-ratio (PAPR) constraint. LTE packet scheduling plays a primary role as part of RRM to improve the system’s data rate as well as supporting various QoS requirements of mobile services. The major function of the LTE packet scheduler is to assign Physical Resource Blocks (PRBs) to mobile User Equipment (UE). In our work, we formed a proposed packet scheduler algorithm. The proposed scheduler algorithm acts based on the number of UEs attached to the eNodeB. To evaluate the proposed scheduler algorithm, we assumed two different scenarios based on a number of UEs. When the number of UE is lower than the number of PRBs, the UEs with highest Channel Quality Indicator (CQI) will be assigned PRBs. Otherwise, the scheduler will assign PRBs based on a given proportional fairness metric. The eNodeB’s throughput is increased when the proposed algorithm was implemented.

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Демченко, І. В., та А. В. Булашенко. "Аналіз побудови мережі LTE". Thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/67508.

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Останнім часом бурхливими темпами розвиваються мобільні технології зв’язку. Доказом є те, що в Україні 6 березня 2018 року за сприяння президента України Петра Олексійовича Порошенка представники трьох провідних українських мобільних операторів Київстар, Vodafone-Україна та Lifecell одержали три ліцензії за право на зв'язок 4 покоління.

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Fältström, Johan, and Fredrik Gidén. "LiUMIMO : A MIMO Testbed for Broadband Software Defined Radio." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18331.

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In order to keep up with the increasing demand on speed and reliability in modern wireless systems, new standards have to be introduced. By using Multiple Input Multiple Output technology (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) technologies the performance can be increased dramatically. Forthcoming standards such as WLAN 802.11n, WiMax and 3GPP LTE are all taking advantage of MIMO technology. To perform realistic tests with these standards it is often not enough to run software simulations in for example Matlab. Instead, as many real world parameters as possible need to be included. This can be done using a testbed, like the LiUMIMO, that actually transmits and receives data through the air.

The LiUMIMO is designed as a Software Defined Radio (SDR), only the RF front end and the data log are implemented in hardware, while all signal processing will be performed in Matlab.

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Almantheri, H. M. "Provision of broadband Internet in Oman by joining LTE-A with TV white space (TVWS)." Thesis, University of Salford, 2016. http://usir.salford.ac.uk/41559/.

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In the last 45 years, the Sultanate of Oman has developed overdramatically and steadily in all aspects of life. This progress has included health, education and transportation sectors along with social and economic areas. The progress has also counted in the telecommunication services with many new land and wireless networks such as fibre optic networks, 3G, 4G/LTE and WiMAX. These telecommunication services have covered major cities and towns in the country, but due to the vast and inhospitable terrains of Oman with its geographical, demographical and social factors, it has been very problematic to cover major rural and urban areas of the country with satisfactory fibre and mobile services for home and mobile users by using one of the current traditional fixed and mobile technologies. Therefore, in this research, we have investigated the feasibility of using Television White Space (TVWS) technology in providing the required internet service by combining it with the ever-evolving Long Term Evolution- Advanced (LTE-A) technology as a solution to the problem mentioned above. For this purpose, and to specify the occupancy of the TVWS spectrum so to suggest a solution based on the LTE-A operating on the TVWS, we have conducted a radio spectrum occupancy measurement survey campaign for 40 MHz to 2800 MHz range. The survey was conducted in five major areas of the country. The campaign has identified that the TV spectrum (470 MHz to 890 MHZ) is idle most of the time. Further, we have implemented our proposed solution through the simulation of the Long-Term Evolution-Advanced (LTE-A) Ver. 12 technology operating in the TV spectrum (470-710 MHz). This type of solution is the first to use Ver. 12 on TVWS even on a simulation level. The simulation approach has been chosen over a real implementation because the technology is still in its early development stage, therefore, the hardware required for the implementation is still out of reach. Our simulation involved planning and implementation of two networks with eight scenarios. One network is our proposed network and the other is the classical LTE network operating on the 1800 MHz spectrum. The simulation results and analysis have demonstrated that our solution could provide reliable mobile and fixed service to a large number of users in a very large area with high data throughput and good Quality of Service (QoS) by using very little resources such as sites, Base Stations (BSs) and other resources. The simulation has demonstrated that one TVWS Base Station (TVWSBS) could cover up to 110 Km radius area and provide up to 4 Gigabits Per Second (4Gbps) DownLink (DL) and up to 2 Gbps UpLink (UL) data throughput. Therefore, our solution overweighs the traditional LTE/4G network in all aspects. This type of technology could meet the needs of broadband internet service for rural and congested areas of Oman using most of the existing old TV towers infrastructure and with minimum investment. Therefore, in our research, we are proposing an alternative method of providing broadband internet service that differs from the available traditional methods found in the literature considering the unique particularities of the demographic, geographic, social and environmental factors of Oman. Additionally, we have outlined TVWS regulations that could be utilised by concerned spectrum authorities in Oman and similar countries. Finally, we have developed an algorithm that could manage TVWS Database (TVWSDB) and could be incorporated in the Service Providers’ (SP) network management systems.

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CALABUIG, GASPAR JORGE. "Broadcasting in 4G mobile broadband networks and its evolution towards 5G." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/48561.

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One of the challenges of the mobile industry is to cope with the growth of mobile traffic demand expected for the next years, primarily driven by the increasing usage of mobile video services. Indeed, the existence of increasingly powerful terminals is encouraging the consumption of high-quality video content. Usually, video services are identified with linear Television (TV) and scheduled broadcast (point-to-multipoint (p-t-m)) distribution. However, the consumption of video content over mobile networks is different from traditional fixed TV because contents are mainly consumed on-demand with unicast point-to-point (p-t-p) connections. Then, the convergence of linear TV and on-demand content delivery represents a challenge that requires a combined broadcast/unicast transmission model. This dissertation addresses the use of broadcasting technologies for the provision of mobile multimedia services in Fourth Generation (4G) mobile broadband networks and beyond. Specifically, the dissertation focuses on the broadcast technology included in 4G Long Term Evolution (LTE) and LTE Advanced (LTE-A) networks, known as Enhanced Multicast Broadcast Multimedia Services (eMBMS). It analyses the benefits of the eMBMS physical layer aspects regarding Multimedia Broadcast Multicast Services over a Single Frequency Network (MBSFN) deployments and identifies the current limitations of eMBMS at physical layer by comparing with the broadcast technology of the other 4G mobile system, the Institute of Electrical and Electronics Engineers (IEEE) 802.16m standard. Those limitations are the use of a dedicated carrier and Multiple-Input Multiple-Output (MIMO) techniques for broadcast transmissions. Our investigations employ a complete simulation platform including link-level and system-level simulations to evaluate the performance of broadcast transmissions in these real technologies. The research on eMBMS services is aimed at finding the optimum delivery of streaming and file download services focusing on the Radio Resource Management (RRM) problem and trade-off between Physical layer – Forward Error Correction (PHY-FEC) and Application Layer - Forward Error Correction (AL-FEC). Concerning streaming services, results show that the use of AL-FEC increases the coverage level and, then, the maximum service data rate. The gain due to AL-FEC is greater in scenarios with high mobility users, although, this gain is limited if low zapping times are desired. Regarding file delivery services, this dissertation analyses the duration of the transmission required to guarantee the correct file reception and the reduction in the mean throughput of unicast users with different delivery modes. They are the unicast delivery, the eMBMS delivery and a hybrid approach, which combines a first eMBMS delivery with a postdelivery error repair phase with unicast transmissions. Our results show that the hybrid delivery is the most efficient configuration in terms of file download time, although it further reduces unicast performance.
Calabuig Gaspar, J. (2015). Broadcasting in 4G mobile broadband networks and its evolution towards 5G [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/48561
TESIS

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Huang, Yulin. "VLSI Implementation of Key Components in A Mobile Broadband Receiver." Thesis, Linköping University, Computer Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18798.

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Digital front-end and Turbo decoder are the two key components in the digital wireless communication system. This thesis will discuss the implementation issues of both digital front-end and Turbo decoder.The structure of digital front-end for multi-standard radio supporting wireless standards such as IEEE802.11n, WiMAX, 3GPP LTE is investigated in the thesis. A top-to-down design methods. 802.11n digital down-converter is designed from Matlab model to VHDL implementation. Both simulation and FPGA prototyping are carried out.As another significant part of the thesis, a parallel Turbo decoder is designed and implemented for 3GPPLTE. The block size supported ranges from 40 to 6144 and the maximum number of iteration is eight.The Turbo decoder will use eight parallel SISO units to reach a throughput up to 150Mits.

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IQBAL, MUSTAZAR. "Advanced High Efficiency and Broadband Power Amplifiers Based on GaN HEMT for Wireless Applications." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2672421.

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In advanced wireless communication systems, a rapid increase in the mobile data traffic and broad information bandwidth requirement can lead to the use of complex spectrally efficient modulation schemes such as orthogonal frequency-division multiplexing (OFDM). Generally, complex non-constant envelope modulated signals have very high peak-to-average ratios (PAPR). Doherty Power Amplifier (DPA) is the most commonly used power amplifier (PA) architecture for meeting high efficiency requirement in advanced communication systems, in the presence of high PAPR signals. However, limited bandwidth of the conventional DPA is often identified as a bottleneck for widespread deployment in base-station application for multi-standard communication signals. The research in this thesis focuses on the development of new designs to overcome the bandwidth limitations of a conventional PA. In particular, the bandwidth limitation factors of a conventional DPA architecture are studied. Moreover, a novel design technique is proposed for DPA’s bandwidth extension. In the first PA design, limited bandwidth and linearity problems are addressed simultaneously. For this purpose, a new Class-AB PA with extended bandwidth and improved linearity is presented for LTE 5 W pico-cell base-station over a frequency range of 1.9–2.5 GHz. A two-tone load/source-pull and bias point optimization techniques are used to extract the sweet spots for optimum efficiency and linearity from the 6 W Cree GaN HEMT device for the whole frequency band. The realized prototype presented saturated PAE higher than 60%, a power gain of 13 dB and an average output power of 36.5 dBm over the desired bandwidth. The proposed PA is also characterized by QAM-256 and LTE input communication signals for linearity characterization. Measured ACPRs are lower than -40 dBc for an input power of 17 dBm. The documented results indicate that the proposed Class-AB architecture is suitable for pico-cell base-station application. In the second PA design, an inherent bandwidth limitation of Class-F power amplifier forced by the improper load harmonics terminations at multiple harmonics is investigated and analyzed. It is demonstrated that the impedance tuning of the second and third harmonics at the drain terminal of a transistor is crucial to achieve a broadband performance. The effect of harmonics terminations on power amplifier’s bandwidth up to fourth harmonics is investigated. The implemented broadband Class-F PA achieved maximum saturated drain efficiency 60-77%, and 10 W output power throughout (1.1-2.1 GHz) band. The simulated and measured results verify that the presented Class-F PA is suitable for a high-efficiency system application in wireless communications over a wide range of frequencies. In the third PA design, a single- and dual-input DPA for LTE application in the 3.5 GHz frequency band are presented and compared. The main goal of this study is to improve the performance of gallium–nitride (GaN) Doherty transmitters over a wide bandwidth in the 3.5 GHz frequency band. For this purpose, the linearity-efficiency trade-off for the two proposed architectures is discussed in detail. Simulated results demonstrate that the single- and dual-input DPA exhibited a peak drain efficiency (DE) of 72.4% and 77%, respectively. Both the circuits showed saturated output power more than 42.9 dBm throughout the designed band. Saturated efficiency, gain and bandwidth of dual-input DPA are higher than that of the single-input DPA. On the other side, dual-input DPA linearity is worse as compared to the single-input DPA. In the last PA design, a novel design methodology for ultra-wide band DPA is presented. The bandwidth limitation factors of the conventional Doherty amplifier are discussed on the ground of broadband matching with impedance variation. To extend the DPA bandwidth, three different methods are used such as post-matching, low impedance transformation ratio and the optimization of offset line for wide bandwidth in the proposed design. The proposed Doherty power amplifier was designed and realized based on two 10 W GaN HEMT devices from Cree Inc. The measured results exhibited 42-57% of efficiency at the 6-dB back-off and saturated output power ranges from 41.5 to 43.1 dBm in the frequency range of 1.15 to 2.35 GHz (68.5% fractional bandwidth). Moreover, less than -25 dBc ACPRs are measured at 42 dBm peak output power throughout the designed band. In a nutshell, all power amplifiers presented in this thesis are suitable for wideband operation and their performances are satisfying the required operational standard. Therefore, this thesis has a significant contribution in the domain of high efficiency and broadband power amplifiers.

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Yrjölä, S. (Seppo). "Analysis of technology and business antecedents for spectrum sharing in mobile broadband networks." Doctoral thesis, Oulun yliopisto, 2017. http://urn.fi/urn:isbn:9789526214993.

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Abstract Sharing is emerging as one of the megatrends influencing future business opportunities, and wireless communications is no exception to this development. Future mobile broadband networks will operate on different types of spectrum bands including shared spectrum, which calls for changes in the operation and management of the networks. The creation and capture of value by the different players in the mobile broadband ecosystem is expected to change due to regulation, technology, and business landscape related drivers that concern not only spectrum sharing, but also sharing of other resources such as infrastructure, technologies, or data. This thesis examines the key business and technology enablers needed to exploit spectrum sharing in mobile broadband networks, and presents the business model characteristics and strategic choices that spectrum sharing concepts support. Action research and integral scenarios methodologies were applied for strategic and business analysis utilizing the capacity and expertise of the policy, business and technology research communities. The thesis introduces a new approach to analyze the scalability of the spectrum sharing concepts and their business model elements utilizing sharing economy antecedent factors. The results indicate that all analyzed sharing concepts meet basic requirements to scale. The Licensed Shared Access (LSA) leverages existing assets and capabilities of the mobile network operator domain, the Citizens Broadband Radio Service (CBRS) extends the business model dynamics from connectivity to content, context and commerce, and the hybrid usage of Ultra High Frequency (UHF) band by Digital Terrestrial TV (DTT) and downlink Long Term Evolution (LTE) (HUHF) enables new collaborative opportunities between converging communication, Internet and media domains. The thesis validates the feasibility of spectrum sharing between mobile broadband networks and other types of incumbent spectrum users utilizing Finnish cognitive radio field trial environment (CORE), and expands the notion of spectrum sharing beyond the mobile broadband domain to be applied to other wireless systems including the media and broadcasting. The presented results can be used in developing the future mobile broadband systems enhanced with innovative spectrum sharing enabled business models to cope with the growing demand for capacity and new services by humans and machines
Tiivistelmä Jakamistalous on yksi suurista tulevaisuuden liiketoimintamahdollisuuksiin vaikuttavista trendeistä, eikä langaton tietoliikenne ole tässä poikkeus. Tulevaisuuden laajakaistaiset matkapuhelinverkot tulevat hyödyntämään erityyppisiä radiotaajuuksia, kuten jaettuja taajuuskaistoja, mikä vaatii muutoksia verkkojen toimintoihin ja hallintaan. Eri toimijoiden arvonluonti- ja ansaintamahdollisuuksien odotetaan muuttuvan näissä liikkuvan laajakaistan ekosysteemeissä regulaation, teknologian ja liiketoimintaympäristön kehittyessä, ei vain taajuuksien jakamisessa, vaan myös kun kyseessä on muiden resurssien kuten infrastruktuurin, teknologioiden tai tiedon jakaminen. Väitöskirja tutkii teknologia- ja liiketoimintaedellytyksiä taajuusjakomenetelmille matkapuhelinverkoissa, sekä esittelee ja analysoi menetelmien mahdollistamia liiketoimintamalleja ja strategisia valintoja. Strategia- ja liiketoiminta-analyyseissä käytettiin toimintatutkimus- ja skenaariomenetelmiä poikkitieteellisissä tutkimusprojekteissa yhteistyössä reguloinnin, liiketoiminnan ja tekniikan tutkimusyhteisöjen kanssa. Tutkimus esittelee uuden lähestymistavan taajuusjakotekniikoiden liiketoimintamallien skaalautuvuuden analysointiin jakamistalouden määritelmiä hyödyntäen. Tulokset osoittavat, että kaikki tutkitut tekniikat täyttävät perusedellytykset skaalautuvuudelle; Licensed Shared Access (LSA) hyödyntäen matkapuhelinoperaattorin olemassa olevia resursseja ja kyvykkyyksiä, Citizens Broadband Radio Service (CBRS) laajentaen liiketoimintamalleja tietoliikenteestä sisältöön, kontekstiin ja kaupankäyntialustoihin, sekä digitaalitelevision ja langattoman LTE-tekniikan hybridikäyttö UHF-taajuuskaistalla (HUHF) mahdollistaen uusia liiketoimintamahdollisuuksia lähentyvien tietoliikenne-, Internet- ja mediaekosysteemien välillä. Väitöskirja tulokset vahvistivat taajuuden jakamisen soveltuvuuden liikkuvan laajakaistaverkon ja saman taajuusalueen eri teollisuudenalan haltijan välillä suomalaisessa CORE kenttätestausympäristössä, ja laajensivat taajuusjakotekniikan sovellettavuutta myös muihin langattomiin järjestelmiin sisältö- ja mediajakelussa. Esitettyjä tuloksia voidaan hyödyntää tulevaisuuden langattomien laajakaistaverkkojen kehitystyössä vastaamaan ihmisten ja koneiden kasvaviin tietoliikennepalveluiden ja -kapasiteetin tarpeisiin hyödyntäen tehokkaita taajuusjakotekniikoita ja niiden mahdollistamia innovatiivisia liiketoimintamalleja

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Книги з теми "Broadband and LTE"

1967-, Parkvall Stefan, Sköld Johan, and ScienceDirect (Online service), eds. 4G: LTE/LTE-Advanced for Mobile Broadband. San Diego: Academic Press [Imprint], 2011.

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Per, Beming, Parkvall Stefan 1967-, and Sköld Johan, eds. 3G Evolution: HSPA and LTE for Mobile Broadband. 2nd ed. San Diego: Academic Press [Imprint], 2008.

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Erik, Dahlman, ed. 3G evolution: HSPA and LTE for mobile broadband. Oxford: Elsevier Academic Press, 2007.

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Khan, Farooq. LTE for 4G mobile broadband: Air interface technologies and performance. Cambridge, UK: Cambridge University Press, 2009.

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LTE for 4G mobile broadband: Air interface technologies and performance. Cambridge, UK: Cambridge University Press, 2009.

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Yuemeng, Li, ed. LTE-Advanced kuan dai yi dong tong xin xi tong: LTE-Advanced Broadband Mobile Communications System. Beijing: Ren min you dian chu ban she, 2012.

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From GSM to LTE: An introduction to mobile networks and mobile broadband. Chichester, West Sussex, U.K: Wiley, 2011.

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Ferrus, Ramon. Mobile broadband communications for public safety: The road ahead through LTE technology. Hoboken: John Wiley and Sons, Inc., 2015.

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Kaorhonen, Jouni. Deploying IPv6 in 3GPP networks: Evolving mobile broadband from 2G to LTE and beyond. Chichester, West Sussex: John Wiley & Sons, 2013.

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4G: LTE/LTE-Advanced for Mobile Broadband. Elsevier, 2014. http://dx.doi.org/10.1016/c2013-0-06829-6.

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Частини книг з теми "Broadband and LTE"

Ali-Yahiya, Tara. "Introduction to Mobile Broadband Wireless." In Understanding LTE and its Performance, 3–15. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6457-1_1.

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Tsolkas, D., D. Xenakis, N. Passas, and L. Merakos. "Next Generation Cognitive Cellular Networks, LTE, WiMAX and Wireless Broadband Access." In Lecture Notes in Electrical Engineering, 307–30. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-1827-2_12.

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Wu, Haibin, Xiang Zhang, Lei Xie, Julian Andrade, Shupeng Xu, and Xue Yang. "LTE-Based Wireless Broadband Train to Ground Network Performance in Metro Deployments." In Lecture Notes in Computer Science, 68–78. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-90371-2_8.

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Li, Huan, Yang Liu, Fanbo Meng, Zhibin Yang, Dongdong Wang, and Yang Nan. "A Traffic Feature Analysis Approach for Converged Networks of LTE and Broadband Carrier Wireless Communications." In Simulation Tools and Techniques, 183–93. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72792-5_17.

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Milone, E. F., D. A. Leahy, and D. J. I. Fry. "Broadband Multicolour Photometry of CH Cygni." In Late Stages of Stellar Evolution, 283–84. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3813-7_45.

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de Lanerolle, Indra, Alison Gillwald, Christoph Stork, and Enrico Calandro. "Let Them Eat Movies: (How) Will Next-Generation Broadband Diffuse Through Africa?" In Broadband as a Video Platform, 15–40. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-03617-5_3.

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Ivanova, Elena, Teodor Iliev, Grigor Mihaylov, Ventsislav Keseev, and Ivaylo Stoyanov. "Significant Simulation Parameters for RESTART/LRE Method in Teletraffic Systems of Ultra Broadband Convergence Networks." In Intelligent Systems in Cybernetics and Automation Control Theory, 69–77. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00184-1_7.

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"Fourth Generation Systems: LTE and LTE-Advanced." In Broadband Access, 353–402. Chichester, United Kingdom: John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118878774.ch17.

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Dahlman, Erik, Stefan Parkvall, and Johan Sköld. "Background of LTE." In 4G: LTE/LTE-Advanced for Mobile Broadband, 1–15. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-12-419985-9.00001-5.

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Dahlman, Erik, Stefan Parkvall, and Johan Sköld. "LTE Radio Access." In 4G: LTE/LTE-Advanced for Mobile Broadband, 103–19. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-12-419985-9.00007-6.

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Тези доповідей конференцій з теми "Broadband and LTE"

Sawahashi, Mamoru, Yoshihisa Kishiyama, Hidekazu Taoka, Motohiro Tanno, and Takehiro Nakamura. "Broadband radio access: LTE and LTE-advanced." In 2009 International Symposium on Intelligent Signal Processing and Communications Systems (ISPACS 2009). IEEE, 2009. http://dx.doi.org/10.1109/ispacs.2009.5383862.

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Kiiski, Matti. "LTE-Advanced: The mainstream in mobile broadband evolution." In 2010 European Wireless Conference (EW). IEEE, 2010. http://dx.doi.org/10.1109/ew.2010.5483512.

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El-gendy, M. S. "Multi-Broadband Microstrip Antenna for LTE Smartphone Applications." In 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting. IEEE, 2019. http://dx.doi.org/10.1109/apusncursinrsm.2019.8889225.

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Serhan, A., D. Parat, P. Reynier, R. Berro, R. Mourot, C. De Ranter, P. Indirayanti, M. Borremans, E. Mercier, and A. Giry. "A Broadband High-Efficiency SOI-CMOS PA Module for LTE/LTE-A Handset Applications." In 2019 IEEE Radio Frequency Integrated Circuits Symposium (RFIC). IEEE, 2019. http://dx.doi.org/10.1109/rfic.2019.8701727.

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Araniti, G., M. Condoluci, A. Molinaro, A. Iera, and J. Cosmas. "Low complexity subgroup formation in LTE systems." In 2013 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB). IEEE, 2013. http://dx.doi.org/10.1109/bmsb.2013.6621786.

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Khwandah, Sinan A., and John P. Cosmas. "Interference management in LTE co-channel femtocells." In 2014 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB). IEEE, 2014. http://dx.doi.org/10.1109/bmsb.2014.6873516.

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Souto, Nuno, Americo Correia, Rui Dinis, Joao Carlos Silva, and Luis Abreu. "Multiresolution MBMS transmissions for MIMO UTRA LTE systems." In 2008 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting. IEEE, 2008. http://dx.doi.org/10.1109/isbmsb.2008.4536642.

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Zaarour, Farah, and Mohamad Aoude. "The SINR based handover for LTE with uplink consideration." In 2012 Symposium on Broadband Networks and Fast Internet (RELABIRA). IEEE, 2012. http://dx.doi.org/10.1109/relabira.2012.6235101.

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Idayachandran G and Nakkeeran R. "Broadband asymmetric folded dipole antenna for LTE base station." In 2015 IEEE 9th International Conference on Intelligent Systems and Control (ISCO). IEEE, 2015. http://dx.doi.org/10.1109/isco.2015.7282228.

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Tchoketch-Kebir, Lamia, and Boutheina Tlili. "Dual frequency broadband planar monopole antenna for LTE applications." In 2013 Loughborough Antennas & Propagation Conference (LAPC). IEEE, 2013. http://dx.doi.org/10.1109/lapc.2013.6711904.

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Звіти організацій з теми "Broadband and LTE"

Durand, A., R. Droms, J. Woodyatt, and Y. Lee. Dual-Stack Lite Broadband Deployments Following IPv4 Exhaustion. RFC Editor, August 2011. http://dx.doi.org/10.17487/rfc6333.

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Farahbod, A. M., and J. F. Cassidy. An overview of seismic attenuation in the Northern Appalachians Seismic Zone, New Brunswick and Nova Scotia. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329702.

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In this study we investigated coda-wave attenuation (QC) from the northern Appalachian region of eastern Canada in the two provinces of New Brunswick and Nova Scotia. We used earthquake recordings from 8 broadband and 2 short period seismograph stations of the Canadian National Seismograph Network (CNSN) across the region. Our dataset is comprised of 476 earthquakes recorded between 1983 and 2021 with magnitudes ranging from 1.5 to 4.1, depths from 0 to 20 km (with the vast majority being &lt;10 km) and epicentral distances of 5 to 100 km. This gives a total of 261 high signalto- noise (S/N) traces (S/N greater than or equal to 5.0) useful for QC calculation (with a maximum ellipse parameter, a2, of 100) across the region. Coda windows were selected to start at tc = 2tS (two times the travel time of the direct S wave), and were filtered at center frequencies of 2, 4, 8, 12 and 16 Hz. Our study reveals a consistent pattern. We find that in the northern New Brunswick, the lowest Q0 values (e.g., Q0 of 61) are at station KLN which is the closest station to the epicenter of the 1982 Miramichi earthquake (M 5.8). The highest Q0 values that we find (e.g., Q0 of 178) are at station GGN, located in the southern New Brunswick. Smaller Q0 values for stations in the north (closer to the Charlevoix-Kamouraska seismic zone or Miramichi source area) is explained by Jin and Aki's (1988) finding that Q0 is lower in the vicinity of large earthquakes. An average for all the data results in a Q relationship of QC = 99f0.96 for the frequency band of 2 to 16 Hz for the entire region.

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