Gotowe bibliografie tematyczne / Cooperative Relaying Systems

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Gotowa bibliografia na temat „Cooperative Relaying Systems”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Cooperative Relaying Systems"

WANG, Jingjing, Lingwei XU, Xinli DONG, Xinjie WANG, Wei SHI i T. Aaron GULLIVER. "Performance Analysis of DF Relaying Cooperative Systems". IEICE Transactions on Communications E99.B, nr 7 (2016): 1577–83. http://dx.doi.org/10.1587/transcom.2015ebp3455.

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Bastami, Ali H., i Ali Olfat. "Optimal incremental relaying in cooperative diversity systems". IET Communications 7, nr 2 (22.01.2013): 152–68. http://dx.doi.org/10.1049/iet-com.2012.0178.

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Li, Guobing, Shihua Zhu i Hui Hui. "Power allocation in opportunistic cooperative relaying systems". Frontiers of Electrical and Electronic Engineering in China 4, nr 2 (6.03.2009): 149–54. http://dx.doi.org/10.1007/s11460-009-0044-8.

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Alimo, David, Masanori Hamamura i Saifur Rahman Sabuj. "Threshold-Based User-Assisted Cooperative Relaying in Beamspace Massive MIMO NOMA Systems". Sensors 22, nr 19 (30.09.2022): 7445. http://dx.doi.org/10.3390/s22197445.

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The incorporation of user-assisted cooperative relaying into beamspace massive multiple-input multiple-output (mMIMO) non-orthogonal multiple access (NOMA) system can extend the coverage area and improve the spectral and energy efficiency for millimeter wave (mmWave) communications when a dynamic cluster of mobile user terminals (MUTs) is formed within a beam. We propose threshold-based user-assisted cooperative relaying into a beamspace mMIMO NOMA system in a downlink scenario. Specifically, the intermediate MUTs between the next-generation base station (gNB) and the cell-edge MUT become relaying MUTs after the successful decoding of the signal of the cell-edge MUT only when they meet the predetermined signal-to-interference plus noise ratio (SINR) threshold. A zero forcing (ZF) precoder and iterative power allocation are used to minimize both inter- and intra-beam interferences to maximize the system sum rate. We then evaluate the performance of this system in a delay-intolerant cell-edge MUT scenario. Moreover, the outage probability of the cell-edge MUT of the proposed scheme is investigated and an analytic expression is derived. Simulation results confirm that the proposed threshold-based user-assisted cooperative relaying beamspace mMIMO NOMA system outperforms the user-assisted cooperative relaying in beamspace mMIMO NOMA, beamspace MIMO-NOMA, and beamspace MIMO orthogonal multiple access (OMA) systems in terms of spectrum efficiency, energy efficiency, and outage probability.

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Al-Mistarihi, Mamoun F., Rami Mohaisen i Khalid A. Darabkh. "Performance evaluation of decode and forward cooperative diversity systems over nakagami-m fading channels with non-identical interferers". International Journal of Electrical and Computer Engineering (IJECE) 10, nr 5 (1.10.2020): 5316. http://dx.doi.org/10.11591/ijece.v10i5.pp5316-5328.

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The deficiencies of regular cooperative relaying schemes were the main reason behind the development of Incremental Relaying (IR). Fixed relaying is one of the regular cooperative relaying schemes and it relies on using the relay node to help in transmitting the signal of the source towards the destination despite the channel’s condition. However, adaptive relaying methods allocate the channel resources efficiently; thus, such methods have drawn the attention of researchers in recent years. In this study, we analyze a two-hop Decode-and-Forward (DF) IR system’s performance via Nakagami-m fading channels with the existence of the several L distinguishable interferers placed close to the destination which diminishes the overall performance of the system due to the co-channel interference. Tight formulas for the Bit Error Rate (BER) and the Outage Probability (OP) are drawn. The assumptions are consolidated by numerical calculations.

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Wang, Zih-Sin, Liang-Hung Lin, Jyh-Horng Wen, Yen-Ju Lin i Chien-Erh Weng. "Performance Analysis of AF Cooperative Relaying Networks with SWIPT". Electronics 11, nr 4 (15.02.2022): 589. http://dx.doi.org/10.3390/electronics11040589.

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Cooperative communication networks have received more attention due to its ability to improve the signal quality of terminal devices by spatial diversity. Under recent advance in internet of things, In order to extend the service life of terminal devices powered by battery, simultaneous wireless information and power transfer (SWIPT) technique has been emphasize. The terminal devices can harvest energy and decode information from the same radio frequency (RF) signal using by SWIPT technique. In this paper, we combine both techniques to study the performance of both conventional cooperative relaying networks without SWIPT and cooperative relaying networks with SWIPT under an amplify-and-forward (AF) relaying network. To the best of our knowledge, no one simultaneously studies and compares the performance of both systems. Therefore, the outage probabilities of both systems are carried out, and numerical results are compared in this paper. The main results include: (1) Compared with conventional cooperative communication, the cooperative communication with SWIPT has better outage probability only when the distance between relay node and source node is less than one. It implies that, to outperform the conventional cooperative communication, the relay node should harvest enough energy for signal transmission. (2) With the diversity of direct path and relay path, the outage probability of cooperative communication with EH under an AF relaying network has been significantly reduced.

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Ho Van, Khuong, i Kong Hyung Yun. "Energy Savings in OFDM Systems through Cooperative Relaying". ETRI Journal 29, nr 1 (9.02.2007): 27–35. http://dx.doi.org/10.4218/etrij.07.0106.0085.

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Shengnan Yan. "Cooperative Relaying in Large-Coverage Cognitive Radio Systems". International Journal of Digital Content Technology and its Applications 7, nr 5 (15.03.2013): 847–54. http://dx.doi.org/10.4156/jdcta.vol7.issue5.99.

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Elmenreich, W., N. Marchenko, H. Adam, C. Hofbauer, G. Brandner, C. Bettstetter i M. Huemer. "Building blocks of cooperative relaying in wireless systems". e & i Elektrotechnik und Informationstechnik 125, nr 10 (październik 2008): 353–59. http://dx.doi.org/10.1007/s00502-008-0571-7.

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Van, Hoang Thien, Hoang-Phuong Van, Danh Hong Le, Ma Quoc Phu i Hoang-Sy Nguyen. "Outage probability analysis for hybrid TSR-PSR based SWIPT systems over log-normal fading channels". International Journal of Electrical and Computer Engineering (IJECE) 11, nr 5 (1.10.2021): 4233. http://dx.doi.org/10.11591/ijece.v11i5.pp4233-4240.

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Employing simultaneous information and power transfer (SWIPT) technology in cooperative relaying networks has drawn considerable attention from the research community. We can find several studies that focus on Rayleigh and Nakagami-m fading channels, which are used to model outdoor scenarios. Differing itself from several existing studies, this study is conducted in the context of indoor scenario modelled by log-normal fading channels. Specifically, we investigate a so-called hybrid time switching relaying (TSR)-power splitting relaying (PSR) protocol in an energy-constrained cooperative amplify-and-forward (AF) relaying network. We evaluate the system performance with outage probability (OP) by analytically expressing and simulating it with Monte Carlo method. The impact of power-splitting (PS), time-switching (TS) and signal-to-noise ratio (SNR) on the OP was as well investigated. Subsequently, the system performance of TSR, PSR and hybrid TSR-PSR schemes were compared. The simulation results are relatively accurate because they align well with the theory.

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Rozprawy doktorskie na temat "Cooperative Relaying Systems"

Almradi, Ahmed Mohamed Ahmed. "Design and analysis of MIMO cooperative relaying systems". Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/design-and-analysis-of-mimo-cooperative-relaying-systems(07eae61a-0990-41a6-a988-46652e2cced0).html.

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Cooperative relaying techniques have recently received significant interests from both academia and industry due to their ability to provide spatial diversity to address the ever increasing demand for extended network coverage, higher data rates without sacrificing extra power resources, greater mobility and enhanced reliability. This thesis mainly considers two themes. Firstly, in the context of self-powered multiple-input-multiple-output (MIMO) full-duplex (FD) relaying, our research focuses on design and performance analysis of MIMO FD relaying systems in the presence of practical transmission impairments. Namely, the impact of spatial fading correlation, imperfect channel state information (CSI), loopback self-interference (LI), and co-channel interference (CCI) on the system performance are investigated. Secondly, in the context of wirelessly-powered MIMO HD relaying, our research focuses on energy beamforming which is used to maximize the overall harvested energy so as to enable longer-distance wireless power transfer when compared to the single antenna nodes. Namely, in the presence of MIMO relaying systems, hop-by-hop information and energy beamforming is proposed where the transmitted signal is steered along the strongest eigenmode of each hop. The wirelessly powered relay scavenge energy from the source information radio-frequency (RF) signal through energy beamforming, where both the time-switching receiver (TSR) and power-splitting receiver (PSR) are considered, then uses the harvested energy to forward the source message to the destination. Our research focuses on developing a comprehensive analytical framework for deriving new closed-form expressions for the outage probability and ergodic capacity for amplify-and-forward (AF) relaying systems, including simpler tight bounds and asymptotic high signal-to-noise (SNR) ratio analysis. First, the optimization problem for the design of source, relay, and destination precoding and/or decoding weight vectors which maximizes the overall signal-to-interference-plus-noise ratio (SINR) is formulated. Then, in order to get closed-form precoding and decoding weight vectors, a sub-optimal solution based on null space projection designed to completely suppress the LI and/or CCI is proposed, through which a closed-form overall SINR is presented. Simulation results show the exactness and tightness of the proposed exact and bound analytical expressions, respectively.

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Guerrero, Laura Yadira. "Cooperative diversity for distributed multicarrier relaying systems". Thesis, King's College London (University of London), 2017. https://kclpure.kcl.ac.uk/portal/en/theses/cooperative-diversity-for-distributed-multicarrier-relaying-systems(773aaeec-11e4-43b7-a1ff-cd3a86644a52).html.

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We introduce a Cooperative Distributed Multistage Spatial Diversity (CDMSD) scheme. By means of prior derived relaying topologies our algorithm relies on a robust and low complexity transceiver entity. CDMSD is implemented such as to improve throughput enhancement, coverage extension and spectral efficiency improvement. The benefits are provided by achieving full diversity and frequency selectivity. Simulation results are presented and compare to traditional non-distributed networks to support the analytical framework. Additionally fractional frame duration and transmitted power control are implemented to achieve higher data transmission rates. Providing a performance near optimum, our protocol has gained significantly in research momentum, mainly due to its ability to boost capacity and its inherent attribute of scalability to ad hoc and wireless sensor networks. CDMSD makes full use of MC-CDMA frequency domain spreading properties by introducing immerse collaboration and distributed frequency diversity in a multi-hop network architecture which has drawn much attention in industry and academia in terms of reliable performance.

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Zhang, Lu. "Decentralized cooperative communication for wireless relaying networks". Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 202 p, 2009. http://proquest.umi.com/pqdweb?did=1885757461&sid=5&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Yu, Hyungseok. "Performance of cooperative relaying systems with co-channel interference". Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45744.

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The cooperative relaying scheme is a promising technique for increasing the capacity and reliability of wireless communication. Even though extensive research has performed in information theoretical aspect, there are still many unresolved practical problems of cooperative relaying system. This dissertation analyzes the performance of cooperative decode-and-forward (DF) relaying systems in the presence of multiple interferers and improve network throughput for these systems. We propose and summarize various systems in the view of network topology, transmission structure, and slot allocation. We present closed-form expressions for the end-to-end outage probability, average symbol-error-probability, average packet-error-probability, and network throughput of the proposed systems. This dissertation shows that the robustness of the destination against interference is more important than robustness of the relay against interference from an interference management perspective, and increasing the number of branches yields better outage and error performance improvements against shadowing than increasing the number of hops. In cellular networks, the cooperative diversity systems can outperform the dual-Rx antenna system, but only when the relay is located in a relatively small portion of the total cell area with respect the the destination mobile terminal. The results also show that since the effective regions of the uplink and the downlink do not overlap, different relays should be utilized for cell sectorization in the uplink and the downlink. Finally, the proposed variable-slot selection DF scheme can reduce the system complexity and make the maximum throughput point in the low and moderate signal-to-interference-plus-noise ratio region.

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Ximenes, Leandro Ronchini. "Tensor-based MIMO relaying communication systems". reponame:Repositório Institucional da UFC, 2015. http://www.repositorio.ufc.br/handle/riufc/12931.

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XIMENES, L. R. Tensor-based MIMO relaying communication systems. 2015. 134 f. Tese (Doutorado em Engenharia de Teleinformática) – Centro de Tecnologia, Universidade Federal do Ceará, Fortaleza, 2015.
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In cooperative communication systems, two or more transmitting terminals are combined to increase the diversity and/or the power of the signals arriving at a particular receiver. Therefore, even if the devices do not have more than one antenna, or if a significant propaga- tion loss is present between the two communicating nodes, the various transmitting elements can act as a virtual antenna array, thus obtaining the benefits of the multiple antenna (MIMO) systems, especially the increase in the capacity. Recently, tensor decompositions have been introduced as an efficient approach for channel estimation in cooperative com- munication systems. However, among the few works devoted to this task, the utilization of the PARAFAC tensor decomposition for modeling the received signals did not allow the development of techniques for joint symbol and channel estimation. Aiming to avoid the use of pilot sequences, which limits the overall spectral efficiency by dedicating a portion of the bandwidth only for the channel estimation task, the objective of this thesis is to provide new tensor-based strategies, including transmission systems and semi-blind receivers, for one-way two-hop MIMO relaying systems. Based on a Khatri-Rao space-time coding at the source and two different Amplify-and-Forward (AF) relaying strategies, two transmission schemes are proposed. For these systems, named PT2-AF and NP-AF, the received signals at the destination node follow respectively a PARATUCK2 and a nested PARAFAC tensor model. Exploiting uniqueness properties of these tensor models which are established in the thesis, several semi-blind receivers are derived. Some of these receivers are of iterative form us- ing an ALS algorithm, whereas some other ones have closed-form solutions associated with Khatri-Rao factorizations. Some simulation results are finally presented to illustrate the per- formance of the proposed receivers which are compared to some state-of-the-art supervised techniques
Em comunicações cooperativas, dois ou mais terminais de transmissão são combinados para aumentar a diversidade e/ou a potencia dos sinais que chegam a um determinado receptor. Portanto, mesmo que os dispositivos não disponham de mais de uma antena, ou que então haja uma grande perda por propagação entre dois pontos comunicantes, os diversos elementos transmissores podem atuar como um arranjo virtual de antenas, obtendo-se assim vantagens dos sistemas de múltiplas antenas (MIMO), sobretudo o aumento da capacidade de transmissão. Recentemente, a chamada analise tensorial tem se mostrado uma abordagem eficiente então para a estimação de canais em sistemas com diversidade cooperativa. Contudo, nos poucos trabalhos dedicados a essa tarefa, a utilização da decomposição tensorial PARAFAC para a modelagem dos sinais recebidos não possibilitou o desenvolvimento de técnicas de estimação conjunta de canais e símbolos. Com a idéia de se evitar o uso de sequencias de treinamento, que limita a eficiência espectral da transmissão por dedicar uma parte da largura de banda apenas para a tarefa de estimação dos canais, o objetivo desta tese é prover novas estratégias de comunicação, em termos de sistemas de transmissão e receptores semi-cegos, baseados em tensores adaptados a sistemas cooperativos MIMO unidirecionais de dois saltos. Dois sistemas de transmissão são propostos utilizando uma codificação espaço-temporal do tipo Khatri-Rao na fonte e duas estrategias de processamento Amplify-and-Forward (AF) no relay. Para estes sistemas, nomeados PT2-AF e NP-AF, os sinais recebidos no chamado nó de destino satisfazem os modelos tensoriais do tipo PARATUCK2 e Nested PARAFAC. Explorando as propriedades de unicidade destes modelos tensoriais estabelecidas nesta tese, vários receptores semi-cegos são derivados. Alguns destes receptores são do tipo ALS, enquanto outros são de soluções baseadas na factorização de produtos de Khatri-Rao. Resultados de simulação são apresentados para ilustrar os desempenhos dos receptores propostos em comparação a alguns estimadores supervisionados

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Budhathoki, Krishna Ram. "Precoder Design for Cooperative Cognitive Radio Systems". University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1363180310.

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Jayasinghe, L. K. (Laddu Keeth Saliya). "Analysis on MIMO relaying scenarios in wireless communication systems". Doctoral thesis, Oulun yliopisto, 2015. http://urn.fi/urn:isbn:9789526207391.

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Abstract The thesis concentrates on evaluating and improving performances of various multiple-input multiple-output (MIMO) relaying scenarios that are particularly relevant to future wireless systems. A greater emphasis is placed on important practical situations, considering relay deployments, availability of channel state information (CSI), limitations of spectrum, and information secrecy. Initially, the performance of a non-coherent amplify-and-forward (AF) MIMO relaying is analyzed when the relay is deployed with the relay-to-destination channel having a line-of-sight (LoS) path. The main attention is given to analyzing the performance of orthogonal space-time block coded based non-coherent AF MIMO system. Exact expressions of statistical parameters and performance metrics are derived considering the instantaneous signal-to-noise ratio (SNR) received at the destination. These performance metrics reveal that a strong LoS component in relay-destination channel always limits the performance promised by MIMO scattering environment when both nodes have multiple antennas. The thesis also considers scenarios in MIMO two-way relaying (TWR) with physical layer network coding (PNC) mapping at the relay. PNC mapping becomes complex with multiple streams being combined at the relay node. Joint precoder-decoder schemes are considered to ease this, and various studies are carried out depending on the CSI. The zero-forcing criterion is used at the nodes when perfect CSI is available. For the imperfect CSI scenario, a robust joint precoder-decoder design is considered. The precoder and decoder matrices are obtained by solving optimization problems, which are formulated to maximize sum-rate and minimize weighted mean square error (WMSE) under transmit power constraints on the nodes. Next, a precoder-decoder scheme for MIMO underlay device-to-device (D2D) communication system is investigated by considering two D2D modes; PNC based D2D and direct D2D. The joint design is based on minimizing mean square error (MSE) which is useful to mitigate interference, and to improve the performance of both D2D and cellular communications. Distributed and centralized algorithms are proposed considering bi-directional communication in both D2D and cellular communications. System performance is discussed with two transmit mode selection schemes as dynamic and static selection schemes. The results show that the PNC based D2D mode extends the coverage area of D2D communication. Finally, secure beamforming schemes for the PNC based MIMO TWR systems are investigated when multiple eavesdroppers are attempting to intercept the user information. The CSI of the user-to-eavesdropper channels is imperfect at the users. The channel estimation errors are assumed with both ellipsoidal bound and Gaussian Markov uncertainty models. Robust optimization problems are formulated considering both scenarios to design beamforming vectors at the users and relay. Numerical results suggest that the proposed algorithms converge fast and provide higher security
Tiivistelmä Tässä väitöskirjassa keskitytään arvioimaan ja parantamaan suorituskykyä useissa moniantennitoistinjärjestelmissä, jotka ovat ajankohtaisia tulevaisuuden langattomissa verkoissa. Erityisesti työssä analysoidaan tärkeitä käytännön tilanteita, sisältäen toistimien sijoittamisen, kanavatiedon saatavuuden, rajoitetun taajuuskaistan ja tiedon salauksen. Aluksi epäkoherentin, vahvistavan ja jatkolähettävän moniantennitoistimen suorituskykyä analysoidaan tilanteessa, jossa toistin on sijoitettu siten, että kohteeseen on suora yhteys. Suorituskyvyn arvioinnin pääkohteena on ortogonaalinen tila-aika-tason lohkokoodattu epäkoherentti vahvistava ja jatkolähettävä moniantennitoistin. Työssä johdetaan tarkat lausekkeet tilastollisille parametreille ja suorituskykymittareille ottaen huomioon hetkellinen signaalikohinasuhde vastaanottimessa. Nämä suorituskykymittarit ilmaisevat, että toistimen ja kohteen välillä oleva vahva suoran yhteyden komponentti rajoittaa sitä suorituskykyä, jota moniantennijärjestelmän hajontaympäristö ennustaa. Työssä tutkitaan myös kahdensuuntaisia moniantennitoistimia, jotka käyttävät fyysisen kerroksen verkkokoodausta. Koodauksesta tulee monimutkaista, kun monia datavirtoja yhdistetään toistimessa. Tämän helpottamiseksi käytetään yhdistettyä esikoodaus-dekoodausmenetelmää, jota tutkitaan erilaisten kanavatietojen tapauksissa. Täydellisen kanavatiedon tapauksessa käytetään nollaanpakotuskriteeriä. Epätäydellisen kanavatiedon tapauksessa käytetään robustia yhdistettyä esikoodaus-dekoodausmenetelmää. Esikoodaus- ja dekoodausmatriisit saadaan ratkaisemalla optimointiongelmat. Nämä ongelmat on muodostettu maksimoimaan summadatanopeus, ja minimoimaan painotettu keskineliövirhe, kun optimointirajoitteina ovat solmujen lähetystehot. Seuraavaksi esikoodaus-dekoodausmenetelmää tutkitaan moniantennijärjestelmässä, jossa käytetään kahdentyyppistä laitteesta-laitteeseen (D2D) kommunikaatiomenetelmää: fyysisen kerroksen verkkokoodaukseen pohjautuvaa D2D- ja suoraa D2D-kommunikaatiota. Yhteissuunnittelu perustuu keskineliövirheen minimointiin, joka on hyödyllistä, kun halutaan vähentää häiriötä ja parantaa molempien verkkojen suorituskykyä. Työssä ehdotetaan hajautettuja ja keskitettyjä algoritmeja tilanteessa, jossa käytetään kaksisuuntaista kommunikaatiota molemmissa verkoissa. Järjestelmän suorituskykyä arvioidaan, kun käytetään kahta eri lähetystilan valintaa, dynaamista ja staattista. Tulokset osoittavat, että fyysisen kerroksen verkkokoodaukseen pohjautuva D2D kasvattaa D2D-kommunikaatiojärjestelmän kantamaa. Lopuksi, turvallisia keilanmuodostustekniikoita arvioidaan fyysisen kerroksen verkkokoodaukseen pohjautuvassa kahdensuuntaisessa moniantennitoistinjärjestelmässä, kun useat salakuuntelijat yritävät siepata käyttäjätiedon. Käyttäjillä on epäideaalinen kanavatieto heidän ja salakuuntelijoiden välisten linkkien kanavista. Kanavatiedon estimointivirheitä arvioidaan ellipsoidisella ja Gauss-Markov-epävarmuusmallilla. Robustit optimointiongelmat, joissa suunnitellaan keilanmuodostusvektorit käyttäjän ja toistimen välille, muodostetaan molemmille malleille. Numeeriset tulokset osoittavat, että ehdotetut algoritmit konvergoituvat nopeasti ja tarjoavat korkeamman turvallisuuden

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Zafar, Bilal [Verfasser], Martin Akademischer Betreuer] Harrdt, Andreas [Gutachter] [Mitschele-Thiel i Ben Slimane [Gutachter] Slimane. "Analysis and Ad-hoc Networking Solutions for Cooperative Relaying Systems / Bilal Zafar ; Gutachter: Andreas Mitschele-Thiel, Ben Slimane Slimane ; Betreuer: Martin Harrdt". Ilmenau : TU Ilmenau, 2014. http://d-nb.info/1178183262/34.

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Fukuzono, Hayato. "Spatial Signal Processing on Distributed MIMO Systems". 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/217206.

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Basharati, Sarhad. "MIMO and Relay Systems Based on Multi-Amplitude Minimum Shift Keying". Thesis, University of Canterbury. Electrical and Computer Engineering, 2013. http://hdl.handle.net/10092/8491.

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This thesis describes the use of a multi-amplitude minimum shift keying (MAMSK) signal in various types of wireless communication system. A MAMSK signal is a bandwidth efficient modulation scheme obtained by superimposing ℳ minimum shift keying (MSK) signals with unequal amplitudes. The overall phase of a MAMSK signal is controlled by the phase of the largest component MSK signal which allows the use of a low-complexity differential detector. A closed form expression for the average bit error rate (BER) for coherent detection of an MAMSK in AWGN is derived and is shown to achieve the same BER as that of square constellation quadrature amplitude modulation (QAM) with the same average transmit power. We describe the design and implementation of a STBC-based MIMO radio system in conjunction with MAMSK modulation. The proposed system provides high capacity data transmission by carrying information not only in the phases but also in the amplitude. Despite using a simple MAMSK differential receiver the system achieves performance within 1 dB of coherent detection. The existing MSK modems in conjunction with STBC could easily be modified to construct the proposed system. The MAMSK modulation scheme is extended to a multiuser relaying network where two nodes cooperate in a half-duplex environment to achieve diversity gain. The cooperative scheme is based on superposition modulation using a decode-and-forward (DF) strategy. In the proposed scheme, each node simultaneously transmits its own and the relayed signals by superimposing one on the other. A MAMSK signal is an excellent choice for this type of cooperative communication due its being obtained by a superposition technique. The proposed system exploits the overall phase of a MAMSK signal which allows differential detection and as a result it provides the lowest decoding complexity and memory requirements among the existing superposition based cooperation schemes. The performance of the system is evaluated by simulation, where it is shown that the MAMSK cooperative system outperforms a conventional DF scheme in terms of both power and bandwidth efficiency.

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Części książek na temat "Cooperative Relaying Systems"

Dinh, Son, Hang Liu i Feng Ouyang. "Massive MIMO Cognitive Cooperative Relaying". W Wireless Algorithms, Systems, and Applications, 98–110. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23597-0_8.

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Hong, Y. W. Peter, Wan-Jen Huang i C. C. Jay Kuo. "Cooperation Relaying in OFDM and MIMO Systems". W Cooperative Communications and Networking, 271–316. Boston, MA: Springer US, 2010. http://dx.doi.org/10.1007/978-1-4419-7194-4_7.

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Afanasieva, Liana, i Sergey Kravchuk. "Wireless Systems with New Cooperative Relaying Algorithm". W Advances in Information and Communication Technology and Systems, 274–88. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58359-0_15.

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Najjar, Abdelhalim, Noureddine Hamdi i Ammar Bouallegue. "Resource Allocation in Cooperative Relaying for Multicell OFDMA Systems". W Multiple Access Communications, 107–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23795-9_10.

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Liu, Yinshan, Xiaofeng Zhong, Yang Yan, Jing Wang i Walid Saad. "Contract Theory for Incentive Mechanism Design in Cooperative Relaying Networks". W Wireless Algorithms, Systems, and Applications, 302–12. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07782-6_28.

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Xiao-qiang, Zhong. "Blind Channel Estimation of Relaying Cooperative Communication in IoT Systems". W Advances in Intelligent and Soft Computing, 85–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27957-7_11.

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Noordin, Kamarul Ariffin Bin, Mhd Nour Hindia, Faizan Qamar i Kaharudin Dimyati. "Power Allocation Scheme Using PSO for Amplify and Forward Cooperative Relaying Network". W Advances in Intelligent Systems and Computing, 636–47. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01177-2_47.

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Joshi, Shital, i Malaykumar Shitalkumar Bhakta. "Power Efficient Multi-relay Cooperative Diversity in Wireless Network Using Hybrid Relaying Protocol". W Advances in Intelligent Systems and Computing, 60–78. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39445-5_7.

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Najjar, Abdelhalim, Noureddine Hamdi i Ammar Bouallegue. "Fractional Frequency Reuse Scheme in Cooperative Relaying For Multi-cell OFDMA Systems". W Multiple Access Communications, 199–210. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15428-7_20.

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Arya, Rajeev, Nandkishor Joshi i Akhilesh Panchal. "Performance of Cooperative Relaying Techniques Over Different Fading Channels in Industrial Wireless Sensor Networks". W Advances in Intelligent Systems and Computing, 1117–26. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0751-9_103.

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Streszczenia konferencji na temat "Cooperative Relaying Systems"

Haiyan Luo, Zhaoyang Zhang i Guanding Yu. "Cognitive cooperative relaying". W 2008 11th IEEE Singapore International Conference on Communication Systems (ICCS). IEEE, 2008. http://dx.doi.org/10.1109/iccs.2008.4737433.

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Figuera, Carlos, Eduardo Morgado, Antonio J. Caamano i Alfonso Cano. "Direct Link Aware Cooperative Relaying". W 2006 3rd International Symposium on Wireless Communication Systems. IEEE, 2006. http://dx.doi.org/10.1109/iswcs.2006.4362306.

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Pejanovic-Djurisic, Milica, i Enis Kocan. "Relaying techniques for cooperative communication systems". W 2011 19th Telecommunications Forum Telfor (TELFOR). IEEE, 2011. http://dx.doi.org/10.1109/telfor.2011.6143577.

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Jie Yang, Deniz Gunduz, D. Richard Brown i Elza Erkip. "Resource allocation for cooperative relaying". W 2008 42nd Annual Conference on Information Sciences and Systems (CISS). IEEE, 2008. http://dx.doi.org/10.1109/ciss.2008.4558638.

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Bhatnagar, Manav R., i Are Hjorungnes. "Downlink Cooperative Communication Using Differential Relaying". W 2007 4th International Symposium on Wireless Communication Systems. IEEE, 2007. http://dx.doi.org/10.1109/iswcs.2007.4392372.

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Ponnaluri, Satya Prakash, i Stephen G. Wilson. "Cooperative Relaying with Carrier Frequency Uncertainty". W 2007 41st Annual Conference on Information Sciences and Systems. IEEE, 2007. http://dx.doi.org/10.1109/ciss.2007.4298331.

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Amara, Sami, i Hatem Boujemaa. "Multihop Multibranch DF Relaying for Cooperative Systems". W 2011 IEEE Vehicular Technology Conference (VTC 2011-Spring). IEEE, 2011. http://dx.doi.org/10.1109/vetecs.2011.5956764.

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Jacobson, K. R., i W. A. Krzymien. "Cooperative vs multihop relaying in cellular systems". W 2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2009). IEEE, 2009. http://dx.doi.org/10.1109/pimrc.2009.5450005.

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Xiao, Yao, i Leonard J. Cimini. "Spectral efficiency of distributed cooperative relaying". W 2011 45th Annual Conference on Information Sciences and Systems (CISS). IEEE, 2011. http://dx.doi.org/10.1109/ciss.2011.5766228.

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Thiele, Lars. "Session MP8a4: MIMO OFDM and cooperative relaying". W 2008 42nd Asilomar Conference on Signals, Systems and Computers. IEEE, 2008. http://dx.doi.org/10.1109/acssc.2008.5074556.

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