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Artykuły w czasopismach na temat "WCDMA"
Xiao, Fu, i Li-ming Xiao. "Hardware Platform Design for Baseband Data Transmission of WCDMA Based on USB3.0". MATEC Web of Conferences 246 (2018): 03005. http://dx.doi.org/10.1051/matecconf/201824603005.
Pełny tekst źródłaZhang, Lian Jun, i Shi Jie Liu. "Research of Bus Video Monitoring System Based on WCDMA". Applied Mechanics and Materials 543-547 (marzec 2014): 891–94. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.891.
Pełny tekst źródłaKhleaf, Hussain K., Ali Kareem Nahar i Ansam S. Jabbar. "Optimizing frequency synthesizer performance based on passive adder entrenched technique for 4G communication systems". Bulletin of Electrical Engineering and Informatics 11, nr 2 (1.04.2022): 901–8. http://dx.doi.org/10.11591/eei.v11i2.3196.
Pełny tekst źródłaNafik, Ichsyan, i Yuniarto Yuniarto. "RANCANG BANGUN ANTENNA WAJANBOLIC DENGAN DIAMETER 46 CENTIMETER PADA FREKUENSI 1900 MHz UNTUK MEMPERKUAT PENERIMAAN SINYAL WCDMA". Gema Teknologi 17, nr 1 (1.10.2012): 1. http://dx.doi.org/10.14710/gt.v17i1.8815.
Pełny tekst źródłaChen, Hang, Shun Wen Jiang i Gui Fen Chen. "Design and Implement Wireless Temperature Sensor Network Based on Distributed Platform". Applied Mechanics and Materials 303-306 (luty 2013): 114–19. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.114.
Pełny tekst źródłaBahl, S. K. "Cell searching in WCDMA". IEEE Potentials 22, nr 2 (kwiecień 2003): 16–19. http://dx.doi.org/10.1109/mp.2003.1197876.
Pełny tekst źródłaStasiak, Maciej, Piotr Zwierzykowski i Janusz Wiewióra. "Analytical Modeling of the WCDMA Interface with Packet Scheduling". Journal of Telecommunications and Information Technology, nr 3 (26.06.2023): 103–10. http://dx.doi.org/10.26636/jtit.2009.3.946.
Pełny tekst źródłaLi, Yong, i Jie Li. "Performance of MIMO and 64QAM Application in HSPA+ System". Advanced Materials Research 774-776 (wrzesień 2013): 1703–8. http://dx.doi.org/10.4028/www.scientific.net/amr.774-776.1703.
Pełny tekst źródłaZhang, Ran. "A Portable Embedded Data Acquisition and Communication System". International Journal of Advanced Pervasive and Ubiquitous Computing 4, nr 4 (październik 2012): 1–6. http://dx.doi.org/10.4018/japuc.2012100101.
Pełny tekst źródłaLee, Jae-Yeong, Byeongkwan Kim, Myun-Joo Park i Byungje Lee. "Isolation Enhancement between Indoor Repeater Antennas with Chip Resistor Embedded FSS". International Journal of Antennas and Propagation 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/307616.
Pełny tekst źródłaRozprawy doktorskie na temat "WCDMA"
Suresh, Babu Kongaleti. "WCDMA in GSM". Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-18838.
Pełny tekst źródłaUppsatsnivå: D
Hooli, K. (Kari). "Equalization in WCDMA Terminals". Doctoral thesis, University of Oulu, 2003. http://urn.fi/urn:isbn:9514271831.
Pełny tekst źródłaPeteinatos, Ilias. "WCDMA for aeronautical communications". Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/11502.
Pełny tekst źródłaTörnqvist, David. "Transmission Timing in WCDMA terminals". Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1592.
Pełny tekst źródłaPower control is one of the technologies used to utilize the radio resources as efficient as possible in WCDMA. The transmission power is adjusted to transmit with the lowest power level possible while the required received signal quality is maintained. Since there are large variation in channel quality over time, the power has to be adjusted to compensate for these variations. During moments of bad channel conditions a high transmission power has to be used which will to a greater extent interfere with other users in the system.
To solve this problem a concept called transmission timing was proposed. The basic idea is that the transmitter avoids data transmission during the short periods of bad channel conditions caused by fast fading. Higher bit rates can be used to compensate for this when the channel conditions are good.
In this thesis the performance of transmission timing applied to uplink data transmissions is evaluated. This is accomplished through a theoretical analysis as well as simulations of a cellular system using transmission timing. Lowered transmission power is achieved and thus lowered interference is induced. Simulations showed that the transmission power can be lowered by up to 1.6 dB compared to ordinary continuous transmission with equal average data rate. These results are however strongly dependent on the used radio environment. It is also showed that transmission timing provides increased system stability in case of rapid changes in the load situation.
Johansson, Emil, i Kim Myhrman. "GSM/WCDMA Leakage Detection System". Thesis, Linköpings universitet, Elektroniksystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-66963.
Pełny tekst źródłaMOSTARDEIRO, MARIANA. "METHODS FOR WCDMA SYSTEMS PLANNING". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2003. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=5095@1.
Pełny tekst źródłaEste trabalho apresenta um estudo detalhado de técnicas de planejamento de sistemas celulares de terceira geração WCDMA. Primeiramente é realizado um estudo teórico do sistema WCDMA, da estrutura da interface aérea, dos diversos tipos de canais presentes no downlink e no uplink. A seguir são aprentadas técnicas de planejamento de rede, com uma análise detalhada do cálculo de enlace e do planejamento de cobertura do sistema celular. Com base neste estudo foram realizadas diversas simulações com o software aberto NPSW para diferentes situações em relação a tipos de serviço, condições de uso e carga no sistema. Estas simulações permitiram caracterizar os efeitos dos diversos parâmetros de entrada no desempenho do sistema. Finalmente, é apresentado um estudo de caso de planejamento para a região do centro do Rio de Janeiro.
This work presents a detailed study of planning tecniques for third generation WCDMA cellular systems. At first a theoretical study of the WCDMA system is presented, including the structure of the air interface and the various channel types in the downlink and uplink. Following, network planning techniques are presented, with a detailed analysis of the link budget calculations and the system coverage planning issues. Based on this study, the system behaviour was simulated using the open software NPSW for different configurations of service, operation condition and system load. The simulations allowed the characterization of the effect of several parameters on the system performance. Finally, a case study of coverage planning for downtown Rio de Janeiro is presented.
RAO, THUMATI VENKATA. "DATA PROCESSING DESIGN OF WIDEBAND CODE DIVISION MULTIPLE ACCESS (WCDMA)". Thesis, Blekinge Tekniska Högskola, Avdelningen för signalbehandling, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1318.
Pełny tekst źródłaPersson, Markus. "Uplink TDMA Potential in WCDMA Systems". Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11399.
Pełny tekst źródłaThe evolvement of the uplink in the third generation mobile telecommunication system is an ongoing process. The Enhanced Uplink (EUL) concept is being developed to meet the expected need from more advanced services, like video streaming and mobile broadband. One idea for further improvement in the EUL concept is to introduce Time Division Multiple Access (TDMA), which is studied in this master thesis.
The master thesis assignment is to study the consequences of introducing TDMA in EUL. The goal has been to identify the gains and problems, and how they can be handled. A derived theoretical framework and system simulations, using a radio network simulator, are used.
The overall conclusion is that there is a potentially large gain with an introduction of TDMA in EUL. Simulations in favorable conditions have shown that the system throughput can increase by 100% when there are only User Equipment (UE) that are using EUL in the system and by 50% when there is a mix of speech and EUL UE’s. When using TDMA the uplink load also shows improvements, the mean is generally higher but the variance is generally smaller.
Due to major differences in experienced interference between passive and active UE’s, the signal quality will vary a lot. The big variation in signal quality is identified as the main problem with introducing TDMA in EUL. It is shown that this problem can generate extreme high uplink load, which have a negative impact both on the resource efficiency and the coverage.
Folkeson, Tea. "WCDMA User Equipment Output Power Calibration". Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1691.
Pełny tekst źródłaTo save time in Flextronics high volume production, the time for test and calibration of mobile telephones need to be as short and accurate as possible. In the wideband code division multiple access (WCDMA) case, the output power calibration is the most critical calibration concerning accuracy. The aim with this thesis was to find a faster calibration method than the one that exists today and still retain accuracy.
The Third Generation Partnership Project (3GPP) outlines the requirements of the output power and they must be thoroughly considered when choosing calibration method. Measurement accuracy and the behavior of the transmitter chain parameters also must be considered.
The output power in the WCDMA phone studied is controlled by seven parameters. The parameters are characterized in this thesis, and are found to be too hardware dependent to be predicted or to be seen as predictions from each other.
Since no parameter predictions are possible it was stated that all parameters have to be measured, and a new way of measuring them in a faster way is proposed. The principle of the new measurement method is presented, and the implemented software is tested and evaluated. The new method mainly makes use of the spectrum analyzer zero span function.
The evaluation shows that the new method is faster than the original and retains accuracy. The measurement uncertainties even seem to diminish, which implicates decreased temperature dependence due to faster measurement time.
Chowdhury, Moyamer, i Aminul Alam. "Study Comparison of WCDMA and OFDM". Thesis, Blekinge Tekniska Högskola, Avdelningen för telekommunikationssystem, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1363.
Pełny tekst źródłaKsiążki na temat "WCDMA"
WCDMA design handbook. Cambridge: Cambridge Univeristy Press, 2005.
Znajdź pełny tekst źródłaHolma, Harri, i Antti Toskala, red. WCDMA for UMTS. Chichester, UK: John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470669501.
Pełny tekst źródłaChevallier, Christophe, Christopher Brunner, Andrea Garavaglia, Kevin P. Murray i Kenneth R. Baker, red. WCDMA (UMTS) Deployment Handbook. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/0470035749.
Pełny tekst źródłaTanner, Rudolf, i Jason Woodard, red. WCDMA - Requirements and Practical Design. Chichester, UK: John Wiley & Sons, Ltd, 2004. http://dx.doi.org/10.1002/0470861797.
Pełny tekst źródłaRudolf, Tanner, i Woodard Jason P, red. WCDMA: Requirements and practical design. Chichester: John Wiley & Sons, 2004.
Znajdź pełny tekst źródłaAdaptive WCDMA: Theory and practice. New York: John Wiley & Sons, 2003.
Znajdź pełny tekst źródłaWideband TDD: WCDMA for the unpaired spectrum. Chichester: Wiley, 2004.
Znajdź pełny tekst źródła1970-, Holma Harri, i Toskala Antti, red. WCDMA for UMTS: HSPA evolution and LTE. Wyd. 4. Chichester, UK: John Wiley & Sons, 2007.
Znajdź pełny tekst źródłaHolma, Harri. WCDMA for UMTS: HSPA evolution and LTE. Wyd. 5. Hoboken: Wiley, 2010.
Znajdź pełny tekst źródłaRamjee, Prasad, i Ojanperä Tero, red. WCDMA: Towards IP mobility and mobile internet. Boston: Artech House, 2001.
Znajdź pełny tekst źródłaCzęści książek na temat "WCDMA"
Muszynski, Peter, i Harri Holma. "Introduction to WCDMA". W WCDMA for UMTS, 47–60. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470870982.ch3.
Pełny tekst źródłaMuszynski, Peter, i Harri Holma. "Introduction to WCDMA". W WCDMA for UMTS, 47–59. Chichester, UK: John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470669501.ch3.
Pełny tekst źródłaHolma, Harri, Antti Toskala i Ukko Lappalainen. "Introduction". W WCDMA for UMTS, 1–10. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470870982.ch1.
Pełny tekst źródłaWigard, Jeroen, Harri Holma, Renaud Cuny, Nina Madsen, Frank Frederiksen i Martin Kristensson. "Packet Scheduling". W WCDMA for UMTS, 269–306. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470870982.ch10.
Pełny tekst źródłaToskala, Antti, Harri Holma, Troels Kolding, Preben Mogensen, Klaus Pedersen i Karri Ranta-Aho. "High-Speed Downlink Packet Access". W WCDMA for UMTS, 307–45. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470870982.ch11.
Pełny tekst źródłaHolma, Harri, Jussi Reunanen, Leo Chan, Preben Mogensen, Klaus Pedersen, Kari Horneman, Jaakko Vihriälä i Markku Juntti. "Physical Layer Performance". W WCDMA for UMTS, 347–410. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470870982.ch12.
Pełny tekst źródłaToskala, Antti, Harri Holma, Otto Lehtinen i Heli Väätäjä. "UTRA TDD Modes". W WCDMA for UMTS, 411–32. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470870982.ch13.
Pełny tekst źródłaToskala, Antti. "cdma2000". W WCDMA for UMTS, 433–45. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470870982.ch14.
Pełny tekst źródłaHolma, Harri, Martin Kristensson, Jouni Salonen i Antti Toskala. "UMTS Services and Applications". W WCDMA for UMTS, 11–45. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470870982.ch2.
Pełny tekst źródłaToskala, Antti. "Background and Standardisation of WCDMA". W WCDMA for UMTS, 61–73. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470870982.ch4.
Pełny tekst źródłaStreszczenia konferencji na temat "WCDMA"
Vanghi, V., i C. Chevallier. "WCDMA handover parameters optimization". W 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577). IEEE, 2004. http://dx.doi.org/10.1109/icc.2004.1313326.
Pełny tekst źródłaWigren, Torbjörn, i Jenni Wennervirta. "RTT Positioning in WCDMA". W 2009 Fifth International Conference on Wireless and Mobile Communications. IEEE, 2009. http://dx.doi.org/10.1109/icwmc.2009.57.
Pełny tekst źródłaNorthcote, Bruce S., i Nick A. Tompson. "Dimensioning Telstra's WCDMA (3G) network". W 2010 IEEE 15th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD). IEEE, 2010. http://dx.doi.org/10.1109/camad.2010.5686960.
Pełny tekst źródłaSadowsky, John S., i David K. Lee. "The MUOS-WCDMA Air Interface". W MILCOM 2007 - IEEE Military Communications Conference. IEEE, 2007. http://dx.doi.org/10.1109/milcom.2007.4455201.
Pełny tekst źródłaBilal, Khalid Hamid, Ibrahim Khider Eltahir i Amin Babiker. "Performance evaluation of DS-WCDMA". W 2013 International Conference on Computing, Electrical and Electronics Engineering (ICCEEE). IEEE, 2013. http://dx.doi.org/10.1109/icceee.2013.6633954.
Pełny tekst źródłaAbd El-atty, Saied M., Angelos N. Rouskas i Dimitrios N. Skoutas. "Handover Provisioning in WCDMA Systems". W 3rd International ICST Conference on Mobile Multimedia Communications. ICST, 2007. http://dx.doi.org/10.4108/icst.mobimedia2007.1591.
Pełny tekst źródłaCheng, J. F., Y. P. E. Wang i S. Parkvall. "Adaptive incremental redundancy [WCDMA systems]". W 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484). IEEE, 2003. http://dx.doi.org/10.1109/vetecf.2003.1285118.
Pełny tekst źródłaGunnarsson, F., D. Tornqvist, E. Geijer-Lundin, G. Bark, N. Wiberg i E. Englund. "Uplink transmission timing in WCDMA". W 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484). IEEE, 2003. http://dx.doi.org/10.1109/vetecf.2003.1285312.
Pełny tekst źródłaMalladi, D. "Introduction to WCDMA enhanced uplink". W Fifth IEE International Conference on 3G Mobile Communication Technologies (3G 2004) The Premier Technical Conference for 3G and Beyond. IEE, 2004. http://dx.doi.org/10.1049/cp:20040672.
Pełny tekst źródłaGrandell, K. J. "Indoor antennas for WCDMA systems". W 11th International Conference on Antennas and Propagation (ICAP 2001). IEE, 2001. http://dx.doi.org/10.1049/cp:20010272.
Pełny tekst źródłaRaporty organizacyjne na temat "WCDMA"
Ishak-Boushaki, Mustapah. Numerical Codes for the DESC-LSST Analysis Pipeline: Core Cosmology Library Standard Modules and Beyond wCDM Modules (Final Technical Report). Office of Scientific and Technical Information (OSTI), czerwiec 2021. http://dx.doi.org/10.2172/1797575.
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