Academic literature on the topic 'CDMA'
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Journal articles on the topic "CDMA"
Kawski, A., B. Kukliński, and P. Bojarski. "Influence Of The Irradiation Time On The Absorption And Emission Spectra Of P-Cyano-N,N-Dialkylanilines In Polar Solvents." Zeitschrift für Naturforschung A 58, no. 7-8 (August 1, 2003): 411–18. http://dx.doi.org/10.1515/zna-2003-7-805.
Full textKim, Taeyoon, Jeffrey G. Andrews, Jaeweon Kim, and Theodore S. Rappaport. "Multi-code Multicarrier CDMA: Performance Analysis." Journal of Communications Software and Systems 2, no. 1 (April 6, 2017): 12. http://dx.doi.org/10.24138/jcomss.v2i1.301.
Full textYU, XIANGBIN, XIAODONG ZHANG, and GUANGGUO BI. "PERFORMANCE ANALYSIS OF MULTICARRIER CDMA SYSTEM BASED ON COMPLEX WAVELET PACKET AND SPACE–TIME BLOCK CODES IN RAYLEIGH FADING CHANNEL." Journal of Circuits, Systems and Computers 15, no. 01 (February 2006): 57–74. http://dx.doi.org/10.1142/s0218126606002939.
Full textHawej, M. "INTERFERENCE MITIGATION BASED ON CARRIER INTERFEROMETRY CODES IN THE DOWNLINK LOW EARTH ORBIT SATELLITE CHANNEL." مجلة الجامعة الأسمرية: العلوم التطبيقية 6, no. 5 (December 31, 2021): 523–35. http://dx.doi.org/10.59743/aujas.v6i5.1509.
Full textZheng, Liang, and Bin Yan. "The Performance Analysis of CDMA Traffic Access Self-Similar Equalization Protocol." Applied Mechanics and Materials 490-491 (January 2014): 1205–8. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.1205.
Full textHarlen, Sekar, Eva Yovita Dwi Utami, and Andreas Ardian Febrianto. "Bit Error Rate pada Sistem MIMO MC-CDMA dengan Teknik Alamouti-STBC." Techné : Jurnal Ilmiah Elektroteknika 16, no. 02 (October 2, 2017): 99–109. http://dx.doi.org/10.31358/techne.v16i02.163.
Full textAmbrosio, Jefferson Santos, Francisco De Assis Scannavino Junior, and Taufik Abrão. "Seleção de sequências de espalhamento e Desempenho de Sistemas DS/CDMA." Semina: Ciências Exatas e Tecnológicas 37, no. 1 (March 16, 2016): 55. http://dx.doi.org/10.5433/1679-0375.2016v37n1p55.
Full textPanday, Sarika, and Saurabh Sardey. "GSM and CDMA Based Communication System." Journal of Communication Engineering and its Innovations 8, no. 2 (August 30, 2022): 21–25. http://dx.doi.org/10.46610/jocei.2022.v08i02.004.
Full textMestoui, Jamal, Mohammed El Ghzaoui, Serghini Elaage, Abdelmounim Hmamou, and Jaouad Foshi. "CE-OFDM-CDMA Phase Modulation for 5G System." International Journal of Mathematical, Engineering and Management Sciences 6, no. 4 (July 18, 2021): 1100–1114. http://dx.doi.org/10.33889/ijmems.2021.6.4.065.
Full textKusumawardhani, Eka, Rina Pudji Astuti, Nachwan Mufti Adriansyah, Fitri Imansyah, and Leonardus Sandy Ade Putra. "Performance Analysis of Multiple Input Multiple Output (MIMO) Multi-Carrier Code-Division Multiple Access (MC-CDMA) Combined with Quasi-Orthogonal Space Time Block Coding (QO-STBC) in Rayleigh Fading Channel." POSITRON 12, no. 2 (November 30, 2022): 120. http://dx.doi.org/10.26418/positron.v12i2.46613.
Full textDissertations / Theses on the topic "CDMA"
Deus, Junior Getulio Antero de. "Sistemas FFH-CDMA codificados." [s.n.], 2002. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260269.
Full textTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
Made available in DSpace on 2018-08-02T01:11:32Z (GMT). No. of bitstreams: 1 DeusJunior_GetulioAnterode_D.pdf: 9215941 bytes, checksum: 93364e4dd602d44e4f2d6d1758043dfd (MD5) Previous issue date: 2002
Resumo: Neste trabalho é desenvolvido um estudo sobre um sistema FFH-CDMA cujo receptor de máxima verossimilhança (MV) não-quantizado necessita de uma não-linearidade de difícil implementação. Para um sistema FFH-CDMA não-codificado propomos a utilização de um único perceptron para a implementação da não-linearidade. Esta proposta demonstrou apresentar degradação desprezível quando comparada ao receptor de MV. O cálculo da probabilidade de erro par-a-par tanto para receptores quantizados quanto para não-quantizados, foi também realizado. Um sistema que utiliza um receptor de :MVnão-quantizado demonstrou possuir ganho considerável em termos do número de usuários simultâneos quando comparado a um sistema quantizado. Motivados por este fato, realizamos cálculos para a capacidade de canal por dimensão e para a taxa de corte de canal do sistema FFH-CDMA considerado. Os resultados mostraram ganhos significativos do sistema tanto em termos de número de usuários simultâneos, como também em termos de relação sinal-ruído (para a probabilidade e o número de usuários fixados). A partir de uma aproximação para a probabilidade de erro par-a-par, um critério de projeto dos codificadores é proposto. Alguns codificadores convolucionais que se adequam ao critério proposto podem ser encontrados da literatura. Resultados de desempenho obtidos através de simulação e de limitantes superiores para códigos convolucionais terminados encontrados na literatura, mostraram a eficiência do critério de projeto sugerido para os codificadores. A partir das expressões para a taxa de corte de canal pode-se obter valores otimizados para taxas de codificação. Nem todos estes valores se encontram na literatura. Sendo assim, um algoritmo de procura de codificadores foi desenvolvido de acordo com o critério de projeto sugerido. Vários codificadores foram encontrados que podem eventualmente ser utilizados em outras aplicações. Alguns codificadores obtidos comprovam que um sistema FFH-CDMA codificado, com uma treliça de 1024 estados, pode trabalhar bem próximo da taxa de corte de canal
Abstract: This work presents a study of FFH-CDMA systems whose maximum likelihood (ML) receiver uses a nonlinearity of difficult of implementation. For an uncoded FFH-CDMA system, we propose the use of an unique perceptron to approximate the optimum nonlinearity. The proposed perceptron has performance almost identical to ML detection. An unquantized FFH-CDMA system can support a considerable greater number of simultaneous active users than a quantized FFH-CDMA system. Motivated by this fact, we evaluated the normalized sum capacity and the channel cutoff rate of the considered system. The results have showed expressive gains of an unquantized FFH-CDMA system in terms of number of active users as well as in terms of signal-to-noise ratio. Starting from an approximation of the pairwise error probability, a design criterion is proposed. Performance results obtained through computer simulation and upper bounds for convolutional codes found in the literature, showed the effectiveness of the proposed design criterion. A search algorithm for finding codes based on this criterion was implemented. Some of the coders obtained give evidence that a coded FFH-CDMA system, with a trellis of 1024 states, can work near channel cutoff rate
Doutorado
Telecomunicações e Telemática
Doutor em Engenharia Elétrica
Venkatasubramanian, Ramasamy. "Beamforming for MC-CDMA." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31287.
Full textMaster of Science
LE, BOT MARIE. "Antennes adaptatives en CDMA." Paris, CNAM, 2001. http://www.theses.fr/2001CNAM0384.
Full textSHEN, HANHONG. "SEMIBLIND MULTIUSER DETECTION FOR MC-CDMA." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1127324165.
Full textSHARMA, ANSHUL. "Performance Analysis of MC-CDMA and CI/MC-CDMA Using Interference Cancellation Techniques." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1218826853.
Full textJakubek, David Andrew. "Coherent/noncoherent detection of coherent optical heterodyne DPSK-CDMA and MFSK-CDMA signals." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/28033.
Full textHaiou, Zheng, and Zhang Naitong. "ANALYSIS OF HYBRID FDMA/CDMA SYSTEMS IN RICIAN FADING." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/606808.
Full textIn this paper, a hybrid frequency division multiple access/code division multiple access (FDMA/CDMA) system in a Rician fading channel is described and analysis. The performance of the hybrid system is compared with a wideband CDMA system, which occupies the same total bandwidth. The results show that for DPSK modulation with a RIKE receiver, a hybrid system can have a greater capacity with a strong direct path component or a high signal to noise ratio (SNR). Otherwise, a wideband system remains optimal.
Cheung, Tze Chiu. "2GHz W-CDMA Radio Transceiver." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36411.
Full textMaster of Science
Duran, Omer Agah. "Multiuser Receivers For Cdma Downlink." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609953/index.pdf.
Full textWan, William Ming. "Digital CDMA multi-carrier demodulator." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/MQ28260.pdf.
Full textBooks on the topic "CDMA"
Tachikawa, Keiji, ed. W-CDMA. Chichester, UK: John Wiley & Sons, Ltd, 2002. http://dx.doi.org/10.1002/0470854642.
Full textTachikawa, Keiji, ed. W-CDMA. Chichester, UK: John Wiley & Sons, Ltd, 2002. http://dx.doi.org/10.1002/0470854642.
Full textGhafouri-Shiraz, Hooshang, and M. Massoud Karbassian. Optical CDMA Networks. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781119941330.
Full textHanzo, L., and T. Keller. OFDM and MC-CDMA. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/9780470031384.
Full textIpatov, Valery P. Spread Spectrum and CDMA. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470091800.
Full textChen, Hsiao-Hwa. Next generation CDMA technologies. Hoboken, NJ: John Wiley, 2007.
Find full textCDMA systems capacity engineering. Norwood, MA: Artech House, 2005.
Find full textIpatov, Valery P. Spread Spectrum and CDMA. New York: John Wiley & Sons, Ltd., 2005.
Find full textYang, Samuel C. CDMA RF system engineering. Boston: Artech House, 1998.
Find full textE, Miller Leonard, ed. CDMA systems engineering handbook. Boston, Mass: Artech House, 1998.
Find full textBook chapters on the topic "CDMA"
Klostermeyer, Rüdiger. "Codespreizverfahren — CDMA." In Digitale Modulation, 287–331. Wiesbaden: Vieweg+Teubner Verlag, 2001. http://dx.doi.org/10.1007/978-3-322-89549-3_6.
Full textWong, Marcus. "CDMA Femtocells." In Femtocells, 93–118. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003338178-6.
Full textXavier, Bruno de Souza Abreu, and Arlindo Moreira Fartes Filho. "CDMA Evolution." In Designing cdma2000® Systems, 15–50. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470020121.ch2.
Full textHassan, Amer A., John E. Hershey, and Gary J. Saulnier. "Spatial Optical CDMA." In Perspectives in Spread Spectrum, 107–25. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5531-5_5.
Full textHöher, Peter Adam. "DS-CDMA-Empfängerkonzepte." In Grundlagen der digitalen Informationsübertragung, 471–86. Wiesbaden: Vieweg+Teubner, 2011. http://dx.doi.org/10.1007/978-3-8348-9927-9_23.
Full textStüber, Gordon L. "CDMA Cellular Systems." In Principles of Mobile Communication, 563–92. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-55615-4_12.
Full textHöher, Peter Adam. "DS-CDMA-Empfängerkonzepte." In Grundlagen der digitalen Informationsübertragung, 625–42. Wiesbaden: Springer Fachmedien Wiesbaden, 2013. http://dx.doi.org/10.1007/978-3-8348-2214-7_24.
Full textTerré, Michel, Mylène Pischella, and Emmanuelle Vivier. "CDMA and UMTS." In Wireless Telecommunication Systems, 59–94. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118625422.ch3.
Full textStüber, Gordon L. "CDMA Cellular Systems." In Principles of Mobile Communication, 665–703. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0364-7_12.
Full textSilva, Paulo, and Rui Dinis. "DS-CDMA and MC-CDMA Systems with Nonlinear Transmitters." In Frequency-Domain Multiuser Detection for CDMA Systems, 137–92. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003338208-5.
Full textConference papers on the topic "CDMA"
Nakamura, Moriya, and Ken-ichi Kitayama. "Error-free Transmission in Optical Space-CDMA for 2-D Parallel Data Links." In Optics in Computing. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/oc.1997.othd.9.
Full textInaty, Elie, Robert Raad, and Paul Fortier. "CDMA based dynamic bandwidth allocation (CDBA) scheme for EPON." In ICC 2012 - 2012 IEEE International Conference on Communications. IEEE, 2012. http://dx.doi.org/10.1109/icc.2012.6364134.
Full textTakasago, K., T. Furusawa, and F. Kanuari. "Femtosecond code-division multiple-access system with 1.3 μm Cr:forsterite laser." In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.ctui63.
Full textLee, Yoonill. "Performance Analysis of DS-CDMA and MC-CDMA Systems." In 2018 9th IEEE Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON). IEEE, 2018. http://dx.doi.org/10.1109/uemcon.2018.8796635.
Full textWu, Zhiqiang, and Carl R. Nassar. "Ultra wideband MC-CDMA and CI/MC-CDMA systems." In ITCom 2002: The Convergence of Information Technologies and Communications, edited by Carl R. Nassar. SPIE, 2002. http://dx.doi.org/10.1117/12.455395.
Full textMa, Meng, Yuli Yang, Hongbing Cheng, and Bingli Jiao. "A Capacity Comparison Between MC-CDMA and CP-CDMA." In IEEE Vehicular Technology Conference. IEEE, 2006. http://dx.doi.org/10.1109/vtcf.2006.363.
Full textFrigyes, Istvan. "CDMA in Optics." In 2006 IEEE Ninth International Symposium on Spread Spectrum Techniques and Applications. IEEE, 2006. http://dx.doi.org/10.1109/isssta.2006.311813.
Full textAli, Zahid, Mohamad A. Deriche, and Mohamed Adnan Landolsi. "CDMA multiuser radiolocation." In 2010 IEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications Workshops (PIMRC Workshops). IEEE, 2010. http://dx.doi.org/10.1109/pimrcw.2010.5670369.
Full textLeeson, M. S., K. Cui, and E. L. Hines. "Enhancing optical CDMA." In 2009 11th International Conference on Transparent Optical Networks (ICTON). IEEE, 2009. http://dx.doi.org/10.1109/icton.2009.5185306.
Full textGao, Kanke, Stella N. Batalama, Dimitris A. Pados, and John D. Matyjas. "Cognitive CDMA channelization." In 2009 Conference Record of the Forty-Third Asilomar Conference on Signals, Systems and Computers. IEEE, 2009. http://dx.doi.org/10.1109/acssc.2009.5469930.
Full textReports on the topic "CDMA"
Ghaffari, B., and E. Geraniotis. Analysis of Coherent Random-Carrier CDMA and Hybrid WDMA/CDMA Multiplexing for High-Capacity Optical Networks. Fort Belvoir, VA: Defense Technical Information Center, January 1989. http://dx.doi.org/10.21236/ada454792.
Full textVerdu, Sergio. Multi-User Detection for Next-Generation CDMA. Fort Belvoir, VA: Defense Technical Information Center, December 2000. http://dx.doi.org/10.21236/ada391148.
Full textYokota, H., and G. Dommety. Mobile IPv6 Fast Handovers for 3G CDMA Networks. RFC Editor, June 2008. http://dx.doi.org/10.17487/rfc5271.
Full textHonig, Michael L. Linear Interference Suppression and Pulse Optimization for DS-CDMA. Fort Belvoir, VA: Defense Technical Information Center, November 1999. http://dx.doi.org/10.21236/ada371495.
Full textMitra, Urbashi. Instrumentation to Support Advanced Research in Wireless CDMA Communications. Fort Belvoir, VA: Defense Technical Information Center, November 2003. http://dx.doi.org/10.21236/ada419513.
Full textIrizarry, Alfredo V. Average Likelihood Methods for Code Division Multiple Access (CDMA). Fort Belvoir, VA: Defense Technical Information Center, May 2014. http://dx.doi.org/10.21236/ada603961.
Full textIrizarry, Alfredo V. Average Likelihood Methods of Classification of Code Division Multiple Access (CDMA). Fort Belvoir, VA: Defense Technical Information Center, May 2016. http://dx.doi.org/10.21236/ad1009582.
Full textMitra, Urbashi. New Robust Estimation/Detection Techniques With Applications to Wireless CDMA Communications. Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada379418.
Full textWieselthier, Jeffrey E., Anthony Ephremides, and Julie A. Tarr. A Distributed Reservation-Based CDMA Protocol That Does Not Require Feedback Information. Fort Belvoir, VA: Defense Technical Information Center, October 1986. http://dx.doi.org/10.21236/ada453164.
Full textJia, Tao, and Alexandra Duel-Hallen. Improved Channel Allocation for Multicarrier CDMA with Adaptive Frequency Hopping and Multiuser Detection. Fort Belvoir, VA: Defense Technical Information Center, August 2008. http://dx.doi.org/10.21236/ada500434.
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