IS-95反向信道在Nakagami(m)多径衰落信道下的性能分析
PERFORMANCE ANALYSIS OF IS-95 REVERSE CHANNEL OVER NAKAGAMI(m) MULTIPATH FADING CHANNEL
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摘要: IS-95是北美制定的基于CDMA技术的无线空中接口标准,本文给出了IS-95反向信道调制和解调过程的数学模型。一般认为Nakagami(m)分布较好地描述了多径衰落信道,本文分析了IS-95反向信道在Nakagami(m)衰落信道下的误码率,结果可以用来综合分析系统和信道的不同参数对系统性能的影响。Abstract: This article deals with the reverse channel of IS-95 based cellular CDMA system. The M-ary OQPSK(Offset Quadrature Phase Shift Keying) modulation process and the RAKE receiver are described. Bit error rate over Nakagami(m) multi-path fading channel is derived and the result is used to investigate the influence of different parameters to the overall system performance.
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TIA/EIA/IS-95, Mobile Station-Base Station Compatibility Standard for Dual-Mode Wide-band[2]Spread Spectrum Cellular System. Telecommunication Industry Association, July, 1993.[3]Pursley M B. Performance evaluation for phase-coded spread spectrum multiple access[4]communication-Part 1: System analysis. IEEE Trans. on Comm., 1977, 25(8): 795-799.[5]Patel P, Holtzman J M. Analysis of a simple successive interference cancellation scheme in a DS/CDMA system[J].IEEE J. Selected Areas in Communications.1994, 12(5):796-807[6]Louay M A. Jalloul, Holtzman J M. Performance analysis of DS/CDMA with non-coherent M-[7]ary orthogonal modulation in multipath fading channels. IEEE Journal on Selected Areas in Communications, 1994, 12(5): 862-870.[8]Kyoung II Kim. On the error probability of a DS/SSMA system with a non-coherent M-ary[9]orthogonal modulation. Proceeding of IEEE Vehicular Technology Conference, Denver, CO: 1992,482-485.[10]Bi Q. Performance analysis of CDMA cellular system. Proceeding of IEEE Vehicular Technology Conference, Denver, CO: 1992, 482-485.[11]Hong E K, Kim K J, Whang K C. Performance valuation of DS-CDMA systeri with M-ary orthogonal signaling[J].IEEE Trans. on Vehicular Technology.1991, 40(1):57-63[12]Eng T, Milstein L B. Coherent DS-CDMA performance in Nakagami multi-path fading[J].IEEE Trans. on Comm.1995, 43(2/3/4):1134-1143[13]Papoulis A. Probability, random variables, and stochastic processes. New York: McGraw-Hill, 1965, Chapter 4.[14]Proakis J G. Digital Communications. and ed. New York: McGraw-Hill, 1995, Chapter 13-15. -
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