Design and Analysis of Concatenated Coded DS/CDMA Systems in Asynchronous Channels
نویسندگان
چکیده
In this paper, we propose and analyze concatenated coding schemes for direct-sequence code-division multiple-access (DS/CDMA) systems in asynchronous channels. In the concatenated coding, bandwidth-efficient 2 -state L/(L+1)-rate 2MTCM with biorthogonal signal constellation is used for the inner code, and (2 1, d(2 1)/L/2e) RS code is used for the outer code. It is shown that we can get considerable performance gain over the uncoded system without sacrificing the data transmission rate. The proposed system can be used as a coding scheme for reliable and high-speed integrated information services of mobile communication systems.
منابع مشابه
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(On Communications: CDMA, Code acquisition, MIMO, Modulation, OFDM, etc) 1. S.I. Park, K.Y. Lee, and I. Song, "Performance analysis of FHSS BFSK systems with nonlinear detectors in selective fading impulsive noise environment", Signal Process., vol. 45, no. 3, pp. 275-292, Sep. 1995. 2. Y. Ryu, I. Song, T. Chang, and K.S. Kim, "Adaptive code rate change for maximum throughput in DS-SSMA communi...
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