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Multi-User Interference Cancellation in Complementary Coded CDMA with Diversity Gain

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4 Author(s)
Wei-Xiao Meng ; School of Electronics and Information Engineering, Harbin Institute of Technology, China ; Si-Yue Sun ; Hsiao-Hwa Chen ; Jin-Qiang Li

This letter analyzes the performance of complementary coded code division multiple access (CC-CDMA) systems in frequency selective fading channels. Based on the evaluation of various combining algorithms for the correlation functions of M element sequences of a CC, a per-carrier parallel interference cancellation scheme based on minimum mean square error combining (MMSEC) is proposed for CC-CDMA to achieve a frequency diversity gain and multi-user interference resistance. Both analytical and simulation results verify the superiority of the proposed scheme. It is shown that combining algorithms and correlation properties of element sequences have a significant impact on the performance of CC-CDMA systems in frequency selective fading channels.

Published in:

IEEE Wireless Communications Letters  (Volume:2 ,  Issue: 3 )