Title :
Multi-User Interference Cancellation in Complementary Coded CDMA with Diversity Gain
Author :
Wei-Xiao Meng ; Si-Yue Sun ; Chen, Hsiao-hwa ; Jin-Qiang Li
Author_Institution :
Sch. of Electron. & Inf. Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
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.
Keywords :
code division multiple access; correlation methods; diversity reception; fading channels; interference suppression; mean square error methods; radiofrequency interference; CC-CDMA; M element sequence; MMSEC; code division multiple access; combining algorithms; complementary coded CDMA; correlation function; frequency diversity gain; frequency selective fading channel; minimum mean square error combining method; multiuser interference cancellation; multiuser interference resistance; per-carrier parallel interference cancellation; Bit error rate; Correlation; Diversity methods; Diversity reception; Fading; Interference; Multiaccess communication; CDMA; Complementary code; diversity gain; frequency selective fading; multi-user interference;
Journal_Title :
Wireless Communications Letters, IEEE
DOI :
10.1109/WCL.2013.030613.130016
