Performance of NLMS-based Parallel Interference Cancellation (PIC) For Up-Link CDMA Systems

被引：0
|
作者：
S. C. Chan
Y. J. Chu
机构：
[1] The University of Hong Kong,Department of Electrical and Electronic Engineering
来源：
Journal of Signal Processing Systems | 2015年 / 78卷
关键词：
Parallel interference cancellation; Normalized least mean square; Switch-mode noise-constrained; Performance analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Parallel interference cancellation (PIC) is a promising detection technique to suppress multiple access interference (MAI) for up-link direct-sequence CDMA (DS-CDMA) systems. Adaptive PICs are attractive due to its low implementation complexities and good performance. In this paper, we propose a general framework for analyzing the bit error rate (BER) and convergence performance of the normalized LMS (NLMS) based PIC. To further improve the convergence speed of the PIC system, a novel switch-mode noise-constrained NLMS (SNC-NLMS) algorithm for the adaptive multistage PIC (AMPIC) is also proposed. Simulation results show that the analytical results are reasonably accurate and the SNC-NLMS AMPIC outperforms the NLMS-based one, if the algorithm parameters are properly chosen.
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页码：155 / 162
页数：7
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