Blind Detection in CDMA Systems Based Nonparametric Likelihood Ratio Criterion

WEI Qi; ZHANG Xiang-yang; SU Xiao-yu

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Blind Detection in CDMA Systems Based Nonparametric Likelihood Ratio Criterion

更新时间：2026-07-10

- Blind Detection in CDMA Systems Based Nonparametric Likelihood Ratio Criterion
- Vol. 14, Issue 4, Pages: 50-53(2009)
- 作者机构：
  
  哈尔滨理工大学电气与电子工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN929.533
- Published：2009
- 稿件说明：
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WEI Qi, ZHANG Xiang-yang, SU Xiao-yu. Blind Detection in CDMA Systems Based Nonparametric Likelihood Ratio Criterion[J]. 2009, 14(4): 50-53.
DOI：

WEI Qi, ZHANG Xiang-yang, SU Xiao-yu. Blind Detection in CDMA Systems Based Nonparametric Likelihood Ratio Criterion[J]. 2009, 14(4): 50-53. DOI：

摘要

提出了一种应用于DS-CDMA通信系统中的干扰抑制盲算法

该算法在经典ICA算法中增加了无参似然率(nonparametric likelihood ratio

NLR)准则

使分离出的数据的误码率减小

系统性能明显提高.仿真结果表明这种新算法与另外两种未采用NLR准则的算法相比具有更好的抑制干扰的能力

降低了系统对信噪比的要求.

Abstract

This paper presents a blind interference suppression algorithm used in DS-CDMA system.The algorithm is a nonparametric likelihood ratio(NLR) criterion added to the classic ICA algorithm to decrease the data error rate and improve system performance markedly.The simulation results show that this new algorithm provides better interference suppression and reduce the requirements of the SNR than the other two methods which not use NLR criterion.

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