串行干扰消除检测器误码性能的近似分析

串行干扰消除检测器误码性能的近似分析

张东红1,2;廖桂生1

(1. 西安电子科技大学雷达信号处理重点实验室，陕西西安 710071;2. 安康学院应用数学系陕西安康 725000)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-10-20 发布日期:2007-10-25

Approximate analysis of the BER performance of the successive interference canceler

ZHANG Dong-hong1,2;LIAO Gui-sheng1

(1. Key Lab. of Radar Signal Processing, Xidian Univ., Xi′an 710071， China;2. Dept. of Applied Mathematics, Ankang Univ., Ankang 725000， China)

Received:1900-01-01 Revised:1900-01-01 Online:2007-10-20 Published:2007-10-25

摘要/Abstract

摘要： 基于符号判决事件构成样本空间的一个分割，利用全概率公式和符号判决事件的相互近似独立性，推导出具有幅度失配的串行干扰消除(SIC)检测器的误码率近似公式．该公式根据幅度失配产生的残余误差数据正负成对的结构特征，给出了误码率随幅度失配率单调递增的结论．仿真结果与理论预测一致，当幅度失配率不超过20％时，BER的变化并不明显．

关键词: 串行干扰消除, 近似分析, 幅度失配

Abstract: Based on the partition of sample space which is constituted by symbol decision events, the approximate Bit Error Rate(BER) formula with the miss matched amplitude of the successive interference canceler (SIC) is generated from the formula of total probability and independence of the symbol decision event.The effect of the miss matched amplitude on the BER performance is discussed by the application of the approximate BER formula and the character of the error residuals incurred by the miss matched amplitude.The result shows that the BER performance of SIC would be enhanced with the decrease of the miss matched amplitude rate.Simulation results agree well with those of theoretical prediction and the increase of BER is not distinct when the miss matched amplitude rate is less than 20％.

Key words: successive interference canceler, approximate analysis, miss matched amplitude

中图分类号:

TN914.4

张东红1;2;廖桂生1. 串行干扰消除检测器误码性能的近似分析
[J]. J4, 2007, 34(5): 753-757.

ZHANG Dong-hong1;2;LIAO Gui-sheng1. Approximate analysis of the BER performance of the successive interference canceler
[J]. J4, 2007, 34(5): 753-757.

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