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Lagrangian乘子法在多用户检测中的应用

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Indexed by:期刊论文

Date of Publication:2008-01-25

Journal:通信学报

Included Journals:PKU、ISTIC、CSCD、EI

Volume:29

Issue:1

Page Number:51-55

ISSN No.:1000-436X

Key Words:多用户检测;多址干扰;远近效应;码分多址

Abstract:将二进制二次规划问题连续化为一个带等式约束的二次规划问题,借助于求解等式约束的Lagrangian乘子法,推导出Lagrangian乘子与用户信息码及信道噪声之间的关系.同时,根据多用户检测问题的特殊性,还给出了估计Lagrangian乘子的方法,进而得到了一种新的多用户检测器.仿真结果表明,新算法的误码率与最佳多用户检测器大致相同,低于一般的次最优多用户检测器.

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