On the convexity of the LCCM cost function for DS-CDMA blind multiuser detection

被引：10
|
作者：
de Villiers, JP [1 ]
Linde, LP [1 ]
机构：
[1] Univ Pretoria, ZA-0002 Pretoria, South Africa
来源：
IEEE COMMUNICATIONS LETTERS | 2004年 / 8卷 / 06期
基金：
新加坡国家研究基金会;
关键词：
blind multiuser detection; convexity; cost function; DS-CDMA; linearly constrained constant modulus (LCCM); linearly constrained constant modulus algorithm (LCCMA);
D O I：
10.1109/LCOMM.2004.831325
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
The linearly constrained constant modulus algorithm (LCCMA) applied to blind DS-CDMA multiuser detection was widely considered in the last few years. In some papers, global convergence of the linearly constrained constant modulus (LCCM) algorithm was incorrectly claimed, after which corrections were published by other authors (see the Introduction section for references). In this letter, analysis of the LCCM criterion is extended to prove convexity of the LCCM cost function between any point and the global minimum, subject to certain conditions, by using the definition of a continuous convex function.
引用
收藏
页码：351 / 353
页数：3
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