Bayesian inference of multi-valued information symbol by a CDMA demodulator using multi-valued spreading code sequence

被引：0

作者：

Katayama, K ^{[1
]}

机构：

[1] Muroran Inst Technol, Fac Engn, Dept Comp Sci & Syst Engn, Muroran, Hokkaido 0508585, Japan

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2006年 / 361卷 / 02期

关键词：

CDMA demodulator; multi-valued information symbol; multi-valued spreading code sequence; Bayesian inference; replica method;

D O I：

10.1016/j.physa.2005.05.041

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We make an estimation of a maximizer of posterior marginals (MPM) as for a multi-valued information symbol by a code-division Multiple access (CDMA) demodulator using a multivalued spreading code sequence within a framework of a Bayesian inference. We calculate an estimation error of the CDMA demodulator and the information capacity of the CDMA channel by using a replica method. We clarify that because of redundancy for degree of the multi-values, the multi-valued information symbol and the multi-valued spreading code sequence are useful as for improvement of information transmission by comparing performance for various degrees of the multi-values. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：543 / 568

页数：26