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
收藏
页码：543 / 568
页数：26
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