Precise analysis of bit-error probability for asynchronous multicode DS-CDMA systems

被引：3
|
作者：
Lee, SJ [1 ]
Beaulieu, NC [1 ]
机构：
[1] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2V7, Canada
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2006年 / 54卷 / 04期
关键词：
bit-error probability (BEP); characteristic function (CF); code-division multiple access (CDMA); Gaussian approximation (GA); multicode; spread spectrum multiple access (SSMA);
D O I：
10.1109/TCOMM.2006.873072
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A precise bit-error probability (BEP) analysis method is derived for a multicode direct-sequence code-division multiple:access (DS-CDMA) system in an additive white Gaussian noise channel. The method is applicable to a multicode DS-CDMA system with an arbitrary number of multiple code sequences, and any selection of multiple code sequences. The precise method gives results that discriminate the effect of the selection of different multiple code sequences on the BEP, whereas Gaussian approximations (GAs) do not. Thus, the new method can be used to select the best multicode set for a given system, a task that cannot be achieved using GAS. A two-step analytical procedure enables deriving an explicit, compact form for the CF of the receiver decision statistic in a DS-CDMA system with an arbitrary number of multiple code sequences, and for any selection of multiple code sequences.
引用
收藏
页码：637 / 647
页数：11
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