Iterative multiuser interference reduction: Turbo CDMA

被引：118
|
作者：
Alexander, PD [1 ]
Reed, MC
Asenstorfer, JA
Schlegel, CB
机构：
[1] Univ S Australia, Inst Telecommun Res, The Levels, SA 5095, Australia
[2] Univ Utah, Dept Elect Engn, Salt Lake City, UT 84112 USA
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 1999年 / 47卷 / 07期
关键词：
code-division multiple access; iterative methods; random codes; Turbo codes;
D O I：
10.1109/26.774851
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：
We view the asynchronous random code-division multiple-access (CDMA) channel as a time-varying convolutional code. We study the case where the users encode their data, and, therefore, the single user transmitters and the CDMA channel appear as the concatenation of two coding systems. At the receiver we employ serial Turbo decoding strategies. Unlike conventional Turbo codes where both the inner and outer code may be selected, in our case, the inner code is due to the CDMA channel which we assume to be random. Nevertheless, the decoding system resembles-the decoder of a serial Turbo code and single-user performance is obtained even for numbers of users approaching the spreading code length.
引用
收藏
页码：1008 / 1014
页数：7
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