Turbo multiuser detection for differentially modulated CDMA

被引：1
|
作者：
Wu, Y [1 ]
Lim, TJ
机构：
[1] Ctr Wireless Commun, FIN-90014 Oulu, Finland
[2] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2004年 / 3卷 / 02期
关键词：
code division multiaccess (CDMA); convolutional codes; differential modulation; multiuser detection; noncoherent demodulation; turbo decoding;
D O I：
10.1109/TWC.2003.821218
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：
In this letter, we study differentially modulated, iteratively decoded CDMA. The iterative multiuser receiver proposed consists of an additional soft-input soft-output (SISO) differential decoder, when compared to turbo multiuser detectors for absolutely modulated systems., Algorithms for iterative decoding with and without phase. information at the receiver Eire developed. The resulting turbo, receivers with differential modulation outperform coherent receivers with absolute modulation at moderate to high signal to noise ratios due to the interleaver gain associated with recursive inner encoders in serially concatenated encoding structures.
引用
收藏
页码：348 / 352
页数：5
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