Convolutional spreading CDMA and comparison with the DS-CDMA with RAKE receiver

被引：13

作者：

Weerasinghe, Nalin S. ^{[1
]}

Hasimoto, Takeshi ^{[1
]}

机构：

[1] Univ Electrocommun, Hasimoto Lab, Dept Elect Commun, Tokyo 1828585, Japan

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2006年 / 54卷 / 11期

关键词：

code-division multiple access (CDMA); convolutional spreading (CS); cyclic (CP) prefix; multiuser interference (MUI); zero correlation zone (ZCZ) spreading sequences;

D O I：

10.1109/TCOMM.2006.884818

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：

For synchronous downlink direct-sequence code-division multiple access (DS-CDMA), we introduce a cyclic-prefix (CP)-based convolutional spreading CDMA (CS-CDMA/CP) scheme employing zero correlation zone (ZCZ) codes, which gives a. class of multiuser interference (MUI)-free CDMA schemes, including Suehiro's CDMA and block spreading (BS) CDMA as special cases. We show that CS-CDMA/CP employing appropriately selected binary and ternary ZCZ codes have good user capacity, peak-to-average power ratio (PAPR), and transmission power loss, compared with previously proposed BS-CDMA schemes. By simulation, we show the effect of PAPR to its bit-error rate (BER) performance when nonlinear amplifiers are used, and also compare its BER performance with the conventional DS-CDMA scheme employing a RAKE receiver.

引用

页码：1918 / 1922

页数：5

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