Comparison of pilot symbol-assisted and differentially detected BPSK for DS-CDMA systems employing RAKE receivers in Rayleigh fading channels

被引：10

作者：

D'Amours, C ^{[1
]}

Moher, M

Yongacoglu, A

机构：

[1] Royal Mil Coll Canada, Dept Elect & Comp Engn, Kingston, ON K7K 7B4, Canada

[2] Commun Res Ctr, Ottawa, ON K2H 8S2, Canada

[3] Univ Ottawa, Dept Elect Engn, Ottawa, ON K1N 6N5, Canada

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 1998年 / 47卷 / 04期

关键词：

differential detection; diversity; DS-CDMA; pilot symbol-assisted detection; RAKE receiver; Rayleigh fading;

D O I：

10.1109/25.728515

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：

The capacity of a code-division multiple-access (CDMA) system is a function of the bit error rate (BER) performance of individual users. Therefore, it is important to optimize the individual links before proceeding to system level analysis. This is particularly true for operating in a fading channel where the performance without diversity reception is rather poor. This paper compares the BER performance of differential detection and pilot symbol-assisted coherent detection of a direct-sequence (DS) spread-spectrum (SS) signal on a frequency-selective Rayleigh fading channel using RAKE reception. Both equal gain and maximal ratio combining are considered, and the effect of convolutional coding with interleaving is studied. It is shown that in the particular cases considered in this paper, rate 1/8 convolutionally encoded pilot symbol-assisted BPSK performs better than coded differential detection, thus providing a higher system capacity.

引用

页码：1258 / 1267

页数：10

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