Fast Convergent LMS Adaptive Receiver for MC-CDMA Systems with Space-Time Block Coding

被引：13

作者：

Seo, Bangwon ^{[1
]}

Ahn, Woo-Geun ^{[2
]}

Jeong, Cheol ^{[2
]}

Kim, Hyung-Myung ^{[2
]}

机构：

[1] Elect & Telecommun Res Inst, Taejon 305606, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea

来源：

IEEE COMMUNICATIONS LETTERS | 2010年 / 14卷 / 08期

关键词：

MC-CDMA; space-time block coding; MMSE receiver; LMS adaptive receiver;

D O I：

10.1109/LCOMM.2010.08.100679

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

For multicarrier code-division multiple access (MC-CDMA) systems employing Alamouti's simple space-time block coding (STBC), a special relationship between two minimum mean-square error (MMSE) filter weight vectors is derived in which one filter is for detecting odd-indexed symbols and the other for even-indexed symbols. Using this relationship, a modified MSE cost function is presented and an improved least mean-square (LMS) adaptive receiver is proposed. Since the number of filter taps independently updated in the proposed adaptive receiver is only half that of the conventional LMS adaptive receiver, the proposed adaptive receiver has a faster convergence rate than the conventional LMS adaptive receiver while keeping the same steady-state MSE performance. This is verified through the simulation.

引用

页码：737 / 739

页数：3

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