A simple Alamouti space-time transmission scheme for asynchronous cooperative communications over frequency-selective channels

被引：0

作者：

Yan, Kai ^{[1
]}

Ding, Sheng ^{[1
]}

Qiu, YunZhou ^{[1
]}

Wang, YingGuan ^{[1
]}

Liu, HaiTao ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China

来源：

10TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY, VOLS I-III: INNOVATIONS TOWARD FUTURE NETWORKS AND SERVICES | 2008年

关键词：

asynchronous cooperative diversity; distributed space-time block coding; amplify-and-forward; OFDM; multi-path channels;

D O I：

暂无

中图分类号：

TP31 [计算机软件];

学科分类号：

081202 ; 0835 ;

摘要：

This paper proposes a simple orthogonal frequency -division multiplexing (OFDM) transmission scheme for asynchronous cooperative communications over frequency-selective fading channels. In this scheme, the relay nodes only implement very simple operations on their received signals, and no decoding, DFT or IDFT operation is needed. With our proposal, the received signals have the Alamouti code structure on each subcarrier, and thus, it has the fast symbol-wise ML decoding. The analysis and simulation results demonstrate that our simple scheme can achieve order-two spatial diversity gain for amplify-and-forward based cooperative communications over frequency-selective fading channels in the presence of asynchronization between relay nodes.

引用

页码：1569 / 1572

页数：4

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