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A Simple Single-Carrier Space-Time Transmission Scheme for Asynchronous Cooperative Communications over Frequency-Selective Channels

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5 Author(s)
Kai Yan ; Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China. ; Sheng Ding ; YunZhou Qiu ; YingGuan Wang
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This paper presents a simple single-carrier (SC) distributed space-time block coded transmission scheme for asynchronous cooperative communications over frequency-selective channels. The cyclic prefix (CP) at the source node and relay nodes is used to combat inter-symbol interference from multi-path fading and the timing errors from the relay nodes. In this scheme, the relay nodes only implement very simple operations on their received signals to construct distributed space-time block code, and decoding, DFT and IDFT operations are only needed at the destination node. The low complexity SC zero-forcing frequency domain equalization (ZF-FDE) is applied at the destination node to recover the transmitted signals. The analysis and simulation results demonstrate that this simple SC scheme can achieve order-two spatial diversity gain for amplify-and-forward based cooperative communication over frequency-selective channels in the presence of asynchronization between relay nodes.

Published in:

Advanced Communication Technology, 2008. ICACT 2008. 10th International Conference on  (Volume:2 )

Date of Conference:

17-20 Feb. 2008