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An Interleaver-Based Asynchronous Cooperative Diversity Scheme for Wireless Relay Networks

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3 Author(s)
Zhaoxi Fang ; Dept. of Commun. Sci. & Eng., Fudan Univ., Shanghai ; Liangbin Li ; Wang, Zongxin

Distributed space time coding can achieve full spatial diversity in wireless relay networks. However, it requires accurate symbol-level synchronization and priori coordination between cooperative relay terminals, which is difficult to implement in distributed networks. In this paper, we propose a novel scheme based on interleaving to achieve cooperative diversity in both synchronous and asynchronous networks with little protocol overhead. A low complexity iterative detection algorithm is also proposed to combine signals from different relays at the receiver. The simulation results demonstrate the comparable performance to space-time codes based cooperative schemes which require perfect synchronization and coordination.

Published in:

Communications, 2008. ICC '08. IEEE International Conference on

Date of Conference:

19-23 May 2008