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Distributed cyclic delay diversity with decision-feedback differential detection

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4 Author(s)
Jing Xu ; Dept. of Inf. & Commun. Eng., Xi''an Jiaotong Univ., Xi''an, China ; Shihua Zhu ; Zhenzhen Gao ; Valkama, M.

In this paper, a non-regenerative differential distributed space-frequency coding is developed for broadband cooperative communication networks with arbitrary number of relays. Based on an elaborated symbol-to-subcarrier allocation method, the differential encoding across subcarriers is performed at the source. In the proposed scheme, a simple circular shift of the received signal is implemented at each relay, and a low-complexity linear prediction-based adaptive decision-feedback differential detection (DF-DD) is employed at the destination. This detection algorithm even can start without a priori knowledge of the channel statistics. Theoretical analysis and simulation results confirm that the proposed scheme exploits both spatial and frequency diversity.

Published in:

Broadband Network and Multimedia Technology (IC-BNMT), 2010 3rd IEEE International Conference on

Date of Conference:

26-28 Oct. 2010