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Near-optimum detection scheme with relay selection technique for asynchronous cooperative relay networks

Lookup NU author(s): Professor Jonathon Chambers


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A new near-optimum detection scheme for asynchronous wireless relay networks is proposed to cancel the interference component at the destination node caused by timing misalignment from the relay nodes. The detection complexity at the destination node as compared with a previous sub-optimum detection scheme is reduced. Closed-loop extended orthogonal space time block coding and outer convolutive coding are utilised to maximise end-to-end performance. A relay selection technique is also proposed in this study for two dual-antenna relay nodes to enhance the system performance by selecting the best links and the smallest time delay error among the relay nodes. Simulation results confirm that the proposed near-optimum detection scheme with relay selection is very effective at removing intersymbol interference at the destination node and achieving full cooperative diversity with unity data transmission rate between the relay nodes and the destination node.

Publication metadata

Author(s): Qaja W, Elazreg A, Chambers JA

Publication type: Article

Publication status: Published

Journal: IET Communications

Year: 2014

Volume: 8

Issue: 8

Pages: 1347-1354

Print publication date: 22/05/2014

Acceptance date: 17/01/2014

ISSN (print): 1751-8628

ISSN (electronic): 1751-8636

Publisher: The Institution of Engineering and Technology


DOI: 10.1049/iet-com.2013.0967


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