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Distributed space-time block coding for two-way wireless relaying networks: improved performance under imperfect synchronization


El Astal, M-TO and Salmon, BP and Olivier, JC, Distributed space-time block coding for two-way wireless relaying networks: improved performance under imperfect synchronization, Proceedings of the 2014 IEEE Wireless Communications and Networking Conference, 6-9 April 2014, Istanbul, Turkey, pp. 1176-1181. ISBN 978-1-4799-3083-8 (2014) [Refereed Conference Paper]

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Copyright 2014 IEEE

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DOI: doi:10.1109/WCNC.2014.6952316


Two-way Wireless Relaying Networks (TWRNs) have attracted interest recently due to the substantial bandwidth efficiency and performance they can achieve. So far, most research has assumed perfect timing synchronization within the network. Unfortunately, perfect synchronization is difficult (or impossible) to achieve as a timing misalignment between the received versions of the two-way transmitted signals will occur at both transmission phases. In this paper, an enhanced Parallel Interference Cancellation (PIC) detector for TWRNs employing a Space-time block code is proposed to mitigate efficiently the performance degradation caused by imperfect synchronization. In addition, a change in the transmission scheme of the TWRN is also introduced that will enable a symbol-wise decoding process at the receiving node. Unlike the previous PIC detector, numerical simulations show that the proposed detection scheme can achieve performance close to that of perfect synchronization even under severe imperfect synchronization conditions in just two iterations, while maintaining a low-level of computational complexity.

Item Details

Item Type:Refereed Conference Paper
Keywords:two-way relaying networks, D-STBC, amplify and forward relaying protocol, imperfect synchronization
Research Division:Engineering
Research Group:Communications engineering
Research Field:Signal processing
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:El Astal, M-TO (Mr Mohammed El Astal)
UTAS Author:Salmon, BP (Dr Brian Salmon)
UTAS Author:Olivier, JC (Professor JC Olivier)
ID Code:92409
Year Published:2014
Deposited By:Engineering
Deposited On:2014-06-17
Last Modified:2018-04-05

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