DocumentCode :
148641
Title :
Distributed space-time block coding for two-way wireless relaying networks: Improved performance under imperfect synchronization
Author :
El Astal, M.-T.O. ; Salmon, B.P. ; Olivier, J.C.
Author_Institution :
Sch. of Eng., Univ. of Tasmania, Hobart, TAS, Australia
fYear :
2014
fDate :
6-9 April 2014
Firstpage :
1176
Lastpage :
1181
Abstract :
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.
Keywords :
computational complexity; decoding; numerical analysis; radio networks; relay networks (telecommunication); space-time block codes; computational complexity; distributed space-time block coding; numerical simulations; parallel interference cancellation detector; space-time block code; symbol-wise decoding process; two-way wireless relaying networks; Bit error rate; Detectors; Interference cancellation; Iterative decoding; Synchronization; Wireless communication; Amplify and Forward Relaying Protocol; D-STBC; Imperfect Synchronization; Two-Way Relaying Networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2014 IEEE
Conference_Location :
Istanbul
Type :
conf
DOI :
10.1109/WCNC.2014.6952316
Filename :
6952316
Link To Document :
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