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Download fileDistributed quasi-orthogonal space-time coding for two-way wireless relay networks
conference contribution
posted on 2011-01-13, 17:03 authored by F.M. Abdurahman, A.M. Elazreg, Jonathon ChambersAbstract—The contribution in this paper is to consider distributed
quasi orthogonal space-time block coding (D-QO-STBC)
for two-way (TW) wireless relay networks. In particular we
exploit a two time slot protocol and both open-loop and closedloop
D-QO-STBC with full cooperative diversity. In the openloop
approach constellation rotation is exploited to improve
performance, whereas two feedback terms are used in the closedloop
schemes. Our end-to-end bit error rate simulations show that
TW closed-loop D-QO-STBC and rotated open-loop D-QO-STBC
are approximately 8 dB and 7.5 dB better than the distributed
Alamouti TW approach at 10−4 bit error rate (BER), which
confirms the advantage of four relay schemes in relay networks
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