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In this paper, we present a low complexity maximum likelihood (ML) detection based on the sphere decoder (SD) for distributed time-reversal space-time block code (D-TR-STBC) with frequency selective fading links. Unlike direct transmission, the relay-assisted transmission results in higher number of taps for the resultant end-end channel. The complexity of Viterbi algorithm (VA) grows exponentially...
This paper investigates the coding gain achieved between the best relay and the relay subset selection in a two-hop wireless network with relay-assisted transmission. Both best relay and relay subset selection achieves the maximum diversity, but the later becomes a better alternative in certain scenarios. First in low mobility scenarios, when the channel fading remains static for longer duration and...
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