Description: In this paper, we propose a distributed Alamouti
space-time code (DASTC) for two-way relay networks employing
a single amplify-and-forward (AF) relay. We first derive closedform
expressions for the approximated average sum-rate of
the proposed DASTC scheme. Our analysis is validated by
a comparison against the results of Monte-Carlo simulations.
Numerical results verify the effectiveness of our proposed scheme
over the conventional DASTC with one-way communication.
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