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It has been shown that, with the instantaneous power constraint and joint power allocation, two-way relaying (TWR) outperforms one-way relaying (OWR) in terms of system throughput. However, the conclusion is not clear for the case with the average power constraint and the case with the instantaneous power constraint but separate power allocation. In this paper, we shall first investigate the optimality...
\boldmath In our proposed multi-relay-selection scheme with cyclic delay diversity (CDD), relays with spectral efficiency above a threshold are chosen to forward information, and a distinct cyclic shift is assigned to each selected relay. We derive an approximate expression of the end-to-end mutual information for the proposed scheme. We further analyze the outage probability and diversity-multiplexing...
In this paper, we investigate the performance of a symmetric two-user interference channel with a full-duplex relay (IFRC) from the perspective of diversity-multiplexing tradeoff (DMT). The sources and destinations are all assumed to be equipped with single antenna and the relay is equipped with multiple antennas. We first find a DMT upper bound of the channel by using a channel capacity upper bound...
In this paper, diversity-multiplexing tradeoff (DMT) of two-user interference channels with source cooperation is studied. A DMT upper bound is derived based on a capacity upper bound. The tightness of the upper bound is evaluated using an achievable DMT derived from a decode-and-forward (DF) based cooperation scheme. We show that in some channel scenarios, the upper bound can be achieved by the DF-based...
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