New outer bounds to capacity regions of two-way channels
IEEE Transactions on Information Theory
Symbol error probabilities for general Cooperative links
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
Spectral efficient protocols for half-duplex fading relay channels
IEEE Journal on Selected Areas in Communications
WASA'13 Proceedings of the 8th international conference on Wireless Algorithms, Systems, and Applications
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Two-way amplify-and-forward relaying is considered in this paper. We propose adaptive power allocation (PA) algorithms to maximize the instantaneous achievable rate and minimize the system outage probability, respectively. Both single-and multi-relay systems are considered. It is shown that the proposed adaptive PA algorithms significantly outperform the uniform PA algorithms. Furthermore, exploiting multiple relays obtains higher diversity order and lower outage probability than using only one relay, at the price of a lower achievable information rate. The relay locations and relay selection are also taken into account to further improve the system performance.