Hot topic: physical-layer network coding
Proceedings of the 12th annual international conference on Mobile computing and networking
Performance Bounds for Bi-Directional Coded Cooperation Protocols
ICDCSW '07 Proceedings of the 27th International Conference on Distributed Computing Systems Workshops
Recovering Multiplexing Loss through Successive Relaying Using Repetition Coding
IEEE Transactions on Wireless Communications
Relay-based deployment concepts for wireless and mobile broadband radio
IEEE Communications Magazine
Wireless relays for broadband access [radio communications series]
IEEE Communications Magazine
Spectral efficient protocols for half-duplex fading relay channels
IEEE Journal on Selected Areas in Communications
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Relay-aided communication is considered one of the key techniques to achieve high throughput at low cost in future wireless systems. However, when transmitting signals via a relay, additional time slots, antennas, or frequency slots are required, which may erode the potential gain of relay-aided systems. In this article various approaches to creating relay-aided systems are reviewed. The advantages and disadvantages of various relaying schemes are compared in terms of their slot efficiency, error rate performance, and feasibility. Our detailed comparisons and the numerical results indicate that the specific family of network coding aided relaying protocols constitutes one of the most promising solutions. We conclude this article by listing a number of open problems.