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Focusing on the joint relay selection and power control problem with a viewto maximizing the sum-rate, we propose a novel sub-optimal algorithm thatiterates between relay selection and power control. The relay selection isperformed by maximizing the minimum signal-to-interference-plus-noise-ratio (asopposed to maximizing the sum-rate) and the power control is performed using asuccessive convex approximation. By comparing the proposed algorithm withexisting solutions via extensive simulations, we show that the proposedalgorithm results in significant sum-rate gains. Finally, we analyze thetwo-user multi-hop network and show that optimum transmit power of at least fortwo transmitting nodes can be found using binary power allocation.

Joint Relay Selection and Power Control that aims to Maximize Sum-Rate in Multi-Hop Networks