Optimal channel assignment and power allocation for dual-hop multi-channel multi-user relaying

Abstract

We consider the problem of jointly optimizing channel pairing, channel-user assignment, and power allocation in a single-relay multiple-access system. The optimization objective is to maximize the weighted sum-rate under total and individual power constraints on the transmitters. By observing the special structure of a three-dimensional assignment problem derived from the original problem, we propose a polynomial-time algorithm based on continuity relaxation and dual minimization. The proposed method is shown to be optimal for all relaying strategies that give a concave rate function in terms of power constraints.

DOI: 10.1109/INFCOM.2011.5935298

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@inproceedings{Hajiaghayi2011OptimalCA, title={Optimal channel assignment and power allocation for dual-hop multi-channel multi-user relaying}, author={Mahdi Hajiaghayi and Min Dong and Ben Liang}, booktitle={INFOCOM}, year={2011} }