A successive convex approximation algorithm for weighted sum-rate maximization in downlink OFDMA networks

We consider a downlink OFDMA cellular network wherein groups of access points are coordinated and we address the problem of jointly selecting the set of co-channel users and the power allocation across tones in order to maximize the weighted system sum-rate subject to per-base-station power constraints. To solve this problem, we propose a successive convex approximation for low-complexity (SCALE) algorithm which extends a previous optimization procedure developed for ADSL. Numerical examples are provided to assess its performance.