Abstract : This paper considers the downlink of a cellular orthogonal frequency division multi-access (OFDMA) system, in which multiple
base stations (BSs) are coordinated by a centralized resource allocation algorithm. We address the problem of maximizing the
weighted sum of the minimal user rates (WSMR) of coordinated cells subject to a total power constraint at each BS. In particular,
the solution of this problem corresponds to a resource allocation that guarantees similar rates to users in each cell. We
propose a coordinate ascent based iterative algorithm which alternatively updates the power allocation by solving a successive
set of convex optimization problems with geometric programming, as well as optimizes the subcarrier allocation by solving
a linear program for each cell. We illustrate the effectiveness of the algorithm by numerical experiments.