Marginal utility-based power coordination in OFDMA downlink

In this paper, we address the intercell interference (ICI) in multi-cell networks by dynamically sharing the spectrum through collaboration between base stations. Throughput marginal utility (TMU) is utilized in resource allocation, and a theoretic framework based on TMU optimization is formulated. A distributed power allocation scheme is developed to exploit the average channel statistics of other cells in interference mitigation. The proposed algorithm is shown to substantially outperform conventional schemes.