A distributed power allocation algorithm with adaptive modulation for multi-cell OFDM systems

A heuristic distributed algorithm for allocating power among OFDM subchannels is proposed. Its performance and convergence in a multi-cell system with frequency reuse factor 4 are evaluated through simulation. With a realistic simulation which considers uniformly distributed mobiles, propagation loss and fading, it is shown that this simple distributed algorithm enhances the throughput of OFDM systems as compared to equal power allocation.