Channel assignment in multi-antenna OFDM systems

This paper considers channel (subchannel, subcarrier) assignment problems that arise multi-carrier multi-antenna wireless systems. In particular, we propose channel-aware assignment of subcarriers to different antennas so that we improve performance while reducing the peak-to-average ratio in the antenna-specific power amplifiers. Moreover, simplifications to the proposed optimization models are proposed in order to reduce the computational complexity of the assignment problem. Simulation results demonstrate the applicability of the proposed techniques in frequency-selective channels.