Adaptive algorithm and parameter optimization for distributed beamforming in OFDM systems

Abstract

In this paper, we propose and analyse an adaptive algorithm for distributed beamforming in OFDM systems over time and frequency selective channel conditions. We discuss how the key parameters related to convergence speed of the algorithm can be optimized to suit networks with different degrees of transmitter mobility. We show that the proposed adaptive algorithm is beneficial when used in mobile conditions; this is demonstrated by simulation studies using a realistic geometry-based channel model with various transmitter mobilities.