Distributed subchannel and timeslot allocation in multi-relay cellular OFDMA system

摘要

In this paper, we present a distributed resource allocation algorithm in cellular Orthogonal Frequency Division Multiple Access (OFDMA) system with multiple relays. Each frame is composed of two time-division sub-frames and each subframe involves multiple subchannels including several continuous subcarriers. The subchannels are divided into several blocks that are allocated to different relays adaptively. The simulation results show that the proposed scheme can not only decrease the amount of required feedback information and algorithm complexity, but also achieve a very low outage probability for a given the minimum data rate requirement.