Sub-Carrier Allocation using Channel Prediction for OFDMA systems based on IEEE 802.16 Standard

Abstract

The problem of sub-carrier allocation in OFDMA systems has been the focus of recent research efforts. All papers to our knowledge consider the problem of allocating sub-carriers one frame ahead. In this paper, we propose an OFDMA scheme which utilizes future channel prediction to adaptively allocate sub-carriers to each user based on their predicted channel states several frames ahead. The results obtained show that this scheme guarantees the required rates in addition to a fair allocation of the available sub-carriers among users when compared to the traditional single frame case