Resource allocation for downlink OFDMA relay networks with imperfect CSI

Abstract

In this thesis, we propose a new adaptive resource allocation scheme for a downlink orthogonal frequency division multiple access (OFDMA) relay network with imperfect channel state information (CSI). In the proposed scheme, the power, subcarrier, and scheduled data rate are allocated to the BS, relays, and users to maximize the weighted sum of goodput under power constraints. Simulation results show that the proposed scheme achieves higher weighted sum of goodput than a conventional scheme.