Chunk-based Resource Allocation in Multi-Cell OFDMA Systems with Fairness Guarantee

摘要

Resource allocation (RA) in multi-cell OFDMA systems is very important for maximizing system throughput. Although sub-carrier based RA is optimal in terms of system throughput, per-chunk based RA is a reasonable solution which simplifies allocation algorithms and minimizes required signaling. In this paper, we propose a fairness-aware chunk-based RA algorithm for the downlink transmission of multi-cell OFDMA system with fractional frequency reuse (FFR) adoption. Simulation results reveal that our proposed algorithm outperforms two reference algorithms in literature in terms of some system metrics such as average system spectral efficiency (SE), users' fairness and rates of cell-edge users.