Abstract
A low complexity Quality-of-Service (QoS)-aware sub-carrier allocation/user-selection technique for the downlink of Multiple-Input Single-Output Orthogonal Frequency Division Multiple-Access (MISO-OFDMA) system is proposed. The algorithm allows simultaneous transmission to multiple users on the same sub-carrier through zero-forcing beamforming (ZFBF). The proposed algorithm enhances QoS by preserving minimum rate for each user while providing high bandwidth data services. Simulation results reveals that our algorithm outperforms other reference algorithms in terms of average sum-rate per sub-carrier and QoS, while lower complexity is attained by the proposed algorithm in terms of execution time needed compared to reference algorithms.