Low complexity RRA versus other RRA schemes in the OFDMA downlink: A comparison

This work studies what effects a mixed service scenario would give on system capacity and fairness of the downlink of an OFDMA system using different types of resource allocation algorithms. It also contrasts fairness to opportunistic resource allocation among user groups. The study evaluates and compares the performance of the different types of resource allocation schemes in the downlink of OFDMA systems based on user fairness, spectral efficiency and delay. It divides users into inner and outer groups according to channel conditions to study fairness versus opportunism. From the MATLAB-based simulation results, it is shown that the proposed RRA algorithm, facilitates a fairer distribution of system resources between users than the system capacity maximization technique.