Dynamic resource allocation in adaptive wireless multiuser multicarrier systems

Modern wireless multiuser multicarrier systems (MU-MC) incorporate Dynamic Resource Allocation (DRA), Adaptive Modulation and Coding (AMC) and Power Control (PC) to exploit multiuser diversity and achieve higher system throughput. In the literature, only a few proposed algorithms deal with the contiguous DRA problem (contiguous collection of resources). This paper formulates this high complexity problem, provides suitable throughput estimation metrics and a simple yet efficient solution. The proposed algorithm allocates in each step a contiguous collection of resources to the pending user resulting in the highest estimated throughput. Simulation results show that in this way, considerably improved performance can be achieved in terms of overall system throughput and spectral efficiency, compared to more conventional approaches.