A resource allocation strategy for SDMA/OFDMA systems

Optimum Resource Allocation (RA) in Space Division Multiple Access (SDMA)/Orthogonal Frequency Division Multiple Access (OFDMA) systems is a prohibitively complex task for which efficient sub-optimal strategies are preferable. In this work, a new Space-Frequency/Time Resource Allocation (S-FT RA) is proposed, which divides RA in two tasks: the SDMA grouping, for which a new SDMA grouping algorithm is proposed, and the joint frequency/time RA, which is solved using Munkres' algorithm. It is shown that the proposed strategy is flexible and that it achieves a considerable fraction of the maximum achievable average system capacity.