We propose resource allocation models for wireless multi-cell orthogonal frequency division
multiple access (OFDMA) networks. The models maximize signal to interference noise ratio
(SINR) and capacity with SINR produced in an OFDMA network subject to user power and
subcarrier assignment constraints. We derive mixed integer programming formulations for
the case when maximizing SINR and piecewise linear approximations for the capacity
objective. A variable neighborhood search (VNS) metaheuristic is proposed to compute near …