This paper focuses on the competitively optimal power-control, signal-shaping and interference mitigation for wireless mesh networks composed by multiple-antenna noncooperative transmit terminals and a base station affected by spatially colored multi-access interference (MAI). The target is the competitive maximization of the information throughput of the uplink of each link active over the network. For this purpose, the MAI-impaired network is modeled as a noncooperative strategic game.