Institute of Electrical & Electronic Engineers
In this paper, the authors study the SubChannel (SC) power allocation for Orthogonal Frequency Division Multiplexing (OFDM) multiple Access Points (APs) systems with non-coherent cooperative transmission. The objective is to maximize the total capacity under per-AP power constraints. It can be proved that the optimal solution can be obtained by the combination of an optimal SC partition search and the power allocation across SCs for each feasible partition. Existing work exhaustively searched the optimal SC partition and used Lagrange dual method to compute the power allocation across SCs.