Power Allocation for Coordinated Multi-Cell Systems With Imperfect Channel and Battery-Capacity-Limited Receivers

This letter studies the transmit power allocation in downlink coordinated multi-cell systems with the battery-capacity-limited receivers, where the battery level of receivers is considered. The power allocation is formulated as an optimization problem to maximize the minimum signal-to-interference noise ratio of users under the per-base station power constraints and the feasible maximum received data rate constraints determined by the receiver battery level. The optimal solutions are derived by the proposed monotonic optimization technique-based algorithm. The proposed algorithm can extend the battery lifetime of the receivers with lower battery level. Simulation results illustrate the performance of the proposed algorithm.