Power Allocation Scheme Based on Genetic Algorithm for Multi-Base Station Cooperative Communication

Multi-base station cooperative communication can efficiently reduce the inter-cell interference, but its power allocation is a non-convex optimization problem. In this paper, we formulate the power allocation as a signal-to-interference-plus-noise-ratio (SINR) balancing problem and propose a scheme to solve the problem in its equivalent form. Based on genetic algorithm, the proposed power allocation scheme sets the path loss threshold to select the cooperative base stations for each user and considers different users' SINR fairness. Numerical results show that the proposed power allocation scheme will increase each user's average SINR about 17.75dB and 2.36dB in the same conditions of adopting equal power allocation of traditional cellular system and equal power allocation of multi-base cooperative communication system, respectively.