Radio Resource Management in a Coordinated Cellular Distributed Antenna System by Using Particle Swarm Optimization

In this paper, we consider a coordinated multi-point transmission (CoMP) scheme used in a cellular system where antenna ports are distributed throughout the cell, instead of using a single base station. Two schemes are considered; either ports can be switched on and off (Binary Power Management, BPM) or their transmission power can be adjusted (Continuous Power Management, CPM). The goal is to maximize the minimum signal to interference plus noise ratio (SINR) in the network for both schemes. The first problem is NP-hard and the second one is multi- modal. We propose to use particle swarm optimization (PSO) as a solver for both problems. It is demonstrated that the proposed PSO based algorithms can efficiently solve both problems. Furthermore, through simulations, it is shown that for the same total transmit power per port, CPM outperforms BPM.