Transmission power allocation for broadcast/multicast services in multi-cell OFDM systems

In this paper, we investigate transmission power allocation for support of broadcast/multicast services (BMSs) in multi-cell OFDM systems. We consider a cooperative architecture for distribution of the BMS data where the copies of the same data are transmitted by multiple base stations (BSs) in a synchronized manner and then aggregated at the receiving users. Under this architecture, we develop a power allocation scheme that optimizes the transmission power of the multiple BSs on each sub-channel to maximize the total data rate. Simulation results reveal that the cooperative distribution system performs far better than the non-cooperative distribution system and the proposed power allocation schemes outperform the equal power allocation scheme significantly.