Antenna selected space-time block code coordinated multi-cell transmission

Coordinated multipoint (CoMP) transmission is being considered in next-generation cellular systems to improve cell-edge throughput. In this paper, we consider open-loop CoMP with L base stations (BSs) where they cooperatively serve a cell-edge user. We first propose antenna selected space-time block code (STBC) to exploit diversity gain for serving the cell-edge user and also support the scenario that cell-edge and cell-center users coexist. To further exploit distinct path losses of cell-edge and cell-center users, we propose pre-cancellation scheme to remove the in-cell interference. Next, we formulate the power allocation problem that maximizes per-cell throughput with minimum throughput constraint. Results show that the proposed antenna selected STBC CoMP has benefit in BER performance with limited feedback constraint, compared to coherent CoMP, and it achieves higher per-cell throughput.