Cooperative Transmission with Partial Channel Information in Multi-User MISO Wireless Systems

In this paper, we consider novel cooperative transmission from multiple base stations in multi-user wireless systems. The proposed scheme generates multiple beams using partial channel state information, enabling to achieve both beamforming and spatial multiplexing gain. With the use of twophase multi-user scheduling, it can also achieve multi-user diversity gain. The performance of the proposed scheme is analyzed and verified by computer simulation. Simulation results show the proposed scheme is quite effective as the spatial correlation and/or the number of users increase.This work was partly supported by the IT R&D program of MKE/IITA [2008-F-007-01, Wireless Communication Systems in 3 Dimensional Environment] and Seoul R&BD Program