Uplink Performance of MIMO TDMA Cellular System with Hybrid Collaboration
MIMO时分蜂窝系统混合协作上行性能研究

Cooperation between Base Stations (BSs) and collaborative transmission between Mobile Terminals (MTs) are two promising techniques for the next generation wireless communications. This paper studies the per-cell achievable uplink sum-rate and minimum Eb/N0 of hybrid cooperative method and the interplay between the two collaborations in MIMO channels under an linear cellular model. A computational method and closed-form expression of minimum Eb/N0 for the achievable rate of DF combine with multi-cell processing in MIMO channels is derived. Moreover, the simulation results in MIMO fading channels are presented, and the results show that the macro-diversity gain from multi-cell decoding is independent with MTs collaboration but can be linear superposition, and hybrid collaboration significantly improve the system performance. However, high interference from adjacent cells weakens effect of MTs cooperation in hybrid collaboration system.