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Efficient downlink cooperative multi-cell transmission for MU-MIMO system

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3 Author(s)
Zhijia Liu ; Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China ; Zesong Fei ; Jingming Kuang

Cooperative communication technology has been widely studied in recent years due to providing higher resource utilization and more reliable communication. In this work, we consider a downlink multi-user multi-input-multi-output (MU-MIMO) system with cooperative multi-cell transmission. Assuming that the channel state information are available at cell and user, we propose a simple user scheduling algorithm which can achieve the multi-user diversity gain and a power allocation scheme that subject to the total transmission power constrains so that it can more efficiently utilize the system resource and suppress the co-channel interference for the target user equipment. Theoretical analysis and Monte Carlo simulation results show that the transmission sum-rate of the proposed scheme is higher than the traditional single-cell or multi-cell transmission for single user. Additionally, performance of the edge user will also be improved when using the proposed scheme.

Published in:

Communications and Networking in China (CHINACOM), 2010 5th International ICST Conference on

Date of Conference:

25-27 Aug. 2010