Multiuser MIMO Downlink Beamforming Design Based on Group Maximum SINR Filtering

作者：Yang Yu Han^*; Lin Shih Chun; Su Hsuan Jung

来源：IEEE Transactions on Signal Processing, 2011, 59(4): 1746-1758.

DOI：10.1109/TSP.2010.2099221

• Beamforming
• broadcast channel
• iterative algorithms
• linear precoding
• MIMO
• multiuser

In this paper, we aim to solve the multiuser multi-input multi-output (MIMO) downlink beamforming problem where one multi-antenna base station broadcasts data to many users. Each user is assigned multiple data streams and has multiple antennas at its receiver. Efficient solutions to the joint transmit-receive beamforming and power allocation problem based on iterative methods are proposed. We adopt the group maximum signal-to-interference-plus-noise-ratio (SINR) filter bank (GSINR-FB) as our beamformer which exploits receiver diversity through cooperation between the data streams of a user. The data streams for each user are subject to an average SINR constraint, which has many important applications in wireless communication systems and serves as a good metric to measure the quality of service (QoS). The GSINR-FB also optimizes the average SINR of its output. Based on the GSINR-FB beamformer, we find an SINR balancing structure for optimal power allocation which simplifies the complicated power allocation problem to a linear one. Simulation results verify the superiority of the proposed algorithms over previous works with approximately the same complexity.

• 出版日期2011-4
• 单位清华大学