A Partial Zero-forcing Precoding Method for Downlink Multi-user MIMO Channel
In this paper, we introduce a preprocessing method based on interference figure (PBIF) for downlink channel of multi-users visual MIMO system. By using singular value decomposition (SVD), the method decomposes multiuser downlink channel into multiple parallel single-user downlink channels and each channel have specific multi-user interference based on predesigned interference figure. We propose a special kind of interference figure and provide the corresponding method for parameters optimization. Simulation results show that it can obviously promote the outage capacity when outage probability (Pout) is small. When Pout is 0.1, compared with block diagonalization method, the outage capacity has been improved 47％ by PBIF-Rp, and 106％ by PBIF-Op.
communication MIMO SVD multi-user interference precoding
Bingxin Yao Yubo Song
College of Electronics and Information Engineering Nanjing University of Technology Nanjing, China School of Information Science and Engineering Southeast University Nanjing, China
国际会议
南京
英文
816-819
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）