计算机工程与应用2011，Vol.47Issue(22)：80-82,3.DOI:10.3778/j.issn.1002-8331.2011.22.022
多用户MIMO系统中机会波束截断的信道反演
Opportunistic beamforming truncated channel inversion in multiuser MIMO systems
李玉梅 1张曙1
作者信息
- 1. 哈尔滨工程大学信息与通信工程学院,哈尔滨150001
- 折叠
摘要
Abstract
A novel truncated channel inversion method based on opportunistic beamforming for the MIMO broadcast channel is proposed that allows simultaneous transmission to multiple users.It can obtain the multiuser diversity gain and spatial multiplexing gain with limited feedback from each user.On the basis of channel truncating using opportunistic beamforming, the transmitting power allocation for different users is optimized to make the SINR of each user equal,with the result of improvement of Bit Error Rate(BER) performance.Numerical simulations show that 3~4 Db improvement of the system BER performance is achieved (for 30 users).Channel inversion is more simple than waterfilling power allocation, and it reduces the system complexity.关键词
机会波束形成(OBF)/信道反演/信干噪比/误比特率Key words
opportunistic beamforming/channel inversion/signal-to-interference-plus-noise ratio(SINR)/Bit Error Rate(BER)分类
信息技术与安全科学引用本文复制引用
李玉梅,张曙..多用户MIMO系统中机会波束截断的信道反演[J].计算机工程与应用,2011,47(22):80-82,3.
