中国邮电高校学报(英文)

• Wireless • 上一篇    下一篇

Block diagonalization coordinated transmission with zero-forcing in MIMO broadcast

王亚琛1,马晓凤1,李晔2   

  1. 1. 山东省计算中心
    2. 山东省科学院
  • 收稿日期:2010-09-20 修回日期:2011-04-08 出版日期:2011-06-30 发布日期:2011-06-30
  • 通讯作者: 王亚琛 E-mail:wangych@keylab.net
  • 基金资助:

    This work was supported by the Shandong Province Natural Science Foundation (ZR2010FQ008).

Block diagonalization coordinated transmission with zero-forcing in MIMO broadcast

  1. 1. Shandong Computer Science Center, Jinan 250014, China 2. Shandong Provincial Key Laboratory of Computer Network,Jinan 250014, China
  • Received:2010-09-20 Revised:2011-04-08 Online:2011-06-30 Published:2011-06-30
  • Contact: Yachen WANG E-mail:wangych@keylab.net
  • Supported by:

    This work was supported by the Shandong Province Natural Science Foundation (ZR2010FQ008).

摘要:

This work has investigated coordinated multiple-input multiple-output (MIMO) transmission schemes in an interference-limited cellular downlink. It has proposed a novel block diagonalization (BD) coordinated transmission scheme, which combines with zero-forcing (ZF) criterion. In the scheme, the BD technique has advantages in suppressing multi-user interference while the ZF technique enables to mitigate interference among spatial data streams for a user. Based on the proposed coordinated scheme, an efficient power allocation is also put forward. The analyses show that the ergodic capacity of the proposed coordinated scheme is that of the MIMO channel with the maximum transmit power at each transmitter. Computer simulations demonstrate the effectiveness of the proposed coordinated scheme and its corresponding power allocation.

关键词:

BD, cellular systems, coordinated transmission, MIMO, power allocation, ZF

Abstract:

This work has investigated coordinated multiple-input multiple-output (MIMO) transmission schemes in an interference-limited cellular downlink. It has proposed a novel block diagonalization (BD) coordinated transmission scheme, which combines with zero-forcing (ZF) criterion. In the scheme, the BD technique has advantages in suppressing multi-user interference while the ZF technique enables to mitigate interference among spatial data streams for a user. Based on the proposed coordinated scheme, an efficient power allocation is also put forward. The analyses show that the ergodic capacity of the proposed coordinated scheme is that of the MIMO channel with the maximum transmit power at each transmitter. Computer simulations demonstrate the effectiveness of the proposed coordinated scheme and its corresponding power allocation.

Key words:

BD, cellular systems, coordinated transmission, MIMO, power allocation, ZF