中国邮电高校学报(英文) ›› 2010, Vol. 17 ›› Issue (2): 8-13.doi: 10.1016/S1005-8885(09)60438-6

• Wireless • 上一篇    下一篇

On the bounds of frequency-selective channel capacity with doubly correlated geometrical MIMO channel model

李永华1,吕铁军2,吴晓非2,张琳2   

  1. 1. 北京邮电大学信息与通信工程学院
    2.
  • 收稿日期:2009-07-03 修回日期:2009-09-28 出版日期:2010-04-30 发布日期:2010-06-01
  • 通讯作者: 李永华 E-mail:caaclyh@yahoo.com.cn, caaclyh@163.com
  • 基金资助:

    国家“973计划”项目(2009CB320401),新世纪人才项目(NCET-06-0091);国家级.国家“863计划”项目

On the bounds of frequency-selective channel capacity with doubly correlated geometrical MIMO channel model

  • Received:2009-07-03 Revised:2009-09-28 Online:2010-04-30 Published:2010-06-01

摘要:

As is well known, the MIMO technology plays an important role for the link transmissions. This paper considers the general case for the ergodic capacity in doubly correlated frequency-selective MIMO channel. In the study, the geometrical MIMO channel model is presented. Based on the formula of MIMO ergodic capacity, the capacity limits are investigated with arbitrary finite number of antennas in the frequency-selective MIMO channel. It first derives the exact expressions for the upper bound and lower bound in doubly correlated MIMO channel. The results for the single-ended correlation and independent identically distributed (i.i.d.) MIMO channel are also obtained as special cases. Then the simple expressions of the capacity bounds are attained at high SNR. Finally, some results are provided by Monte Carlo simulations to verify the tightness of the derived bounds.

关键词:

MIMO, correlation, capacity, bounds

Abstract:

As is well known, the MIMO technology plays an important role for the link transmissions. This paper considers the general case for the ergodic capacity in doubly correlated frequency-selective MIMO channel. In the study, the geometrical MIMO channel model is presented. Based on the formula of MIMO ergodic capacity, the capacity limits are investigated with arbitrary finite number of antennas in the frequency-selective MIMO channel. It first derives the exact expressions for the upper bound and lower bound in doubly correlated MIMO channel. The results for the single-ended correlation and independent identically distributed (i.i.d.) MIMO channel are also obtained as special cases. Then the simple expressions of the capacity bounds are attained at high SNR. Finally, some results are provided by Monte Carlo simulations to verify the tightness of the derived bounds.

Key words:

MIMO, correlation, capacity, bounds