计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (29): 126-128.

• 网络、通信与安全 • 上一篇    下一篇

MIMO信道平均容量优化算法的研究

贺中堂,徐 冉,许苏晓   

  1. 江苏徐州空军学院,江苏 徐州 221000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-10-11 发布日期:2007-10-11
  • 通讯作者: 贺中堂

On capacity optimization for correlated MIMO channels

HE Zhong-tang,XU Ran,XU Su-xiao   

  1. Xuzhou Airforce College,Xuzhou,Jiangsu 221000,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-10-11 Published:2007-10-11
  • Contact: HE Zhong-tang

摘要: 该文研究MIMO系统收发天线间存在空间相关衰落时信道平均容量的优化算法,利用牛顿迭代法,对发送子空间各特征向量的分配功率进行了优化。仿真结果表明,在各种SNR下,其平均容量接近Jensen’s上界;得出信道相关性对平均容量的影响取决于系统信噪比的结论。

关键词: MIMO, 平均信道容量, 注水算法, 波束成形

Abstract: This paper studies the capacity of a MIMO system with a correlated fading channel for the two-side antennas.An optimization program using Newton’s method is developed to analyze the interactions among transmit and receive antennas,Simulation shows that the optimization program can give a result which is very close to the Jensen’s up bound and reveal the effect of correlation on capacity depending on SNR.

Key words: MIMO, ergodic channel capacity, water filling, beamforming