›› 2011, Vol. 24 ›› Issue (5): 4-.

• 论文 • 上一篇    下一篇

基于OFDM系统的时-频域波束形成算法

韩双林,陈建春   

  1. (西安电子科技大学 电子工程学院,陕西 西安 710071)
  • 出版日期:2011-05-15 发布日期:2011-05-19
  • 作者简介:韩双林(1985-),男,硕士研究生。研究方向:智能天线在OFDM系统中的应用。

Time-Frequency Beam Forming Based on the OFDM System

 HAN Shuang-Lin, CHEN Jian-Chun   

  1. (School of Electronic Engineering,Xidian University,Xi'an 710071,China)
  • Online:2011-05-15 Published:2011-05-19

摘要:

智能天线与OFDM结合可以提高系统性能。文中首先介绍了OFDM-智能天线系统的两种算法:时域波束形成算法和频域波束形成算法。并在此基础上提出了一种新的时-频域波束形成算法,最后将该算法与前两种算法进行了仿真比较。仿真结果表明,文中提出的算法在多径丰富的环境中性能优于时域波束形成算法,与频域波束形成算法相比,该算法结构大为简化、实现简单。

关键词: 智能天线, 正交频分复用, 波束形成, 快速傅里叶变换

Abstract:

The combination of smart antennas and OFDM can improve the system performance.The paper first introduces two beam forming algorithms in OFDM-Smart Antennas system: time beam forming and frequency beam forming,then proposes  the time-frequency beam forming algorithm,and finally simulates and compares the three algorithms.The result shows that the time-frequency beam forming algorithm has better performance than the time beam forming in the multiple-path environment.Compared with the frequency beam forming algorithm,the time-frequency beam forming algorithm has a greatly simplified structure and is easy to implement.

Key words: smart antennas;OFDM;beam forming;FFT

中图分类号: 

  • TN821+.91