›› 2015, Vol. 28 ›› Issue (7): 84-.

• 论文 • 上一篇    下一篇

卫星信道MMSE和LS均衡算法性能比较

李轩,张瑜,关庆阳   

  1. (沈阳航空航天大学 电子信息工程学院,辽宁 沈阳 110136)
  • 出版日期:2015-07-15 发布日期:2015-07-13
  • 作者简介:李轩(1967—),男,博士,副教授,硕士生导师。研究方向:通信工程、电磁兼容。E-mail:lx_ggoodd@sau.edu.cn。张瑜(1988—),女,硕士研究生。研究方向:卫星通信技术。

Performance Comparison Between MMSE and LS Equalization Algorithms for Satellite Channels

LI Xuan,ZHANG Yu,GUAN Qingyang   

  1. (School of Electronic and Information Engineering,Shenyang Aerospace University,Shenyang 110136,China)
  • Online:2015-07-15 Published:2015-07-13

摘要:

针对卫星信道采用OFDM系统模型,结合实际情况,在信道中加入多径干扰和多普勒频偏,为更好地消除子载波间干扰和码间干扰,在解调之后采用均衡算法。文中选用MMSE和LS均衡算法进行研究,得出两种算法均衡性能的差异,并指出了均衡算法的研究方向。

关键词: 信道均衡, 卫星通信, OFDM

Abstract:

OFDM system model is applied to the satellite channel.Considered the actual situation,multipath interference and Doppler shift are added to the channel.In order to eliminate the inter-carrier interference (ICI) and the inter-symbol interference (ISI) better,the equalization algorithm is used after demodulation.The MMSE and LS equalization algorithm are studied in detail.The difference in performance of the two algorithms is concluded and the direction of the equalization algorithm is pointed out.

Key words: channel equalization;satellite communication;OFDM

中图分类号: 

  • TP271