通信学报 ›› 2006, Vol. 27 ›› Issue (8): 31-34.doi: 1000-436X(2006)08-0031-04

• 学术论文 • 上一篇    下一篇

低轨卫星信道自适应模糊估计算法

卓永宁,朱立东,吴诗其   

  1. 电子科技大学 通信抗干扰技术国家级重点实验室,四川 成都 610054
  • 出版日期:2006-08-25 发布日期:2017-07-01

Adaptive fuzzy filter algorithm for LEO communication channel estimation

Yong-ning ZHUO,Li-dong ZHU,Shi-qi WU   

  1. National Key Laboratory of Communication, UESTC, Chengdu 610054, China
  • Online:2006-08-25 Published:2017-07-01

摘要:

针对功率控制,提出一种利用模糊规则的自适应LMS信道估计算法,通过将信道增益大小和前后变化值的大小划分为若干模糊集,建立将自适应算法和经验值相结合的自适应滤波器,使算法具有对低轨信道时变特性一定的适应性。仿真结果表明了算法的有效性。

关键词: 信道估计, 低轨卫星信道, 自适应, 模糊, 最小均方误差

Abstract:

A novel adaptive LMS filter algorithm based on fuzzy rules was proposed. Through building many fuzzy sets over the space of channel gained value and the increment value of channel gain, in addition to the setting of fuzzy rules, an adaptive algorithm incorporated with human experience was set up, which was adaptive to the time_varing character-istics of LEO satellite channel. The results of the simulation validate the algorithm.

Key words: channel estimation, LEO satellite channel, adaptive, fuzzy, LMS

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