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基于DD-LLMS算法的盲自适应判决反馈均衡器 被引量：2

Blind Adaptive Decision Feedback Equalizers Based on DD-LLMS Algorithm
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摘要 本文把用于自适应线性滤波器的LLMS算法推广到盲判决反馈均衡器,并应用于短波信道的盲均衡。仿真结果表明这种DD-LLMS盲判决反馈均衡算法具有很好的稳定性、较快的收敛速度和较好的跟踪性能。 LLMS(Leaky Least Mean Square) algorithm used to adaptive linear filters is generalized to blind decision feedback equalizer, and applied to blindly equalize the CCIR-549-2 'poor path' channels. Simulation results show the DD-LLMS(Decision Directed-LLMS) blind decision feedback equalization algorithm has better stability, fast convergence rate and good tracking ability.
作者 刘锋
机构地区 解放军信息工程大学
出处 《电讯技术》 北大核心 2004年第6期150-153,共4页 Telecommunication Engineering
关键词 短波通信 DD—LLMS算法 盲判决反馈均衡器 收敛性能 High frequency communication DD-LLMS algorithm Blind decision feedback equalizer Convergence behavior
分类号 TN715 [电子电信—电路与系统]
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参考文献6

  • 1R Gitlin, H Meadors, S Weinstein. The tap leakage algorithm: an algorithm for the stable operation of a digitally implemented, fractionally spaced adaptive equalizer[J]. The Bell System Technical Journal,1982,68(8): 1817～1839.
  • 2K Mayyas, T Aboulnasr. Leaky LMS algorithm: MSE analysis for Gaussian data[J]. IEEE Transactions on Signal Processing, 1997,45(4):927-934.
  • 3L K Ting, C F N Cowan, Woods, R F, et.al. Tracking performance of leakage LMS for chirped signals[A]. Signal Processing Systems[C]. 2001 IEEE Workshop,2001.101-108.
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  • 6HF ionospheric channel simulators[R]. CCIR document 3/33, Report 549-2, 1986.

同被引文献12

  • 1潘立军,刘泽民.一种双模式盲均衡算法[J].北京邮电大学学报,2005,28(3):49-51. 被引量：10
  • 2朱行涛,赵翔,刘郁林.基于DD-LMS和MCMA的盲判决反馈均衡算法研究[J].微波学报,2007,23(2):67-70. 被引量：4
  • 3DINIZ P S R．自适应滤波算法与实现[M]．刘郁林，景晓军，谭刚兵等译．北京：电子工业出版社，2004．
  • 4Kil Nam oh, Yong ohk Chi. Modified constant modulus algorithm: blind equalization and carrier phase recovery algorithm. 1995 IEEE International Conference on Communications, Seattle, Gateway to Globalization, 1995 :498-502
  • 5Mayyas K, Abounlnasr T. Leaky LMS algorithm : MSE analysis for Gaussian data. IEEE Transactions on Signal Processing, 1997, 45 (4) :927-934
  • 6Mazo J E. Analysis of decision-directed equalizer convergence. Bell Syst Tech Journal , 1980, 59 (10) : 1857-1876
  • 7Belfore C, park J Jr. Decision feedback equalization.Proceedings of the IEEE, 1979, 67 (8) : 1143 - 1156
  • 8Tong L, Liu D. On blind decision feedback equalization.In Proc 26 th Asilomar Conference on Signal, System and Computers, Asilomar. CA, 1996. 305-309
  • 9GODARD D N. Self-recovering equalization and carrier tracking in two-dimensional data communication systems [ J ]. IEEE Transactions on Communications, 1980, 28 (11) :1867-1875.
  • 10OH K N, CHIN Y O. New blind equalization techniques based on constant modulus algorithm [ J ]. IEEE, 1995 : 865 -869.

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电讯技术
2004年 第6期

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