期刊文献+

变步长常数模盲均衡算法研究 被引量:4

Constant Modulus Algorithms Using Variable Step-size
原文传递
导出
摘要 为了进一步提高CMA盲均衡算法的收敛速度和均衡性能,研究了一种变步长常数模盲均衡算法。常数模盲均衡算法中,步长参数直接影响算法的收敛速度和均衡性能,合理的选择步长参数不仅能够避免算法发散或收敛过慢,并且适时调整步长参数可以避免算法陷入局部极小值。高阶均方误差直接反映算法的收敛状态,所以可以利用高阶均方误差作为步长参数的调整因子。计算机仿真表明以高阶均方误差作为步长参数调整因子使常数模盲均衡算法具有了更快的收敛速度和更好的均衡效果。 Blind equalization by CMA using variable step-size based on higher-order squared error is proposed in this paper. The adjustment of step-size by higher-order squared error in CMA can improve convergence rate and equalization performance. And higher-order squared error directly reflects the state of convergence, so it can be used to reasonably adjust step-size. At the same time, CMA using variable step-size can avoid the coefficients converging to the local minimum point to a certain extent. Simulation resul...
出处 《通信技术》 2008年第5期47-48,58,共3页 Communications Technology
基金 大连民族学院人才引进科研启动基金资助项目(20066105)。
关键词 盲均衡 变步长 高阶均方误差 常数模 blind equalization variable step-size higher-order squared error constant modulus
  • 相关文献

参考文献5

  • 1[1]Daheer O,Masry E.Convergence analysis of the constant modulus algorithm[J].IEEE Transactions on Information Theory,2003,49(06):1447-1464.
  • 2[2]Li Xi-Lin,Zhang Xian-Da.A family of generalized constant modulus algorithms for blind equalization[J].IEEE Transactions on Cummunications,2006,51(11):1913-1917.
  • 3[3]Pascal Bianchi,Philippe Loubaton.On the blind equalization of continuous phase modulated signals using the constant modulus criterion[J].IEEE Transactions on Signal Process,2007,55(03):1047-1061.
  • 4[4]Liu Z S.On-line parameter identification algorithms based on householder transformation[J].IEEE Trans.on Signal Processing,1993,41(09):2863-2871.
  • 5[5]Walach E,Widrow B.The least mean fourth (LMF) adaptive algorithm and its family[J].IEEE Trans.on information Theory,1984,30(02):275-283.

同被引文献20

  • 1郭业才,韩迎鸽,饶伟,张艳萍.基于对数正态误差函数的变步长盲均衡新算法[J].系统仿真学报,2007,19(6):1224-1226. 被引量:11
  • 2姚春峰,陈健,阔永红.几种盲均衡算法的原理与仿真试验研究[J].电子科技,2007,20(5):30-32. 被引量:8
  • 3丁欢,王永刚.通信中的盲均衡技术[J].现代电子技术,2007,30(11):84-87. 被引量:9
  • 4Fijalkow I, Touzni A, Treichler J R. Fractionally Spaced Equalization Using CMA:Robustness to Channel Noise and Lack of Disparity[J]. Signal Processing, Jan. 1997,45(01): 56-66.
  • 5Yang J, Werner J J, Dumont A G. The Multimodulus Blind Equalization and Its Generalized Algorithms[J]. IEEE Journal on Selected Areas in Communication, 2002, 20(05) :997-1015.
  • 6Stojanovic M,Catipovic J A,Proakis J G. Phase-coherent digital communications for underwater acoustic channels[ J ]. IEEE Jour- nal of Oceanic Engineering, 1994,19 ( 1 ) : 100 - 111.
  • 7Godard D. Self-recovering equalization and carrier tracking in two dimensional data communication systems [ J ]. IEEE Transactions on Communications, 1980,28 ( 11 ) : 1867 - 1875.
  • 8Johnson Jr C R, Schniter P. Blind equalization using the constant modulus criterion:a review[ J ]. Proceedings of the IEEE, 1998, 86(10) :1927 - 1950.
  • 9SimonHaykin(西蒙赫金).自适应滤波器原理(第四版)[M].北京:电子工业出版社,2010.
  • 10Junyu Mai, Ali H. Sayed. A feedback approach to the steady-state performance of fractionally spaced blind adaptive equalizers[ J]. IEEE Transactions on Signal Processing.2000.48 (1) :80- 91.

引证文献4

二级引证文献14

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部