A modified hybrid dual-mode blind equalization algorithm for high-order QAM signals

Author

Li, Chisheng ; Xu, Shuliang ; Dong, Wenjuan ; Luo, Hanwan

Author_Institution

Dept. of Electron. Eng., Shanghai Jiaotong Univ., Shanghai, China

fYear

2009

fDate

13-15 Nov. 2009

Firstpage

1

Lastpage

4

Abstract

This paper presents a modified hybrid dual-mode blind equalization algorithm for high-order QAM signals. In the blind startup mode, the algorithm adds a constellation matching error (CME) to the cost function of extended constant modulus algorithm (ECMA) to improve the ECMA´s performance. Then switch to Directed Decision (DD) algorithm as the tracking mode to improve the restraining precision. Computer simulation results show that the algorithm has the faster convergence rate, lower steady-state error and can compensate the phase offset automatically.

Keywords

blind equalisers; quadrature amplitude modulation; blind startup mode; constellation matching error; cost function; directed decision algorithm; extended constant modulus algorithm; hybrid dual-mode blind equalization; phase offset; quadrature amplitude modulation; tracking mode; Bandwidth; Blind equalizers; Computer errors; Convergence; Cost function; Intersymbol interference; Quadrature amplitude modulation; Robust stability; Steady-state; Switches; Blind Equalization; CME; ECMA; Hybrid Dual-Mode; QAM;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications & Signal Processing, 2009. WCSP 2009. International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-4856-2

Electronic_ISBN

978-1-4244-5668-0

Type

conf

DOI

10.1109/WCSP.2009.5371562

Filename

5371562