Title :
A New Multi-Modulus Blind Equalization Algorithm for QAM Signals
Author :
Li, Chisheng ; Dong, Wenjuan ; Wan, Guojin ; Chen, Limin
Author_Institution :
Dept. of Electron. & Inf. Eng., Nanchang Univ., Nanchang, China
Abstract :
A New Multi-Modulus Blind Equalization Algorithm for QAM Signals is proposed in this paper. The algorithm uses Multi-Modulus technique in dual-mode based on Square Divided Regions (MMSDR) for initial convergence during blind startup. After the eye diagram is open, the Directed Decision (DD) Algorithm is used which helps to accelerate convergence rate and reduce the residual error. The switching process between MMSDR and DD is realized by a decision circle ring. Simulation results show that the proposed algorithm has a faster convergence rate and lower residual error than others.
Keywords :
blind equalisers; decision feedback equalisers; quadrature amplitude modulation; QAM signal; convergence rate; decision feedback equalizer; directed decision algorithm; eye diagram; multimodulus blind equalization algorithm; square divided region; Bandwidth; Bit error rate; Blind equalizers; Convergence; Decision feedback equalizers; Feedforward systems; Filters; Quadrature amplitude modulation; Signal analysis; Wireless communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5302449
