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| A Novel Method of Bussgang-type Blind Equalization in High-order QAM Systems |
| Ruan Xiu-kai① Jiang Xiao② Li Chang① |
①(College of Physics and Electronic Information Engineering, Wenzhou University, Wenzhou 325035, China)
②(College of Automation, Nanjing University of Posts and Telecommunications, Nanjing 210046, China) |
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Abstract A novel multi-modulus method of Bussgang-type blind equalization algorithm in higher-order Quadrature Amplitude Modulation (QAM) systems is proposed. To reduce the steady-state error effectively, an instantaneous switch-mode hybrid algorithm whose associative cost function is formulated by the novel cost function and the Constellation Matched Error (CME) is proposed, and a criterion of circular mode switching decision is designed. Finally, 256-QAM signal is used to simulate, all of these results verify the proposed blind equalization algorithm can achieve good performance in high-order QAM systems.
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Received: 29 December 2011
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Corresponding Authors:
Ruan Xiu-kai
E-mail: ruanxiukai@163.com
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2012, Vol. 34 
