Blind Equalization Using Coordinate Mapping for 4-PAM and 16-QAM Signals

作     者：RAO Wei 

作者机构：Nanchang Institute of Technology 

出 版 物：《Chinese Journal of Electronics》 (电子学报(英文))

年 卷 期：2014年第23卷第1期

页      面：124-128页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 081001[工学-通信与信息系统] 0701[理学-数学] 

基　　金：supported by the National Natural Science Foundation of China(No.61102022) the Natural Science Foundation of Jiangxi Educational Committee of China(No.GJJ12632) 

主　　题：Blind equalization Constant modulus algorithm Coordinate mapping 

摘      要：It is well known that the famous Constant modulus algorithm(CMA) presents a large steady-state Mean square error(MSE) for nonconstant modulus signals. In this paper a coordinate mapping approach for a4-PAM nonconstant modulus signal is described which can change the signal to an Offset QPSK(OQPSK) constant modulus signal. And a new algorithm based on this approach is proposed which is also suitable for a 16-QAM signal. For the 4-PAM and 16-QAM nonconstant modulus signals the proposed algorithm can achieve a zero steadystate MSE in a noiseless environment but CMA *** analysis and simulations results demonstrate the high performance of the proposed algorithm.