MMSE-Based Block Implementation of Constant Modulus Algorithm
This paper introduces a new parallel scheme of Godards constant modulus algorithm which can be easily implemented by hardware. With the criterion of Godards constant modulus, stochastic gradient decency and block minimum mean square error, it realizes a parallel equalizer by adaptively adjusting the tap-weight vector. From numeric analysis and simulation, it is manifested that our scheme for quadrature phase-shift keying (QPSK) communication systems can achieve fast parallel equalization at the cost of less than 3 dB BER performance loss than the theoretic BER performance under low Eb/N0 (Eb/N0 is less than 10 dB) when the channel condition is rather severe. Therefore, it can be used to overcome the speed limitation of hardware for designing and implementing parallel blind equalizers especially in digital modems with high data rate.
Jianrong Bao Yafeng Zhan Jianhua Lu
Department of Electronic Engineering, Tsinghua University, Beijing, P. R. C.
国际会议
上海
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）