摘要
结合信号星座图特点,对常数模算法的代价函数进行修正,提出了基于坐标变换的常数模盲均衡新算法.该算法通过坐标变换将发射信号的模值转换成零,从而克服了常数模算法在对非常模信号进行均衡时,输出误差无法收敛至零的缺点;并且该算法可以在未知发射信号调制类型的情况下完成均衡.理论分析和仿真结果证明了新算法的优良性能.
by studying the characteristics of the constellations for different transmitted signals,we modify the cost function of Constant Modulus Algorithm（CMA） and propose a new CMA based on coordinate transformation.The proposed algorithm changes the modulus of transmitted signals to zero,which can lead the output error to converge to zero even for nonconstant modulus signals.Furthermore it can achieve blind equalization without any priori statistical information of transmitted signals.Theoretic analysis and computer simulation results demonstrate that the proposed algorithm offers high performance.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2011年第1期7-12,共6页
Acta Electronica Sinica
基金
江西省教育厅自然科学基金(No.GJJ09609)
全国博士学位论文作者专项资金(No.200753)
关键词
常数模算法
坐标变换
盲均衡
constant modulus algorithm
coordinate transformation
blind equalization
