CAJ | 학술논문

针对常数模算法(CMA)收敛速度慢的缺点,将均衡器输入信号进行正交变换,实现正交变换域盲均衡.同时,引入均衡器输出星座匹配误差(CME)项,提出一种改进的正交变换域信道盲均衡算法(MTDCMA). 水声信道仿真结果表明:与常规常数模算法(CMA)及传统的基于正交变换的常数模盲均衡算法(TDCMA)相比,在同样的剩余码间干扰条件下,新算法具有更快的收敛速度.
침대상수모산법(CMA)수렴속도만적결점,장균형기수입신호진행정교변환,실현정교변환역맹균형.동시,인입균형기수출성좌필배오차(CME)항,제출일충개진적정교변환역신도맹균형산법(MTDCMA). 수성신도방진결과표명:여상규상수모산법(CMA)급전통적기우정교변환적상수모맹균형산법(TDCMA)상비,재동양적잉여마간간우조건하,신산법구유경쾌적수렴속도.
To deal with the disadvantage of slow convergence rate of the traditional constant modulus algorithm (CMA), blind channel equalization in orthogonal transform domain was performed by transforming the equalizer input signal orthogonally. A modified transform domain CMA (MTDCMA) was proposed by using constellation match error (CME) item of the equalizer output. Simulation with underwater acoustic channel shows that the proposed algorithm has faster convergence rate than those of CMA and traditional transform domain CMA (TDCMA) at the same residual inter-symbol interferences (ISIs).