摘要
由于在时变水声信道中会产生随机相位失真,CMA算法的误码性能严重下降。在双模式盲均衡算法[1]的基础上,提出了一种适用于水声信道的新的盲均衡算法——NCMA算法。计算机仿真结果表明,在时变水声信道中,该算法性能优于双模式算法,能够达到对信号相位失真的恢复,并且收敛性能优于双模式算法。
A kind of New Constant Modulus Algorithm （NCMA） is presented to compensate the defects of the du- al-mode Constant Modulus Algorithm. And the NCMA is applied to the equalization of Underwater Acoustic Channel （UWAC）. It is more robust than dual-mode Constant Modulus Algorithm. Therefore, it is very suitable for underwater data transmission. The performance of NCMA is proven by computer simulation for the equalization of the UWAC.
出处
《电声技术》
2005年第9期4-6,共3页
Audio Engineering
基金
国家自然科学基金(10474080)
关键词
盲均衡
时变水声信道
双模式算法
blind equalization
time-variant channel
dual-mode Constant Modulus Algorithm
