Blind equalization of underwater acoustic channel using a combined constant modulus algorithm

查看全文 作　　者：WANG Feng ZHAO Junwei LI Hongsheng (Institute of Acoustic Engineering, Northwestern Polytechnical University Xi’an 710072) 出　　处：《Chinese Journal of Acoustics》索引2003年第22卷第3期,共6页 基　　金：This work was supported by the National Defense Science & Technology Key Lab.(5144010201HK0302) 摘　　要：A kind of Combined Constant Modulus Algorithm (CCMA) is presented to compensate the defects of the Constant Modulus Algorithm (CMA) and the Sign Error CMA (SECMA). And CCMA is applied to the equalization of the underwater acoustic channel (UWAC). Based on the decision of the equalizer's output, its iteration process switches between CMA and SECMA automatically. It is more robust than SECMA, and more computationally efficient than CMA. Therefore, it is very suitable for the recovery of the underwater data transmission. The performance of CCMA is proven by computer simulation for the equalization of the UWAC. 关 键 词：盲均衡 CCMA 组合常系数算法 水下声信道 水下通信