A novel blind equalization algorithm for underwater acoustic communications

One of the main obstacles on reliable high-speed underwater acoustic communications through severely band-limited underwater acoustic channels is the intersymbol interference (ISI) caused by the multipath effect. Channel equalization technique is an effective way to combat ISI. One of the main disadvantages of the most commonly used constant modulus algorithm (CMA) is its slow convergence rate. In order to speed up the convergence rate, a new modified approach named decorrelation based constant modulus algorithm (DBCMA) for eliminate the underwater channel resulting multipath effect is proposed, and the computer simulation results confirm the effectiveness of the proposed algorithm.