WSEAS Transactions on Signal Processing
Print ISSN: 1790-5052, E-ISSN: 2224-3488
Volume 10, 2014
Noise Canceller Using a New Modified Adaptive Step Size LMS Algorithm
Authors: ,
Abstract: In this paper, the performance of adaptive noise canceller (ANC) in stationary environment is improved by using a new proposed variable step size LMS algorithm. The algorithm is called (Absolute Average Error- Based Adjusted step size LMS algorithm (AAE-ASSLMS)). The adjusted step size is based on the absolute average value of the current and the previous sample errors. The algorithm has low level steadystate misadjustment compared with the standard LMS and another Variable Step Size LMS (VSSLMS) algorithm for ANC. The proposed algorithm achieved (16, 13) dB difference of attenuation factor in a steady state compared with the LMS and VSSLMS algorithms respectively. Moreover, the proposed algorithm is insensitive to the both power variation of reference input and different signal to noise ratios at the primary input of ANC.
Search Articles
Pages: 637-644
WSEAS Transactions on Signal Processing, ISSN / E-ISSN: 1790-5052 / 2224-3488, Volume 10, 2014, Art. #66