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Journal articles
Realization of Multi-Delay Filter using Fermat Number Transforms
Abstract : This paper is about an efficient implementation of adaptive filtering for echo cancelers. The first objective of this paper is to propose a simplified method of the flexible block Multi-Delay Filter (MDF) algorithm in the time-domain. Then, we will derive a new method for the step-size adaptation coefficient. The second objective is about the realization of a Block Proportionate Normalized Least Mean Squares (BPNLMS++) with the simplified MDF (SMDF) implementation. Using the new step-size method and the smaller block dimension proposed by SMDF, we achieve a faster convergence of the adaptive process with a limited computational cost. Then, an efficient implementation of the new procedure (SMDF-BPNLMS++) block filtering is proposed using Fermat Number Transform, which can significantly reduce the computation complexity of filter implantation on Digital Signal Processor.
https://hal.univ-brest.fr/hal-00395192
Contributor : Stéphane Azou <>
Submitted on : Monday, June 15, 2009 - 11:10:48 AM
Last modification on : Wednesday, June 24, 2020 - 4:19:21 PM
Contributor : Stéphane Azou <>
Submitted on : Monday, June 15, 2009 - 11:10:48 AM
Last modification on : Wednesday, June 24, 2020 - 4:19:21 PM