Paper Info
Title
A DIFFUSION FXLMS ALGORITHM FOR MULTI-CHANNEL ACTIVE NOISE CONTROL AND VARIABLE SPATIAL SMOOTHING
Abstract
This paper studies the diffusion (Diff) control for multi-channel ANC systems, where a group of controllers and error microphones are physically distributed at different locations within a large area. In this case, the conventional consensus agreement for controllers cannot be reached. To solve this problem, a new Diff filtered-x least mean squares (Diff-FxLMS) algorithm that incorporates the knowledge of spatial smoothness is proposed. Compared to conventional Diff control criteria that have a fixed spatial smoothing strategy, the proposed Diff-FxLMS adjusts a so called spatial regularization (SR) coefficient adaptively such that the neighboring controllers keep their decision variables close to one another to minimize the global cost function while giving preference to possibly distinct local signals. A detailed performance analysis is carried out and verified by simulation. Based on the analysis, a variable SR formula is derived. The performance of the proposed algorithm is also compared with conventional methods.
Year
DOI
Venue
2021
10.1109/ICASSP39728.2021.9414609
2021 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP 2021)
Keywords
DocType
Citations 
diffusion FxLMS, multitask problem, performance analysis, network design
Conference
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Y. J. Chu100.34
S. C. Chan269073.18
C. M. Mak372.47
M. Wu411.03