Title :
Distributed LMS with limited data rate
Author :
Xie, S.L. ; Li, H.R.
Author_Institution :
Signal Process. Dept., Inst. for Infocomm Res., Singapore, Singapore
Abstract :
The problem of distributed least mean-square (D-LMS) on a network with a limited communication data rate is addressed. Each node in the network has a quantiser consisting of a first-order dynamical encoder/decoder and can only communicate with its neighbours. Simulation results demonstrate that for Gaussian data and small step-sizes the proposed cooperative D-LMS with quantisation is mean-square stable in all quantisation levels including the 1-bit case, and its performance approaches unquantised cooperative D-LMS when the quantisation level is fairly small.
Keywords :
least mean squares methods; quantisation (signal); telecommunication networks; Gaussian data; distributed LMS; distributed least mean-square method; first-order dynamical encoder-decoder; limited communication data rate; quantisation levels;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.0251
