Impulsive noise detection in PLC with smoothed L0-norm
Filbert H. Juwono, Qinghua Guo, Defeng Huang, Kit Po Wong, Lu Xu
Abstract
Power-line communications (PLC) commonly employs orthogonal frequency-division multiplexing (OFDM) as the modulation technique, and impulsive noise has a significant negative impact on its performance. Using the property of null subcarriers in OFDM and the fact that impulsive noise is sparse, we formulate a minimization problem to detect and estimate the impulsive noise. In previous works, ℓ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> -norm minimization was employed to achieve this task. In this paper, we propose to use a smoothed ℓ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> -norm minimization algorithm for impulsive noise detection instead. Simulation results show that this approach is promising as it achieves comparable performance as ℓ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> -norm minimization but with much lower complexity.
BibTeX
@inproceedings{icassp2015_impulsivenoisede,
title = {Impulsive noise detection in PLC with smoothed L0-norm},
author = {Filbert H. Juwono and Qinghua Guo and Defeng Huang and Kit Po Wong and Lu Xu},
booktitle = {ICASSP 2015},
year = {2015}
}