Time-frequency Filtering of Gaussian and Impulse Noise for Spread Spectrum Power Line Communication

Gaoyong Luo

2012

Abstract

The affluence of impulse noise is one of the challenging problems of the power line communication (PLC) as a communication channel. However, current methods for impulse noise reduction are either not effective or requiring heavy computing for detecting impulse noise accurately. This paper presents a time-frequency filter design method for impulse and Gaussian noise mitigation by a reliable noise detector in the wavelet domain with local variance analysis. The filtering is applied only to the detected noisy samples with others unchanged in an effort to reduce the noise level by adapting its operation in accordance with variance characteristics. The received corrupted signal from spread spectrum system is decomposed into time-frequency domain by fast implementation of lifting wavelet transform for real-time filtering of mixed Gaussian and impulse noise. Experimental results demonstrate that the proposed method can significantly reduce impulse noise and improve bit error rate (BER) without introducing distortion, leading to better quality of service.

References

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Paper Citation


in Harvard Style

Luo G. (2012). Time-frequency Filtering of Gaussian and Impulse Noise for Spread Spectrum Power Line Communication . In Proceedings of the International Conference on Signal Processing and Multimedia Applications and Wireless Information Networks and Systems - Volume 1: SIGMAP, (ICETE 2012) ISBN 978-989-8565-25-9, pages 12-18. DOI: 10.5220/0004073500120018


in Bibtex Style

@conference{sigmap12,
author={Gaoyong Luo},
title={Time-frequency Filtering of Gaussian and Impulse Noise for Spread Spectrum Power Line Communication},
booktitle={Proceedings of the International Conference on Signal Processing and Multimedia Applications and Wireless Information Networks and Systems - Volume 1: SIGMAP, (ICETE 2012)},
year={2012},
pages={12-18},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004073500120018},
isbn={978-989-8565-25-9},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Signal Processing and Multimedia Applications and Wireless Information Networks and Systems - Volume 1: SIGMAP, (ICETE 2012)
TI - Time-frequency Filtering of Gaussian and Impulse Noise for Spread Spectrum Power Line Communication
SN - 978-989-8565-25-9
AU - Luo G.
PY - 2012
SP - 12
EP - 18
DO - 10.5220/0004073500120018