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A Realization Method of DS/SS System for A Cyclic Noise Adaptation on Power Line Channels  

Jung, Kwang-Hyun (Kangwon National University)
Park, Chong-Yeun (Kangwon National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.2, 2010 , pp. 47-55 More about this Journal
Abstract
The power line communication channel has characteristic variation problems which are caused by load. The spread spectrum technique has been used to overcome these problems. One of that is the direct sequence spread spectrum(DS/SS) system which is not necessary to additional hardwares. The BER of DS/SS system is decreased by longer length of PN code, but data transfer rate is decreases, so data transfer rate is hard to satisfies their own specifications especially in narrowband PLC systems. Spread Spectrum system with Dual-processing Gain tries to reflect cyclic characteristics of power line noise. But that system assumes that shapes of power line channel are symmetrical with respect to the 1/4 point of main frequency(60Hz in Korea), therefore cannot achieves various shapes of real power line noise. Thus in this paper, noise adaptive DS/SS system which PN code is changed by noise levels for various channel noises is proposed and simulated. The different kinds of noises are modeled and measured for simulation, the proposed system is verified that has lower data transfer rate and lower error rate than conventional system by simulation results.
Keywords
PLC; PLM; Spread Spectrum; DS/SS; Power line noise;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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