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In this paper, the channel of the Underground Coal Mine (UCM) PLCs is analysis, which indicates the UCM PLCs is more complex than home PLCs and this channel can be described with multi-path characteristics and strong noise interference characteristics. In conventional OFDM systems a concatenation of Viterbi and Reed Solomon forward error correction with interleaving is used to improve BER performance...
This work presents an underground coal mine channel model for the broadband characterization of low-voltage power lines. The model is characterized by taking into account both measured and geometrical channel characteristics and can easily be used to take into account also the presence of noise. The channel is described by a conventional multipath characteristics model and a two-port equivalent described...
Power line communication (PLC) is one of the most attractive communication methods for in-home networks. However, the emissions of unwanted electric waves from PLC system, noise, inter-symbol interference (ISI) and inter-channel interference (ICI) cause harmful interference to communication systems. This paper discusses the characteristics of underground coal mine (UCM) power line communications (PLCs)...
In this paper, the channel of the underground coal mine (UCM) PLCs is analysis, which indicates the UCM PLCs is more complex than home PLCs and this channel can be described with multipath characteristics and strong noise interference characteristics. Accurate modulation should be adopted. Conventional OFDM and Wavelet OFDM are compared by focusing on two important aspects: transmission efficiency...
Because communication underground coal mine is difficulty, this paper analyzed the underground power line noise, and indicated that we can design the adaptive filter based on the adaptive theory and deal with the channel noise. Experiments show that, through the adoption of improved adaptive noise canceling technology and DSP system we can achieve to remove the noisy and gain pure signal.
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