Title :
Performance of Wavelet OFDM in Underground Coal Mine PLCs
Author :
Shaoliang Wei ; Rujun Han ; Fengyu Cheng ; Yimin Chen ; Weiguo Liu
Author_Institution :
Coll. of Mechatron. Eng., Shanghai Univ., Shanghai
Abstract :
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 and spectral leakage. It will be shown that, for the case of the UCM power line channel, wavelet OFDM offers substantial advantages over conventional OFDM. Wavelet OFDM is proposed to use in UCM PLCs.
Keywords :
OFDM modulation; carrier transmission on power lines; coal; mining industry; multipath channels; wavelet transforms; multipath characteristic channel; noise interference characteristics; orthogonal frequency division multiplexing; power line channel; spectral leakage; underground coal mine PLC; wavelet OFDM; Background noise; Colored noise; Discrete Fourier transforms; Educational institutions; Interference; OFDM modulation; Power cables; Power systems; Programmable control; Working environment noise; Wavelet OFDM; power line communication; underground coal mine;
Conference_Titel :
Intelligent Information Technology Application, 2008. IITA '08. Second International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
978-0-7695-3497-8
DOI :
10.1109/IITA.2008.453
