Title :
Wavelet based OFDM for Power line Communication
Author :
Kar, Sagar Chandra ; Hussain, Shiraz ; Fernando, Xavier
Author_Institution :
Dept. of Electr. Eng., Ryerson Univ., Toronto, ON, Canada
Abstract :
Power line Communication (PLC) system offers cheaper mode of signal communication facilities. However, in fast Fourier transform (FFT) based OFDM system, a cyclic prefix (CP) of the same length as the channel impulse response needs to be added after each symbol to avoid inter symbol and inter carrier interference. This paper investigates the benefits of a filter bank based Wavelet Transform OFDM (WTOFDM) approach that doesn´t need the cyclic prefix and hence has higher throughput. Different types of wavelets based OFDM links are compared by simulation and the bi-orthogonal wavelet is found to be the best for PLC applications.
Keywords :
OFDM modulation; carrier transmission on power lines; channel bank filters; fast Fourier transforms; intercarrier interference; intersymbol interference; transient response; wavelet transforms; FFT based OFDM system; PLC system; WTOFDM; biorthogonal wavelet; channel impulse response; cyclic prefix; fast Fourier transform; filter bank based wavelet transform OFDM; intercarrier interference; intersymbol interference; power line communication; signal communication facilities; wavelet based OFDM; FFT; IFFT Inverse discrete wavelet transform (IDWT); OFDM; Power line communication (PLC); Wavelets;
Conference_Titel :
Electrical and Computer Engineering (CCECE), 2014 IEEE 27th Canadian Conference on
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4799-3099-9
DOI :
10.1109/CCECE.2014.6901147
