Title :
Mitigation of effect of impulsive noise for OFDM systems over power line channels
Author :
Kim, Yong-Hwa ; Kim, Kyong-Hoe ; Oh, Hui-Myoung ; Kim, Kwan-Ho ; Kim, Seong-Cheol
Author_Institution :
Korea Electrotechnol. Res. Inst., Ansan
Abstract :
Impulsive noise introduces significant time variance into the power line channel and causes performance degradation of orthogonal frequency division multiplexing (OFDM) systems. In this paper, we provide a performance analysis for OFDM-based power line communications in the presence of impulsive noise. Performance degradation of coherent M-ary PSK and differential MPSK can be mitigated by a signal level limiter. Simulation results present that the optimum signal level can significantly improve the performance of OFDM systems over power line channels with impulsive noise.
Keywords :
OFDM modulation; carrier transmission on power lines; differential phase shift keying; impulse noise; telecommunication channels; OFDM systems; differential MPSK; impulsive noise; performance degradation; power line channels; Additive white noise; Background noise; Channel estimation; Degradation; Gaussian noise; Noise level; OFDM; Phase shift keying; Power line communications; Programmable control; Power line communication (PLC); channel estimation; impulsive noise; orthogonal frequency-division multiplexing (OFDM);
Conference_Titel :
Power Line Communications and Its Applications, 2008. ISPLC 2008. IEEE International Symposium on
Conference_Location :
Jeju city, Jeju Island
Print_ISBN :
978-1-4244-1975-3
Electronic_ISBN :
978-1-4244-1976-0
DOI :
10.1109/ISPLC.2008.4510459
