TY - GEN
T1 - Iterative Channel Estimation and Impulsive Noise Mitigation for OFDM Signals in Power-Line Communication
AU - Zhou, Chenyang
AU - Wang, Ziwei
AU - Wang, Hua
AU - Yang, Dewei
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - The impulsive noise in power line communication(PLC) can lead to the performance degradation of the receiver. Blanking nonlinearity is usually used to eliminate the effect of impulsive noise for its simplicity and effectiveness. However, it reduces the received signal energy and brings additional intercarrier interference(ICI) in the orthogonal frequency-division multiplexing(OFDM) system. In this paper, we derive the ICI caused by blanking nonlinearity first. Considering the impact of ICI on the useful signal, we propose an iterative ICI cancellation scheme for the OFDM system. The ICI in pilot symbols and data symbols are estimated according to the channel frequency response and the estimated soft symbols. Numerical results indicate that our scheme can improve the performance of the channel estimation and the performance of the bit error rate of the receiver.
AB - The impulsive noise in power line communication(PLC) can lead to the performance degradation of the receiver. Blanking nonlinearity is usually used to eliminate the effect of impulsive noise for its simplicity and effectiveness. However, it reduces the received signal energy and brings additional intercarrier interference(ICI) in the orthogonal frequency-division multiplexing(OFDM) system. In this paper, we derive the ICI caused by blanking nonlinearity first. Considering the impact of ICI on the useful signal, we propose an iterative ICI cancellation scheme for the OFDM system. The ICI in pilot symbols and data symbols are estimated according to the channel frequency response and the estimated soft symbols. Numerical results indicate that our scheme can improve the performance of the channel estimation and the performance of the bit error rate of the receiver.
KW - Power line communication(PLC)
KW - blanking nonlinearity(BN)
KW - impulsive noise
KW - intercarrier interference(ICI)
KW - orthogonal frequency division multiplexing(OFDM)
UR - http://www.scopus.com/inward/record.url?scp=85124421301&partnerID=8YFLogxK
U2 - 10.1109/ICCT52962.2021.9658018
DO - 10.1109/ICCT52962.2021.9658018
M3 - Conference contribution
AN - SCOPUS:85124421301
T3 - International Conference on Communication Technology Proceedings, ICCT
SP - 228
EP - 232
BT - 2021 IEEE 21st International Conference on Communication Technology, ICCT 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st IEEE International Conference on Communication Technology, ICCT 2021
Y2 - 13 October 2021 through 16 October 2021
ER -