Title :
Clipping noise mitigation for channel estimation in OFDM systems
Author :
Xiao, Yue ; Shaoqian Li ; Lei, Xia ; Tang, Youxi
Author_Institution :
Net. Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Hefei
fDate :
6/1/2006 12:00:00 AM
Abstract :
This letter provides a new technique to mitigate the clipping noise on pilot symbols in clipped and pilot-aided orthogonal frequency division multiplexing (OFDM) systems. The basic principle is to directly filter the clipping noise on the positions of pilots in the frequency domain before the insertion of pilots. Simulation results show that the new technique can effectively improve channel estimation and system performance
Keywords :
OFDM modulation; channel estimation; frequency-domain analysis; interference suppression; OFDM; channel estimation; clipping noise mitigation; frequency domain; orthogonal frequency division multiplexing system; pilot symbol; Bandwidth; Channel estimation; Chromium; Degradation; Fast Fourier transforms; Filters; Frequency domain analysis; OFDM; Peak to average power ratio; System performance;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2006.1638620
