Title :
Joint carrier frequency offset and impulse noise estimation for underwater acoustic OFDM with null subcarriers
Author :
Haixin Sun ; Weijie Shen ; Zhaohui Wang ; Shengli Zhou ; Xiaoka Xu ; Yougan Chen
Author_Institution :
Key Lab. of Underwater Acoust. Commun. & Marine Inf. Technol., Xiamen Univ., Xiamen, China
Abstract :
Multicarrier modulation in the form of orthogonal frequency division multiplexing (OFDM) has been actively studied for underwater acoustic communications. In this paper, we investigate the OFDM performance in the presence of impulse-like noises. We present one method that estimates the carrier frequency offset (CFO) and the impulse noise separately, based on existing approaches, and one method that estimates them jointly. Simulation results in both time-invariant and time-varying channels have verified the receiver performance.
Keywords :
OFDM modulation; impulse noise; underwater acoustic communication; OFDM; carrier frequency offset; impulse noise estimation; impulse-like noises; multicarrier modulation; null subcarriers; orthogonal frequency division multiplexing; time-invariant channels; time-varying channels; underwater acoustic communications; Estimation; Interference; Joints; Noise; OFDM; Receivers; Underwater acoustics; Carrier frequency offset; compressed sensing; impulse noise; null subcarrier; underwater acoustic OFDM;
Conference_Titel :
Oceans, 2012
Conference_Location :
Hampton Roads, VA
Print_ISBN :
978-1-4673-0829-8
DOI :
10.1109/OCEANS.2012.6404949
