Abstract
This paper presents a new channel estimation, equalization, and phase correction scheme to combat the convergence and stability problem encountered by time-domain adaptive equalizers in underwater acoustic communication systems. Large Doppler spread and symbol scaling in underwater channels have been challenging problems causing significant phase drift and performance degradation. Our new method targets this problem by first allowing phase errors in the estimation of the fading channel coefficients and then perform group-wise (rather than symbol-wise) phase estimation and correction after equalization and multiple channel combining. Single transmitter and multiple receiver data obtained through ocean experiments have been processed using the proposed method and the results show that the new methods can achieve Bit Error Rate (BER) on the order of 10^-4 with very high stability.
Recommended Citation
Y. R. Zheng, "Channel Estimation and Phase-Correction for Robust Underwater Acoustic Communications," Proceedings of the IEEE Military Communications Conference, 2007. MILCOM 2007, Institute of Electrical and Electronics Engineers (IEEE), Jan 2007.
The definitive version is available at https://doi.org/10.1109/MILCOM.2007.4454811
Meeting Name
IEEE Military Communications Conference, 2007. MILCOM 2007
Department(s)
Electrical and Computer Engineering
Sponsor(s)
United States. Office of Naval Research
University of Missouri Research Board
Keywords and Phrases
Channel Estimation; Equalization; Phase Correction; Underwater Acoustic Communication Systems
Document Type
Article - Conference proceedings
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2007 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
01 Jan 2007
