Title :
A Study of Channel Estimation in OFDM System Based on a Single Vector Sensor for Underwater Acoustic Communications
Author :
Lv Yun-Fei ; Zheng Cui-e
Author_Institution :
Coll. of Underwater Acoust. Eng., Harbin Eng. Univ., Harbin
Abstract :
Channel estimation is an important procedure of coherent demodulation of OFDM system for underwater acoustic communications, by which the system performance is largely restricted. In this paper, the performance of three pilot patterns and their own application conditions are analyzed and compared. According to the simulation and experiment results, it is concluded that scatter pilot pattern is very suitable for OFDM system for underwater acoustic communications. In addition, vector hydrophone is also can be used to improve communication performance via joint processing of pressure and particle velocity.
Keywords :
OFDM modulation; channel estimation; hydrophones; underwater acoustic communication; channel estimation; orthogonal frequency division multiplexing; scatter pilot pattern; single vector sensor; underwater acoustic communications; vector hydrophone; Acoustic sensors; Channel estimation; Demodulation; OFDM; Pattern analysis; Performance analysis; Sensor systems; System performance; Underwater acoustics; Underwater communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.226
