title: Delay and Doppler spreads in underwater acoustic particle velocity channels.
abstract: Signal processing and communication in acoustic particle velocity channels using vector sensors are of interest in the underwater medium. Due to the presence of multiple propagation paths, a mobile receiver collects the signal with different delays and Doppler shifts. This introduces certain delay and Doppler spreads in particle velocity channels. In this paper, these channel spreads are characterized using the zero-crossing rates of channel responses in frequency and time domain. Useful expressions for delay and Doppler spreads are derived in terms of the key channel parameters mean angle of arrival and angle spread. These results are needed for design and performance prediction of systems that utilize underwater acoustic particle velocity and pressure channels.
authors.affiliation: Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Center for Wireless Communication and Signal Processing Research, Newark, New Jersey 07102, USA. hg45@njit.edu
authors.forename: Huaihai
authors.initials: H
authors.lastname: Guo
authors.forename: Ali
authors.initials: A
authors.lastname: Abdi
authors.forename: Aijun
authors.initials: A
authors.lastname: Song
authors.forename: Mohsen
authors.initials: M
authors.lastname: Badiey
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D003195:Computer Communication Networks / Q000295:instrumentation*; D004301:Doppler Effect; D008891:Military Science / Q000379:methods*; D008962:Models, Theoretical; D009792:Oceans and Seas; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation