A cyclostationary blind Doppler estimation method for underwater acoustic communications using direct-sequence spread spectrum signals

Author

Cotae, Paul ; Yang, T.E.

Author_Institution

Electr. Eng. Dept., Univ. of the District of Columbia, Washington, DC, USA

fYear

2010

fDate

10-12 June 2010

Firstpage

323

Lastpage

326

Abstract

A new method for blind (non-data aided) Doppler shift estimation caused by relative motion assumed to be the same on each hydrophone receiver in a SIMO context is presented. The proposed method is based on the second order stationary statistics and it was applied to estimate the average and instantaneous Doppler shift for a single carrier underwater acoustic communications. Past experimental data collected at sea are used to determine the average and instantaneous Doppler shift within a direct sequence spread spectrum signal containing 52 repeated m-sequences.

Keywords

Doppler shift; blind source separation; m-sequences; spread spectrum communication; underwater acoustic communication; SIMO context; cyclostationary blind Doppler shift estimation method; direct-sequence spread spectrum signals; hydrophone receiver; second order stationary statistics; underwater acoustic communications; Acoustic propagation; Baseband; Context; Covariance matrix; Doppler shift; Frequency synchronization; Multiaccess communication; Spread spectrum communication; Underwater acoustics; Underwater communication; Blind Doppler estimation; cyclostationarity; direct sequence spread spectrum; msequence; non data aided synchronization; underwater communications;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (COMM), 2010 8th International Conference on

Conference_Location

Bucharest

Print_ISBN

978-1-4244-6360-2

Type

conf

DOI

10.1109/ICCOMM.2010.5509047

Filename

5509047