A method for differentially coherent multichannel processing of acoustic OFDM signals

Author

Aval, Yashar M. ; Stojanovic, Milica

Author_Institution

Northeastern Univ., Boston, MA, USA

fYear

2012

fDate

17-20 June 2012

Firstpage

73

Lastpage

76

Abstract

We propose a low complexity array processing method for differential detection of OFDM signals over underwater acoustic channels. Partial FFT technique, developed previously for mitigating inter-carrier interference in single-channel receivers operating over time-varying channels, is extended to multichannel configuration. Performance results based on simulation and experimental data demonstrate the advantage of the proposed method compared to conventional differential and coherent detection.

Keywords

OFDM modulation; acoustic signal processing; intercarrier interference; interference suppression; signal detection; time-varying channels; underwater acoustic communication; acoustic OFDM signals; coherent detection; differential signal detection; differentially coherent multichannel processing; intercarrier interference mitigation; low complexity array processing; multichannel configuration; partial FFT technique; single-channel receivers; time varying channels; underwater acoustic channels; Acoustics; Arrays; Coherence; Demodulation; Doppler effect; OFDM; Receivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensor Array and Multichannel Signal Processing Workshop (SAM), 2012 IEEE 7th

Conference_Location

Hoboken, NJ

ISSN

1551-2282

Print_ISBN

978-1-4673-1070-3

Type

conf

DOI

10.1109/SAM.2012.6250565

Filename

6250565