Doppler compensation for D-STBC coded time-varying underwater acoustic channels

Saed Daoud, Bahattin Karakaya, Ali Ghrayeb

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper we investigate the performance of distributed space-time block coding (D-STBC) orthogonal frequency division multiplexing (OFDM) over underwater acoustic (UWA) channels. In particular, we consider a relaying system consisting of one source, two relays, and one destination. The relays operate in amplify-and-forward (AF) mode. The underlying channels are assumed to be time-varying frequency selective channels, where the only source of time variation is the relative motion between transceivers. Alamouti D-STBC scheme is used in the second hop, and a two stage receiver is adopted at the destination: in the first stage, multiple resampling (MR) preprocessing of the received signals is performed to minimize the effect of intercarrier interference (ICI), and in the second stage ICI equalization is performed in the frequency domain to further reduce the effect of the residual ICI. To further boost the performance, successive interference cancellation (SIC) is used, where the estimates of the signals at the output of the ICI equalizer are used as tentative decisions. Compared to the single resampling (SR) front end preprocessing, simulation results show the superiority of MR front-end receiver. Also, SIC further boosts the performance, but still, there is a significant gap with respect to the ICI-free limit, when the receiver has perfect knowledge of ICI coefficients and eliminates them completely.

Original languageEnglish
Title of host publicationIEEE Wireless Communications and Networking Conference, WCNC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages821-826
Number of pages6
ISBN (Electronic)9781479930838
DOIs
Publication statusPublished - 10 Nov 2014
Externally publishedYes
Event2014 IEEE Wireless Communications and Networking Conference, WCNC 2014 - Istanbul, Turkey
Duration: 6 Apr 20149 Apr 2014

Other

Other2014 IEEE Wireless Communications and Networking Conference, WCNC 2014
CountryTurkey
CityIstanbul
Period6/4/149/4/14

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Keywords

  • Amplify-and-forward
  • Doppler scaling
  • equalization
  • intercarrier interference
  • resampling

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Daoud, S., Karakaya, B., & Ghrayeb, A. (2014). Doppler compensation for D-STBC coded time-varying underwater acoustic channels. In IEEE Wireless Communications and Networking Conference, WCNC (pp. 821-826). [6952194] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WCNC.2014.6952194