Differential Orthogonal Space-Time Block Coding Modulation for Time-Variant Underwater Acoustic Channels

Fengzhong Qu, Zhenduo Wang, Liuqing Yang

Research output: Contribution to journalReview articlepeer-review

18 Scopus citations


Reliable underwater acoustic (UWA) communications are challenging since the channels are well known to be doubly selective in both time and frequency domains. The doubly-selective fading UWA channels, however, also provide double diversity gains. In addition, multiple transducers and/or hydrophones are often deployed, providing space diversity to combat channel fading. To exploit all these diversities, a differential multiple-input-multiple-output (MIMO) scheme for doubly-selective fading channels is presented in this paper. The proposed differential orthogonal space-time block coding (DOSTBC) approach adopts the basis expansion model (BEM) to capture the channel variation in time domain. Both analytical and simulated results show that the proposed BEM-DOSTBC approach is reliable by collecting 3-D diversity: space, multipath, and Doppler. The proposed approach was tested during the RACE08 sea experiment and its reliability was confirmed by the experiment results.

Original languageEnglish (US)
Article number7467410
Pages (from-to)188-198
Number of pages11
JournalIEEE Journal of Oceanic Engineering
Issue number1
StatePublished - Jan 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 1976-2012 IEEE.


  • Basis expansion model
  • MIMO
  • differential
  • space-time block coding (STBC)
  • underwater acoustic communications


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