China Ocean Engineering

, Volume 31, Issue 2, pp 256–260 | Cite as

Precoding based channel prediction for underwater acoustic OFDM

  • En Cheng
  • Na Lin
  • Hai-xin Sun
  • Jia-quan Yan
  • Jie Qi
Technical Notes
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Abstract

The life duration of underwater cooperative network has been the hot topic in recent years. And the problem of node energy consuming is the key technology to maintain the energy balance among all nodes. To ensure energy efficiency of some special nodes and obtain a longer lifetime of the underwater cooperative network, this paper focuses on adopting precoding strategy to preprocess the signal at the transmitter and simplify the receiver structure. Meanwhile, it takes into account the presence of Doppler shifts and long feedback transmission delay in an underwater acoustic communication system. Precoding technique is applied based on channel prediction to realize energy saving and improve system performance. Different precoding methods are compared. Simulated results and experimental results show that the proposed scheme has a better performance, and it can provide a simple receiver and realize energy saving for some special nodes in a cooperative communication.

Key words

underwater acoustic communication precoding channel prediction CFO OFDM 

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Copyright information

© Chinese Ocean Engineering Society and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • En Cheng
    • 1
    • 2
    • 3
  • Na Lin
    • 1
    • 2
    • 3
  • Hai-xin Sun
    • 1
    • 2
    • 3
  • Jia-quan Yan
    • 1
    • 2
    • 3
  • Jie Qi
    • 1
    • 3
  1. 1.School of Information Science and EngineeringXiamen UniversityXiamenChina
  2. 2.Key Laboratory of Underwater Acoustic Communication and Marine Information Technology (Xiamen University), Ministry of EducationXiamenChina
  3. 3.Science and Technology on Underwater Acoustic Antagonizing LaboratoryBeijingChina

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