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• Performance of the Direct Sequence Spread Spectrum Underwater Acoustic Communication System with Differential Detection in Strong Multipath Propagation Conditions

  Publikacja

  • J. Schmidt
  • I. Kochańska
  • A. Schmidt

  - Archives of Acoustics - Rok 2024

  The underwater acoustic communication (UAC) operating in very shallow-water should ensure reliable transmission in conditions of strong multipath propagation, significantly disturbing the received signal. One of the techniques to achieve this goal is the direct sequence spread spectrum (DSSS) technique, which consists in binary phase shift keying (BPSK) according to a pseudo-random spreading sequence. This paper describes the DSSS...

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• Study of the Performance of DSSS UAC System Depending on the System Bandwidth and the Spreading Sequence

  Publikacja

  • I. Kochańska
  • R. Salamon
  • J. Schmidt
  • A. Schmidt

  - SENSORS - Rok 2021

  A signal transmitted in an Underwater Acoustic Communication (UAC) system operating in a shallow-water channel suffers from strong time dispersion due to multipath propagation. This causes the Inter-Symbol Interference (ISI) observed in the received signal, which significantly limits the communication system’s reliability and transmission rate. In such propagation conditions, the Direct-Sequence Spread Spectrum (DSSS) method is...

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