Design and Analysis of Low Frequency Communication System in Persian Gulf

Abstract

One of the important applications of underwater communication is speech transmission between two divers or between divers and ship or submarine. This paper describes a project designed to investigate and demonstrate underwater communication system in Persian Gulf for speech transmission in a real channel. At first, transmitter is designed, then channel with real data is simulated by neural network and at last receiver is designed. Transmitted data is speech signal that for more safety in transmission and low frequency bandwidth, a cryptography algorithm and speech coding algorithm is applied in transmitter. Quadrature phase shift keying (QPSK) signaling is employed to make efficient use of the available channel bandwidth. In the receiver, linear equalizer and decision feedback equalizer (DFE) are tested and the best of them is applied. Also ray tracing method is used for simulation of sound waves propagation in Persian Gulf underwater communication channel.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2008
Accession Number
ADA502198

Entities

People

  • A. Karimifard
  • H. Shahbazi

Organizations

  • University of Tehran

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Human Systems

DTIC Thesaurus Topics

  • Acoustic Channels
  • Acoustic Communications
  • Acoustic Propagation
  • Acoustic Waves
  • Coding
  • Communication Channels
  • Communication Systems
  • Digital Communications
  • Engineering
  • Frequency
  • Gulfs
  • Intersymbol Interference
  • Neural Networks
  • Persian Gulf
  • Signal Processing
  • Underwater Acoustic Communications
  • Underwater Communications

Fields of Study

  • Engineering

Readers

  • Materials Science
  • Radio communications and signal processing.
  • Speech Processing/Speech Recognition.

Technology Areas

  • AI & ML
  • Cyber
  • Cyber - Cryptography