Design and Performance of a Frequency Hopping Communications System Using Delta Modulation.

Abstract

A way to increase jamming immunity and to decrease the intercept probability of a communication system is to use spread spectrum (SS) techniques. In this report a frequency hopping SS system (transmitter and receiver) is presented. This system is designed, built, and tested to send and receive digitized voice by utilizing a single chip delta modulator/demodulator. The report describes the circuitry employed, lists the important parameters of the system and includes photographs of various waveforms. The recovered audio is of good quality using digital data rates as low as 25 kilobits per second. A hopping rate of 100 hops per second is used in the design. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1978
Accession Number
ADA066372

Entities

People

  • Habib Kucukoglu

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Audio Amplifiers
  • Bandwidth
  • Carrier Frequencies
  • Circuits
  • Communication Systems
  • Data Rate
  • Demodulators
  • Electrical Engineering
  • Engineering
  • Frequency Synthesizers
  • Local Oscillators
  • Modulation
  • Modulators
  • Networks
  • Oscillators
  • Spread Spectrum

Readers

  • Radio communications and signal processing.