Models for Frequency-Hopped Spread-Spectrum Communications over Fading Channels.

Abstract

The system consisting of the series connection of a frequency-hopper, channel, and frequency-dehopper is modeled as a fading channel. The effect of a detuning factor between the hopping patterns of the hopper and dehopper is investigated. Both slow-frequency-hopped and fast-frequency-hopped systems are studied for cases when the fading channel is nonselective and selective. The ability of the frequency-hopped system to overcome frequency-selective fading is considered. Limits are found on the spacing between frequency slots in order that the fading in different slots is independent. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA124433

Entities

People

  • Catherine Marie Keller

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Bandpass Filters
  • Carrier Frequencies
  • Communication Systems
  • Detuning
  • Digital Communications
  • Doppler Effect
  • Dwell Time
  • Frequency
  • Frequency Agility
  • Frequency Response
  • Frequency Shift
  • Intersymbol Interference
  • Modulation
  • Modulators
  • Multiple Access
  • Random Variables
  • Spread Spectrum

Fields of Study

  • Engineering

Readers

  • Radio communications and signal processing.

Technology Areas

  • Space