The Offset Fast Fourier Transform (OFFT),

Abstract

It is shown that by changing the weighting factors, the fast Fourier Transform (FET) may be modified to produce a frequency offset. The technique may be used in digital modems to allow a receiver to effectively tune-in to two or more frequencies simultaneously. It may allow improved frequency acquisition in burst transmission systems and improve frequency tracking in conditions where there is rapid rate of change of frequency. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1976
Accession Number
ADA041729

Entities

People

  • M. Tomlinson

Organizations

  • Royal Signals and Radar Establishment

Tags

Communities of Interest

  • Counter IED
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acquisition
  • Burst Transmission
  • Discrete Fourier Transforms
  • Doppler Effect
  • Fast Fourier Transforms
  • Filters
  • Frequency
  • Integrals
  • Local Oscillators
  • Matched Filters
  • Mathematics
  • Oscillators
  • Waveforms

Readers

  • Approximation Theory.
  • Radio communications and signal processing.