SOME THOUGHTS ON MODULATION AND DEMODULATION FOR THE NEEDLES CHANNEL. PART I

Abstract

A highly random model for the Needles channel is adopted, and the application of detection theory yields a cross-correlator-radiometer receiver that is near-optimal at low S/N in the channel. Relationships to the Rake system are discussed. It is concluded that under certain conditions desirable waveforms for the Needles channel are sinusoids employed in a manner that circumvents intersymbol interference. Further conclusions about optimal durations for the sinusoids in terms of the channel dispersion, fluctuation rate, and S/N are deferred to a later report. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 15, 1959
Accession Number
AD0262922

Entities

People

  • R. Price

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • Correlators
  • Demodulation
  • Detection
  • Dispersions
  • Intermodulation
  • Intersymbol Interference
  • Modulation
  • Optical Correlators
  • Radiometers
  • Waveforms

Readers

  • Operations Research
  • Radio communications and signal processing.
  • Systems Analysis and Design