2 FSK/QPSK (Frequency Shift Keying/Quadrature Phase Shift Keying) Transmitter and Receiver: Design and Performance

Abstract

This research considers a particular form of M-ary signaling called 2 FSK/QPSK. It is a unique way of combining two modulation methods to produce an 8-ary signaling technique whose noise performance is shown to be significantly better than 8-PSK. A transmitter and receiver for 2 FSK/QPSK is designed, built tested and analyzed. Theoretical and experimental results are compared using a plot of probability of bit error versus signal-to-noise ratio (SNR). Known theoretical performance of 8-PSK is used for comparison. Results show a 5 dB theoretical improvement in SNR and a 3 dB experimental improvement of 2 FSK/QPSK relative to 8-PSK. Keywords include: Quadrature phase shift keying (QPSK), Frequency shift keying (FSK), 8-PSK, and M-ary signaling.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1987
Accession Number
ADA190028

Entities

People

  • Michael D. Sonnefeld
  • Nels A. Frostenson

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Bandpass Filters
  • Bandwidth
  • Communication Systems
  • Decoding
  • Demodulators
  • Electrical Engineering
  • Engineering
  • Frequency Bands
  • Frequency Response
  • Frequency Shift
  • Modulation
  • Modulators
  • Phase Shift
  • Probability
  • Pulse Generators
  • United States
  • United States Naval Academy

Fields of Study

  • Engineering

Readers

  • Radio communications and signal processing.