Laboratory Tests of a Data Link Modem.

Abstract

The report evaluates the performance of two minimum shift key (MSK) modulation modems designed for a very high frequency (vhf) data link communications. Tests consisted of determining the probable bit error of two modems in a loop-around mode for each modem and then in a back-to-back mode between the two modems. For each of these two test conditions, the modems were subjected to various signal-to-noise (S/N) ratios at the data rates of 2400 and 4800 bits/second (b/s). Each test was terminated after 800 bit errors were accumulated, except for those test runs where the modem was running essentially error free, the test period was limited to a 24-hour period. Results indicated that the performance of each modem was the same over the S/N ratios used, within a plus or minus 1-dB S/N tolerance.

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1975
Accession Number
ADA017065

Entities

People

  • Joseph A. Bilello

Tags

DTIC Thesaurus Topics

  • Data Links
  • Data Rate
  • Frequency
  • Frequency Bands
  • Laboratory Procedures
  • Laboratory Tests
  • Modulation
  • Radio Frequency
  • Very High Frequency

Readers

  • Radio communications and signal processing.
  • Software Engineering