DABS (Discrete Address Beacon System) Downlink Coding.

Abstract

The report summarizes the encoding/decoding techniques incorporated into the DABS downlink design. It has been determined that the binary cyclic code used for the uplink is applicable to the downlink interference environment, thus rendering considerable hardware simplication in the transponder. The downlink environment leads to a characterization as a burst erasure channel, which allows the code to be used in a burst correction capacity. The report concentrates on the error correction techniques including specific implementations. Evaluation of the performance of the code by simulation and/or bench test is presently being carried out and will be reported in a future document.

Document Details

Document Type
Technical Report
Publication Date
Sep 12, 1975
Accession Number
ADA016356

Entities

People

  • J. T. Barrows

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • Beacons
  • Bench Tests
  • Coding
  • Communication Systems
  • Decoding
  • Discrete Address Beacon Systems
  • Downlinks
  • Environment
  • Message Decoding
  • Message Processing
  • Notation
  • Radio Communications
  • Satellite Communications
  • Simulations
  • Space Communications
  • Test And Evaluation

Readers

  • Aerospace Test and Evaluation
  • Computer Programming and Software Development.
  • Radio communications and signal processing.