Incorporation of Uplink Channel State Information into an End-to-End Coded Satellite Communication System

Abstract

Satellite communications systems employing forward error correction (FEC) codes are simplified when the code is applied at the source's transmitter and removed at the end user's receiver (end-to-end coding), avoiding decoding and re-encoding on board the satellite. Channel capacity can be approached when channel state information from the uplink is incorporated into the soft information input to the downlink decoder. For fading channels, the channel state information is time-varying and most be updated frequently. This paper will describe techniques for both measuring and incorporating practical, bandwidth evident uplink channel state information in an end-to-end coded satellite communications system. Link performance with and without channel state information will be compared. A technique for estimating channel state information will also be analyzed.

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Document Details

Document Type
Technical Report
Publication Date
Apr 11, 2011
Accession Number
ADA569700

Entities

People

  • Nancy List
  • Ryan Shoup

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Air Force
  • Artificial Satellites
  • Atmospheric Motion
  • Bandwidth
  • Channel Capacity
  • Channel Models
  • Channel State Information
  • Coding
  • Communication Systems
  • Data Rate
  • Decoders
  • Decoding
  • Demodulators
  • Downlinks
  • Modulation
  • Satellite Communications
  • Uplinks

Fields of Study

  • Engineering

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Computer Programming and Software Development.
  • Tactical Satellite Communications Systems Engineering.

Technology Areas

  • Space