Information Processing Techniques Program. Volume 2. Communications-Adaptive Internetting

Abstract

The goal of this program is the investigation and development of techniques for communications-adaptive internetting with particular emphasis on digital voice communications. The specific class of problems addressed relates to packet speech networks whose interconnecting links may be stressed as a result of traffic overloads or are time varying due to natural or hostile actions. This program extends the technology of fixed-topology packet-switching speech communications networks by introducing techniques for adapting both source encoder algorithms and network utilization strategies to the time-varying character of the links in an attempt to provide sustained voice communications capability under adverse conditions. The major accomplishments of the past nine months are: (A) Variable-Data-Rate Protocols for C2 Links, (B) Demonstration System for Packetized Voice over a Single-User Link with Time-Varying Capacity, (C) Adaptive Variable-Rate Modem with 'No-Cost' Up-Probing, (D) Adaptive Voice Communication on an Integrated, Time-Varying Network.

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Document Details

Document Type
Technical Report
Publication Date
Mar 31, 1977
Accession Number
ADA044071

Entities

People

  • Bernard Gold

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Cyber
  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Channel Capacity
  • Coding
  • Command And Control
  • Communications Protocols
  • Data Rate
  • Data Transmission
  • Demodulation
  • Demodulators
  • Information Processing
  • Modulators
  • Packet Loss
  • Speech Compression
  • Surface Acoustic Waves
  • Transmitters
  • Voice Communications
  • Voice Over Internet Protocol

Fields of Study

  • Computer science

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Radio communications and signal processing.
  • Speech Processing/Speech Recognition.