16 KB/S Data Modem Partitioning

Abstract

The primary objective of this program was to study techniques to reduce the size and cost of the 16 kb/s modem. These techniques involved custom LSI and/or standard microprocessor implementation of the various functions involved in the 16 kb/s modem. On previous contracts a modem for 16 kb/s operation over the AUTOVON network was developed and was extensively tested over the OCONUS network. Results of both these efforts were very encouraging. Results of this investigation have shown that a cost/size/parts reduction of 33 to 50 percent would be possible with the application of commercially available bit slice microprocessor chips and some custom LSI devices. Also the use of a processor for signal processing results in a flexible solution that can adapt to changing requirements and track the latest state of the art techniques with minimum hardware changes. Thus implementation with a microprocessor appears to result in both a more cost-effective approach as well as a higher performance solution of the 16 kb/s modem design. It appears prudent to undertake an additional effort to construct a feasibility model to confirm the findings of this report.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1979
Accession Number
ADB043556

Entities

People

  • Daniel D. Mcrae
  • Fred C. Killmeyer

Organizations

  • Harris Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Analog Signals
  • Carrier Frequencies
  • Computer Programming
  • Computer Programs
  • Computers
  • Delay Lines
  • Diagrams
  • Digital Filters
  • Frequency
  • Integrated Circuits
  • Low Pass Filters
  • Microcode
  • Modulation
  • Modulators
  • Software Development
  • Test And Evaluation

Readers

  • Defense Acquisition Program Management
  • Integrated Circuit Design and Technology.
  • Radio communications and signal processing.