Rain-Outage Reduction by Data Storage in EHF SATCOM Systems.

Abstract

Site diversity is usually proposed as a means for improving earth/satellite path availability at EHF, because intense rain cells are generally small in diameter. However, there are many applications, such as point-to-point, high-data-rate communications, where site diversity is either very inconvenient or impossible. In such cases, provided the user can accept a short delay, incoming data can be stored and retransmitted at a higher rate once the period of high attenuation has passed. By using statistical long-term attenuation and fade-duration probability distributions gathered at several frequencies and geographic locations, an empirical model for determining the improvement in effective availability created by a given amount of storage time is developed. The model appears to be applicable to all geographical areas where standard climatological data is gathered. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 25, 1980
Accession Number
ADA096719

Entities

People

  • Robert P. Rafuse

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • 5G Wireless Networks
  • Amplitude Modulation
  • Artificial Satellites
  • Atmospheric Attenuation
  • Attenuation
  • Data Sets
  • Data Storage Systems
  • Databases
  • Distribution Functions
  • Fresnel Zones
  • Geometry
  • Handbooks
  • Rain Gages
  • Satellite Communications
  • Space Communications
  • Standards
  • Wave Propagation

Readers

  • Atmospheric Remote Sensing.
  • Economics
  • Radio communications and signal processing.

Technology Areas

  • Space