Fade margin

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title: "Fade margin" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["radio-frequency-propagation-fading"] topic_path: "general/radio-frequency-propagation-fading" source: "https://en.wikipedia.org/wiki/Fade_margin" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

In telecommunications, the term fade margin (fading margin) has the following meanings:

  • A design allowance that provides for sufficient system gain or sensitivity to accommodate expected fading, for the purpose of ensuring that the required quality of service is maintained.
  • The amount by which a received signal level may be reduced without causing system performance to fall below a specified threshold value. It is mainly used to describe a communication system such as satellite, for example a system like globalstar operates at 25-35 dB Fade margin.

References

  • Attila Hilt, "Availability and Fade Margin Calculations for 5G Microwave and Millimeter-Wave Anyhaul Links", Applied Sciences, 2019, 9(23), 5240; https://doi.org/10.3390/app9235240., Trevor Manning, "Microwave Radio Transmission Design Guide", 2nd edition; Artech House: London, UK, 2009.

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radio-frequency-propagation-fading