Transmitted energy as a basic system resource

Aarne Mämmelä, Ilkka Saarinen, Desmond P. Taylor

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    5 Citations (Scopus)


    Energy is a basic resource in digital transmission links. Physically, radio channels correspond to passive circuits and most of the transmitted energy is lost in the channel. Two alternative approaches are used for performance measurements in terms of energy. Either the average transmitted or received energy per bit is used, both usually normalized by the receiver noise spectral density. This leads to the average transmitted or received signal-to-noise ratio (SNR) per bit, respectively. However, the transmitted energy is the basic system resource. The average energy gain of a channel depends on the transmitted signal. For convenience, the transmitted SNR referred to the receiver is defined to be the product of the transmitted SNR and the representative energy gain, which is defined as the average energy gain of a signal that is uniformly distributed in all dimensions: time, frequency and space. An explicit relationship between the transmitted and received SNR's using the covariance concept is derived. Limitations of the use of different SNR definitions are summarized.
    Original languageEnglish
    Title of host publicationGLOBECOM '05. IEEE Global Telecommunications Conference, 2005
    PublisherIEEE Institute of Electrical and Electronic Engineers
    ISBN (Print)978-0-7803-9414-8
    Publication statusPublished - 2006
    MoE publication typeA4 Article in a conference publication
    EventIEEE Global Telecommunication Conference, GLOBECOM’05 - St. Louis, United States
    Duration: 28 Nov 20052 Dec 2005

    Publication series



    ConferenceIEEE Global Telecommunication Conference, GLOBECOM’05
    Abbreviated titleGLOBECOM’05
    Country/TerritoryUnited States
    CitySt. Louis


    • signal to noise ratio
    • frequency
    • fading
    • digital communication
    • radio links
    • digital transmission links
    • radio transmitters


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