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Carrier to Interference ratio

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    Mina Ali

    What is the minimum value of CIR for which the communication takes place? In hexagonal cellular structure.

    #69486 Reply


    it’s not what design you use, but rather the speech codec you agree to use.
    When using AMR FR codec with low speech bitrate, you can have a very high protection to CIR. It can go down to a C/I of 1dB while maintaining the communication. This requires AMR FR 4.75kbps.
    Using the typical 12.2kbps, the call will start dropping at C/I around 6dB.

    Precise values can be found in 3GPP docs 😉


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Reply To: Carrier to Interference ratio
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