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  1. An 8 level encoding scheme is used in a PCM system of 10 kHz channel BW. The channel capacity is

    2. A.
    80 kbps
    B.
    60 kbps
    C.
    30 kbps
    D.
    18 kbps

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    Answer : Option B

    Explanation :

    C = 2B log2 M;

    M = 8 = 23, log2 M = 3 bits

    = 2 x 10 x 103 x 3 = 60 kbps.

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