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Discussion :: Communication Systems

  1. A signal is sampled at 8 kHz and is quantized using 8 bit uniform quantizer. Assuming SNRq for a sinusoidal signal, the correct statement for PCM signal with a bit rate of R is

    2. A.
    R = 32 KbPs, SNRq = 25.8 dB
    B.
    R = 64 KbPs, SNRq = 49.8 dB
    C.
    R = 64 KbPs, SNRq = 58.8 dB
    D.
    R = 32 KbPs, SNRq = 49.8 dB

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    Answer : Option B

    Explanation :

    where n is no. of bit, fs is sampling frequency.

    SNR = 1.76 + 6.02n

    = 1.76 + 6.02 x 8 49.8 dB.

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