Question
Asked Dec 5, 2019
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In a PCM system, channels of 3 KHz bandwidth are used. If the uniform quantizer has 128 number of levels, then what will be the channel capacity?

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Expert Answer

Step 1

Channel capacity is defined is the maximum amount of data rate at which information can be reliably transmitted via the communication channel. The unit of channel capacity is bits per second (bps).

According to Shannon’s theorem, the capacity of a communication channel in the presence of a PCM system with uniform quantization can be expressed as

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C = 2B log, (L) bps –--> (1) B= Bandwidth of the channel in Hz L = Number of levels in the uniform quantizer

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Step 2

In this case, the bandwidth of the communication channel and the number of levels of the uniform quantizer are giv...

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B= 3 kHz = 3000 Hz L=128

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