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Supose there are 12 signals, each with a max frequency of 3kHz. All 12 are multiplexed together
on a digital link and have a quantization error that is 3% of the peak at the most. Using 16-QAM,
what is the total bandwidth of the link?
Please show steps!
Solution
If unfiltered, the bandwidth of the main lobe is twice the Nyquist bandwidth or twice the symbol
rate.For a given bandwidth (B), the highest theoretical symbol rate (fsym) is 2B.
Here fsym = 3KHz = 2B
so, B= 1500Hz

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Bandwidth of a 12-Signal Multiplexed Digital Link Using 16-QAM

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