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.