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Signal to noise ratio is the preferred metric when ____(a) desired signal bandwidth is less than Nyquist bandwidth(b) desired signal bandwidth is approximately equal to Nyquist bandwidth(c) desired signal bandwidth is greater than Nyquist bandwidth(d) bandpass sampling is usedI got this question in semester exam.I need to ask this question from ADC Tradeoffs topic in section Technology Tradeoffs in Software Defined Radio of Cognitive Radio

Answer»

Right OPTION is (B) DESIRED signal bandwidth is APPROXIMATELY equal to Nyquist bandwidth

The best explanation: Signal to noise ratio is the preferred metric for ADC performance when the desired signal bandwidth is approximately equal to Nyquist bandwidth. Radar matched filter is an example for this CONDITION. The matched filter optimally operates with the square shape of the radar pulses.



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