mani bindu
Newbie level 1
A bandpass signal has lower frequency 1002.5 khz and higher frequency 1046 khz. Determine the minimum sampling rate so as to have a minimum guard band of 4khz between two spectrum replicas.
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Not quite right. Also in bandpass sampling the sampling frequency must be at least double the signal bandwidth: fs >= 2BThe signal bandwidth is 1046-1002.5 = 43.5kHz. Add a guard band of 4kHz and the required minimum sampling rate is 47.5kHz.
Is it clear from the original question that this is the case? I'm worried that I've worked too much with complex baseband representation and can't recognise a real signal when I see it...Without quadrature sampling
It's not explicitely stated. But obviously the question is just an excercise problem about sampling. Complex signals and quadrature demodulation are advanced stuff beyond basic sampling theory.Is it clear from the original question that this is the case? I'm worried that I've worked too much with complex baseband representation and can't recognise a real signal when I see it...