about Local Oscillator block
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Hi,
In the “Local Oscillator” block there are two parameters “Sample time” and “Frequency”. Must these two be related to Nyquist theory? That, 1/Sample time > 2 * Frequency.
Thanks Senmeis
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Sree Vamsi
2019년 3월 12일
where can i find the local oscillator block ???
i need it for my receiver design.
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Azzi Abdelmalek
2012년 10월 18일
- The frequency is the repetition of your signal
- The sample time is the interval of time between two values of your signal
both have nothing to do with Nyquist theorem. The sample time must be chosen respecting Shanon theorem
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Azzi Abdelmalek
2012년 10월 26일
편집: Azzi Abdelmalek
2012년 10월 26일
That depends on what are you sampling, a signal or a system, And what are your objectives: control system, communication,...
If you want to make a discret control system, you must discretize your models with a sample time ts, that means all the signals must be sampled with ts.In this case ts choosen compared to the constant time of the output we want to control
Also if our signal is naturaly discret, Shanon theorem has nothing to do with it
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