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
1 Commento
Sree Vamsi
il 12 Mar 2019
where can i find the local oscillator block ???
i need it for my receiver design.
Risposte (1)
Azzi Abdelmalek
il 18 Ott 2012
- 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
3 Commenti
Azzi Abdelmalek
il 26 Ott 2012
Modificato: Azzi Abdelmalek
il 26 Ott 2012
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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