about Local Oscillator block
1 view (last 30 days)
Show older comments
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 Comment
Sree Vamsi
on 12 Mar 2019
where can i find the local oscillator block ???
i need it for my receiver design.
Answers (1)
Azzi Abdelmalek
on 18 Oct 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 Comments
Azzi Abdelmalek
on 26 Oct 2012
Edited: Azzi Abdelmalek
on 26 Oct 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
See Also
Categories
Find more on Sources in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!