# Time and sample rate for QAM

I am trying to understand how to get time as I already have sample rate. I want to draw a graph of sample rate vs time. I have information such as carrier frequency, channel bandwidth. Can that be used to get time.

So far, I have understood this: Samples per symbol and number of symbols for QAM

In order to get the time, I would need to do this:

T = 1/Samples per symbol

Would this be correct.

• "I want to draw a graph of sample rate vs time" this is not very clear. Apr 16, 2020 at 15:24
• Sorry, I new to this field and I am learning. The previous suggestion in the above link is to draw a sample rate vs time graph and I am trying to do that. Thank you
– Zizi
Apr 16, 2020 at 15:28
• Rate of transmissions is usually fixed for a given configuration and it does not vary with time. That is why I asked to clarify. Apr 16, 2020 at 15:30
• I will go back to the other link and clarify with engineer. Thank you.
– Zizi
Apr 16, 2020 at 15:32

Consider you have a bandwidth of B. The sampling rate $$F_s$$ which is related to B using the relation $$F_s > 2B$$. Now the sample time is $$\frac{1}{F_s}$$. So if you have N samples then total time is $$\frac{N}{F_s}$$