Timeline for I/Q plane plot understanding?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Dec 19, 2019 at 22:51 | comment | added | Dan Boschen | The offset is in Q from the first sample to about 62000 samples in, and then there is no offset after that. Compared to your file size it is a very small portion of the entire data captured. | |
| Dec 19, 2019 at 22:34 | comment | added | Dan Boschen | I looked at it and agree with @hotpaw2-- -Just look at your Q data versus time and there is an offset in Q at approximately 62000 samples in. (so could either be a temporal offset in your measurement instrument or your SDR) If that answer he gave also makes sense to you, consider marking it as correct to close this question. | |
| Dec 19, 2019 at 21:57 | comment | added | tue2017 | drive.google.com/open?id=18VEn0W61XqyuBYF2UBV8eKCTuW9NuUQ0 I am attaching the file link with all the samples I receive. First column is the I values and second column is Q values. I simply plot using python using this command dataframerx.sample(n=3000000,random_state=1).plot(kind='scatter',x='I',y='Q',grid=True,xlim=(-2,2),ylim=(-2,2)) | |
| Dec 19, 2019 at 0:07 | answer | added | hotpaw2 | timeline score: 1 | |
| Dec 18, 2019 at 18:37 | comment | added | Dan Boschen | Can you provide a stem plot of your initial imaginary samples in the time domain? I want to see if every other sample is offset or something else | |
| Dec 18, 2019 at 17:44 | history | edited | tue2017 |
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| Dec 18, 2019 at 16:50 | review | First posts | |||
| Dec 18, 2019 at 22:26 | |||||
| Dec 18, 2019 at 16:50 | history | asked | tue2017 | CC BY-SA 4.0 |