Timeline for iq bpsk waveform generation
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 6, 2023 at 19:24 | comment | added | Dan Boschen | A real signal has negative frequencies-- when the signal is real the positive and negative frequencies are complex conjugate symmetric (Hermitian symmetric). When the signal is complex then the positive and negative frequencies are no long Hermitian symmetric and can be independent. | |
| Oct 30, 2022 at 11:59 | comment | added | BigBrownBear00 | I think if your signal is real you want to just multiply by cos, but if it's complex baseband, then you multiply by $e^{2{\pi}jf_ct/Fs}$ | |
| Oct 30, 2022 at 11:57 | comment | added | BigBrownBear00 | Check out these two references: dsplog.com/2008/08/08/negative-frequency dspillustrations.com/pages/posts/misc/… | |
| Oct 28, 2022 at 18:16 | comment | added | Sittin Hawk | But if Q is always 0j, and I multiply by a real cos function, then I would get a real signal out. That wouldn't work for representing negative frequencies, correct? | |
| Oct 28, 2022 at 18:03 | history | answered | BigBrownBear00 | CC BY-SA 4.0 |