Timeline for Why does QAM use a grid-like distribution versus a more efficient spacing?
Current License: CC BY-SA 4.0
16 events
| when toggle format | what | by | license | comment | |
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| Mar 4, 2024 at 22:32 | comment | added | DarenW | There is a Signal Processing stack exchange that might be a better place to ask about this. | |
| Mar 2, 2024 at 23:40 | answer | added | asndre | timeline score: 4 | |
| Mar 1, 2024 at 16:34 | vote | accept | Joshua Walker | ||
| Mar 1, 2024 at 13:57 | history | edited | Marcus Müller | CC BY-SA 4.0 | deleted 1540 characters in body |
| Mar 1, 2024 at 13:57 | comment | added | Marcus Müller | I'm removing the "New question" from your post. Please ask it in a new question post, if you want to ask it! | |
| Mar 1, 2024 at 9:24 | comment | added | Marcus Müller | Please don't ask new questions in an existing question that you've already gotten answers to. Instead, open a new question. | |
| Mar 1, 2024 at 8:06 | history | edited | Joshua Walker | CC BY-SA 4.0 | A new question that helps narrow a potential answer. |
| Mar 1, 2024 at 5:41 | history | became hot network question | |||
| Feb 29, 2024 at 23:04 | comment | added | Marcus Müller | If I remember the math for 64QAM and larger: Less, actually, even if you're smarter than a triangular lattice, but try to optimize the actual positions of 16 points with a constant average power constraint. But: 10% is a lot, in terms of modern channel coder performance (for fixed word lengths)! | |
| Feb 29, 2024 at 22:52 | comment | added | Kuba hasn't forgotten Monica | @MarcusMüller I'll have to work the numbers for that, because my gut feel is that the difference isn't as dramatic as it may seem. In the ballpark of 10% maybe? | |
| Feb 29, 2024 at 22:49 | comment | added | Marcus Müller | @Kubahasn'tforgottenMonica you're right, but Joshua is also right: packing the same number of points denser, or putting more points in the same area, yields higher spectral efficiency, which, in the end, is what we communications engineers sacrifice tofu kittens in obscure mathematical rituals for! | |
| Feb 29, 2024 at 22:24 | answer | added | Attie | timeline score: 11 | |
| Feb 29, 2024 at 21:57 | answer | added | Marcus Müller | timeline score: 22 | |
| Feb 29, 2024 at 21:53 | history | edited | ocrdu | CC BY-SA 4.0 | deleted 23 characters in body; edited tags; edited title |
| S Feb 29, 2024 at 21:41 | review | First questions | |||
| Feb 29, 2024 at 22:26 | |||||
| S Feb 29, 2024 at 21:41 | history | asked | Joshua Walker | CC BY-SA 4.0 |