Posted: Fri Jun 23, 2006 9:37 Post subject: What is Noise Reference?
In DD-WRT SP1, there is this Noise Reference at Wireless --> Advanced Settings with the default value of -98. Could someone tell me what is this please. I could not find any explaination in Wiki nor in the web GUI help. If I have -100 before SP1, does it mean I will lose 2db now if I leave it at -98?
What, it cannot measure noise?! That effecively mean that none of the values sayt anything anymore!
This may well mean that in a given situation, a signal of 30 is measured, but you also are in an environment that has background noise of 30dB, leaving you with no useable signal. Nevertheless ddwrt will say you have 30snr.
Or is signal as measured always what has remained over any given noise? _________________ If you use DD-WRT, you HAVE to make a donation! See this topic too: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=228
Joined: 06 Jun 2006 Posts: 7492 Location: Dresden, Germany
Posted: Fri Jun 23, 2006 16:19 Post subject:
wl noise does not return right values in ap mode _________________ "So you tried to use the computer and it started smoking? Sounds like a Mac to me.." - Louis Rossmann https://www.youtube.com/watch?v=eL_5YDRWqGE&t=60s
Ah, that post was not there when I hit submit, thanks.
That is right, I am in AP mode and that value cannot be true.
BS, am I correct in what I said before then, that the SNR is not real in any way, because you have no real noise measurement? _________________ If you use DD-WRT, you HAVE to make a donation! See this topic too: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=228
Joined: 06 Jun 2006 Posts: 7492 Location: Dresden, Germany
Posted: Fri Jun 23, 2006 16:25 Post subject:
right. thats why i introduced the noise reference. so you can choose out of your experience _________________ "So you tried to use the computer and it started smoking? Sounds like a Mac to me.." - Louis Rossmann https://www.youtube.com/watch?v=eL_5YDRWqGE&t=60s
Ok, but isn't -98 very, very low, a measurement you would only get in a very 'clean' radio environment, so that the SNR you will get when using this value is... "rather optimistic"?? _________________ If you use DD-WRT, you HAVE to make a donation! See this topic too: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=228
And noise is hte other way around you got little noise when you got -98 to -94 but in more long distanse projects there will be more noise and interference. so in your situation you got little noise
