On 25/08/11 10:43, Marko Vojinovic wrote:
> On Thursday 25 August 2011 13:24:00 Bob Goodwin wrote:
>> I suspect that receiver quality is a bigger factor that transmitter
>> power output. I am presently using a Linksys E3000 running DD-WRT which
>> displays some receiving data [SNR, signal to noise ratio]. I have no way
>> of verifying these numbers but have no reason to doubt them either. I
>> have also noticed that signal quality affects the data rates. Good
>> signal, faster transfers ...
>>
>>> Wireless Nodes
>>>
>>> Clients
>>> MAC Address Interface Uptime TX Rate RX Rate
>>> Signal
>>> Noise SNR Signal Quality
>>> 00:1E:52:86:4B:C3 eth1 N/A N/A N/A -42 -88
>>> 46
>>> 64%
>>> B8:FF:61:35:AC:CC eth1 N/A N/A N/A -52 -88
>>> 36
>>> 52%
>>> 00:1F:1F:A5:D6:84 eth1 N/A N/A N/A -62 -88
>>> 26
>>> 39%
>>> 00:AA:BB:CC:DD:10 eth1 N/A N/A N/A -67 -88
>>> 21
>>> 33%
>>> 0C:EE:E6:84:F3:A9 eth1 N/A N/A N/A -55 -88
>>> 33
>>> 48%
>>> 00:11:85:8C:CC:25 eth1 N/A N/A N/A -61 -88
>>> 27
>>> 40%
>>> 00:02:6F:9B:BA:C4 eth1 N/A N/A N/A -42 -88
>>> 46
>>> 64%
>>> 00:1D:73:C9:11:94 eth1 N/A N/A N/A -57 -88
>>> 31
>>> 45%
> I'm confused --- there is the "Signal" column, the "Noise" column, and the
> "SNR" column which apparently has nothing to do with the ratio between signal
> and noise. In addition, how is the "Signal Quality" estimated?
>
> Little help, please? :-)
>
> Best, :-)
> Marko
>
I'm sorry, the lines were "wrapped" messing up the formatting.
There are four numbers of interest, Signal, Noise, SNR, and
Signal Quality.
Signal quality is expressed as a percentage. For instance the
first line shows the series
-42 -88 46 64%
The received signal level -42 dbm
The receiver noise level -88 dbm
Signal to noise ratio 46
Signal quality 64%
I did not create the system, I am merely a user but that's is
how I interpret it.
Bob
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