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802.11b/g Tx Power - RF Cafe Forums
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| scylding
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Post subject: 802.11b/g Tx Power
Posted: Thu Aug 23, 2007 4:56 pm
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Joined: Thu Aug 23, 2007
4:27 pm
Posts: 2
Location: Wichita KS
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I was of the understanding that a wireless b/g card
will initially transmit at full power (100mW) when
initiating a link with an access point and then
back off stepwise to the minimum power required
for the link. I.e., if the signal was good and clean
between AP and card, both parties would sense this
and step down their Tx power to something quite
a bit lower than 100mW.
I've done some searching,
but I can't find anything explaining such a physical
layer mechanism for b/g.
Am I mistaken?
Thanks in advance.
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nubbage |
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Post subject:
Posted: Mon Sep 10, 2007 8:52 am
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| General |
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Joined: Fri Feb 17, 2006
12:07 pm
Posts: 304
Location: London UK
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The lowest level I have seen reference to is 1 mW
However, I know not what the other steps might
be.
A wild guess: 10dB
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scylding |
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Post subject:
Posted: Mon Sep 10, 2007 9:07 am
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Joined: Thu Aug 23, 2007
4:27 pm
Posts: 2
Location: Wichita KS
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Thanks for your help. It seems that there is no
tx power control in b/g other than what is set by
the user through the device driver.
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Roi |
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Post subject:
Posted: Sat Sep 27, 2008 2:30 pm
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Joined: Sat Sep 27, 2008
2:07 pm
Posts: 1 |
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The 802.11 spec has many chapters. Some deal with
TX power control mechanisms. If I recall correctly
the 11k or 11h have what you look for.
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Posted 11/12/2012
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