#1659: Periodic Calibration must disable DMA engine during calibration
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Reporter: mtaylor | Owner: mtaylor
Type: defect | Status: new
Priority: major | Milestone:
Component: madwifi: driver | Version: trunk
Resolution: | Keywords:
Patch_attached: 0 |
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Comment (by mtaylor):
And here's the original message from Karol:
"Dear Mike,
I have been recently testing tpc feature of Madwifi on my wireless cards.
I think you are an expert in this area, thus I have a question for you.
The TPC works fine, but I have a two problems with it which I do not know
how to resolve.
1) After specifying the tx power over 63 mW its values falls down. I have
observed this effect on a three different cards. Please have a look at
attached figure "comparison-of-power-control.png". Do you know if this can
be disabled?
2) The cards often exhibit strange tx power drops. I have observed this
phenomenon in the following scenario with three nodes: A - receiver, B -
monitor, C - transmitter. As you can see in Figure "3nodes-5min.png",
every 1 sec there is drops of the tx power for a data frame, and every 30
sec there is a drop of tx power for an ack frame. Do you know what may be
causing this? (the antenna diversity and transmission rate were fixed
during this experiment).
Many thanks
Karol "
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Ticket URL: <http://madwifi.org/ticket/1659#comment:1>
madwifi.org <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity
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