* Obtaining channel measurements from current chipsets
@ 2011-10-21 14:33 Till Wollenberg
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From: Till Wollenberg @ 2011-10-21 14:33 UTC (permalink / raw)
To: linux-wireless
Hi!
I'm very interested in obtaining channel measurements from current
802.11a/g/n chipsets. I know that there are indicators for signal
strength, noise floor, RSSI etc., but I'd like to get more fine-grained
measurements such as magnitude/phase of the OFDM sub-carriers.
Such information is also needed for the (optional) 802.11n "channel
state information" feature, so I suppose that the vendors include
support for it in their chipsets.
Can someone give me a hint where to look at? So far I found that
other people are interested as well [1], but I did not find any
hints in the source code of the wireless drivers or any public
available spec. [2] shows how it could look like, but unfortunately
it depends mainly on modifications to the binary-only NIC firmware.
Best Regards
Till
[1] http://www.mail-archive.com/ath9k-devel@lists.ath9k.org/msg03875.html
[2] http://dhalperi.github.com/linux-80211n-csitool/
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