Does it do the same in 11bg mode? Does madwifi behave the same way?
Don't forget to include the MAC/radio chipset and revision details; those who "know" how the radios work will likely need that. Adrian On 17 March 2011 16:45, Alex <alfr...@gmail.com> wrote: > Hi, > > the last few days i've been experimenting with ath5k and its behaviour > under interference (through a jammer in a neighbour channel). > > I used a sender and a reveiver in IEEE 802.11a and in adhoc mode. I > collected SNR measurements in the receiver node. Whenever jammer was on, SNR > dropped at the receiver. > > I then used airmagnet to monitor the signal strength of the sender. > > Suprisingly i noticed that the tranmission power of the sender drops > frequently when jammer was on; therefore SNR at the receiver dropped because > the signal of the sender dropped and not because > noise was increased. > > Then i connected the sender and the receiver through an airlive AP. I > monitored the SNR at the receiver, capturing airlive's packets only. No SNR > drops when jammer was on. > > So i conlcude: > > 1) Ath5k's transmission power for some reason drops when interference is > present. > > 2) SNR does not drop in the presence of interference (when an AP with a > stable transmission power is used), meaning that the noise measured does not > include interference. > > Any comments are welcome. > > Alex > > _______________________________________________ > ath5k-devel mailing list > ath5k-devel@lists.ath5k.org > https://lists.ath5k.org/mailman/listinfo/ath5k-devel > >
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