On 2011-04-28 11:36 AM, Andreas Hofmann wrote: > > Hello folks, > > I am currently running wireless video transmissions over RTP, using 2 > embedded linux devices with kernel 2.6.37 and AR9280 wireless-cards. The > link was not reliable enough and I found out that a small change to the > ratecontrol-algorithm improves the situation. Now I want to notice other > people, who might have the same problem and request for comments on > that change. > > I noticed that the connection was rather error-prone, when the slightest > change to the wireless-channel was made (e.g. waving around in the area > around the antennas) picture errors were becoming visible. Also tests > with iperf over UDP confirmed that the PER on the wireless link was > quite high (sometimes over 3%). You could try using minstrel_ht instead of the ath9k rate control. People have told me that it produces much lower PER, it might help for both performance and reliability of your video transmission.
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