On Nov 23, 2007 5:52 AM, Bruno Randolf <bruno@xxxxxxxxxxxxx> wrote: > > hello! > > the next 3 patches contain fixes for the signal/noise level calibration and > reporting of ath5k. i split them up because i'm not 100% sure of the second > two. > > 1) fixes the reading of the noise floor register and puts it into one function. > > 2) also enables noise floor calibration for rf511x. > > 3) saves the read noise floor and exports signal/noise and "quality" to > mac80211/wext. > > i'm also not sure if what we call noise calibration in this case really is an > calibration or just a reading of the values? > > is ath5k_hw the right place to store the noise_floor? > > the values reported, especially the noise seems a bit high, it's around -77 in > the A bands and around -92 in G bands (thats with an AR5215/RF5111/2111), so we > might have some more tweaking to do. since i add the RSSI to get the signal > quality in dBm it seems a bit too high too. > > this comment from madwifi leads me to believe this is the correct thing to do: > > * rx_rssi is in units of dbm above the noise floor. This value > * is measured during the preamble and PLCP; i.e. with the initial > * 4us of detection. The noise floor is typically a consistent > * -96dBm absolute power in a 20MHz channel > > at least we have some values to play with now :) > > ah, and they are based on my last debugging and logging, patches (although > there are not huge dependencies). I should have read this first :), sorry I had missed it. Luis. - To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
