> We've been finding the noise floor around -98 dBm these days, even in > the vicinity of the 2.4GHz death ray that we got the experimental > license for :) > > This noise floor is only a limiting factor if you use a transmission > method with no coding gain (certainly not the case with these 802.11 > systems). GPS is a prime example of a system that must operate below > the nominal noise floor.
Not only GPS :) For example 802.11b : Thermal noise: -100.6 dBm, 22MHz,50 Om, temperature +20C. SNR = -10.5 dB for [EMAIL PROTECTED] (broadband noise). Theoretical limit of [EMAIL PROTECTED] -> Rx_lim = -111.1 dBm !!! -Ivan > > Note also that unlicensed is very different from unregulated. One can > only the unlicensed bands with Part 15 certified equipment unless the > products fall under the 15.23 home-built devices exclusion. Any > prototype devices require experimental licenses. > > ==S > > ----- Original Message ----- > > Message: 6 > From: "Moebius" <[EMAIL PROTECTED]> > To: "'Tim Pozar'" <[EMAIL PROTECTED]>, "'Julian Bond'" <[EMAIL PROTECTED]> > Cc: <[EMAIL PROTECTED]> > Subject: RE: [BAWUG] Atheros announcement > Date: Mon, 15 Sep 2003 14:54:31 -0700 > > Too bad the noise floor in most parts the bay area is at around -95 -> > -85 these days... > > -- > general wireless list, a bawug thing <http://www.bawug.org/> > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
