I'm sure you have many successful deployments. I'm sure your products are all winners, and your shareholders think you walk the earth in peace.
I'm interested in where things fail(ed), and 'why'. Jim Patrick Leary writes: > Fair enough, so here is a list of a few of the areas where we tested and/or > have implemented OFDM in scaled deployments so far: > - extremely urban-type low building density of a major city in South America > - heavily foliated coastal hills, across bays, and urban settings in New > Zealand > - low mountains with heavy deciduous tree coverage in rural western Maryland > - coastal Southern California with little vegetation > - flat arid, with marginal density in the Texas Panhandle > - heavily foliated and urban landscapes in Hungary > - deep in the very heavy coniferous high mountains in rural British Columbia > in Canada > - an urban landscape in the Russian steps > > I'd say this is a fairly strong cross section of environments. Have any more > negatives you might like to guess about on things you have never seen? > > Patrick Leary > Alvarion > > -----Original Message----- > From: Jim Thompson [mailto:[EMAIL PROTECTED] > Sent: Friday, July 25, 2003 3:41 AM > To: Patrick Leary > Cc: 'Tim Pozar'; Ladjicke Diouf; [EMAIL PROTECTED]; > [EMAIL PROTECTED] > Subject: RE: [BAWUG] 802.11b Long Range non line of sight > > > > Empirical data can only demonstrate results in the environment you > studied. > > Proofs require mathematics. > > Patrick Leary writes: > > Tim, I am not sure if you are talking about OFDM or DSSS. With OFDM, you > > DON'T need LOS. Of course its not going to connect forever with NLOS, but > > for a few miles, it is a no brainer. We have ample empirical data that > > proves it. > > > > Patrick > > > > -----Original Message----- > > From: Tim Pozar [mailto:[EMAIL PROTECTED] > > Sent: Thursday, July 24, 2003 8:27 PM > > To: Ladjicke Diouf > > Cc: Patrick Leary; [EMAIL PROTECTED]; [EMAIL PROTECTED] > > Subject: Re: [BAWUG] 802.11b Long Range non line of sight > > > > > > On Thu, Jul 24, 2003 at 02:26:26PM -0700, Ladjicke Diouf wrote: > > > Can somebody shed some light on how OFDM helps NLOS, I thought it was > just > > > > > a coding scheme like DSSS for 802.11b > > > > You still need LOS. OFDM of DSSS will handle interference (ie. > > "smearing" ) of the signal better with the lower symbol rate. Things > > like multipath will be less of an issue. Still an issue, but less > > pronounced. > > > > Tim > > -- > > Snail: Tim Pozar / LNS / 1978 45th Ave / San Francisco CA 94116 / USA > > POTS: +1 415 665 3790 Radio: KC6GNJ / KAE6247 > > "Be who you are and say what you feel because the people who mind > > don't matter and the people who matter don't mind." - Dr. Seuss > > > > > > This mail passed through mail.alvarion.com > > > > > **************************************************************************** > > ******** > > This footnote confirms that this email message has been scanned by > > PineApp Mail-SeCure for the presence of malicious code, vandals & computer > > viruses. > > > **************************************************************************** > > ******** > > -- > > general wireless list, a bawug thing <http://www.bawug.org/> > > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless > > > > -- > "Speed, it seems to me, provides the one genuinely modern pleasure." > -- Aldous Huxley (1894 - 1963) > > > > This mail passed through mail.alvarion.com > > **************************************************************************** > ******** > This footnote confirms that this email message has been scanned by > PineApp Mail-SeCure for the presence of malicious code, vandals & computer > viruses. > **************************************************************************** > ******** > -- "Speed, it seems to me, provides the one genuinely modern pleasure." -- Aldous Huxley (1894 - 1963) -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
