I would be interested in some links about Airgo's MIMO implementation if you have them.
> -----Original Message----- > From: Jim Thompson [mailto:[EMAIL PROTECTED] > Sent: Wednesday, November 10, 2004 2:13 AM > To: [EMAIL PROTECTED] > Subject: Re: [SOCALWUG] Parkervision cards > > no, Parkervision's D2D is basically a super direct-conversion > radio and > over-sampling. At least, thats the way I understand it. > > Airgo is MIMO. Not a very good MIMO as these things go. Not, what > could we say, "respected" in > the MIMO community. > > Jim > > On Nov 9, 2004, at 10:33 PM, Humphrey Cheung wrote: > > > I'm not that technical in the specs or antenna > construction... so bear > > with > > me. > > > > Is there anything that suggests that Parkervision is MIMO?? Or is > > that our > > assumption? > > > > Humphrey > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > > Behalf > > Of Jim Thompson > > Sent: Tuesday, November 09, 2004 7:47 PM > > To: [EMAIL PROTECTED] > > Subject: Re: [SOCALWUG] Parkervision cards > > > > > > On Nov 9, 2004, at 1:21 PM, Richard B wrote: > > > >> Here's how... > >> > >> http://www.nwfusion.com/details/6830.html > >> > >> My first thought was "voodo" or something - but thinking > about it, it > >> still seems like some kind of magic! > > > > No, its just math. But that doesn't explain how they go 3X the > > distance to an ordinary 802.11x unit > > on the other end of the link. > > > > Maybe they use their 3 antennas to do a > combining/beam-forming thing. > > But, as I said, there are problems with that too. > > > >> The ability to turn multi-path into multi-good-path seems > >> kinda...weird. > > > > but thats how MIMO works. (Thus my "tell me about the > range increase > > in LOS conditions" trick question.) > > > > jim > > kd5fga > > > >> Richard, > >> NCT > >> N6GPP > >> > >> > >> > >> ----Original Message Follows---- > >> From: Jim Thompson <[EMAIL PROTECTED]> > >> Reply-To: [EMAIL PROTECTED] > >> To: [EMAIL PROTECTED] > >> Subject: Re: [SOCALWUG] Parkervision cards > >> Date: Tue, 9 Nov 2004 08:33:11 -1000 > >> > >> how? > >> > >> On Nov 9, 2004, at 7:45 AM, Shawn Rogers wrote: > >> > >>> Actually, at least with Airgo's MIMO technology > (Belkin/SOHOWare), a > >>> MIMO PCMCIA card will get better range than a standard > 802.11g card > >>> when connecting to a standard 802.11g AP. Same when > using a MIMO AP > >>> with a standard card vs a standard AP with a standard card. > >>> > >>>> -----Original Message----- > >>>> From: Jim Thompson [mailto:[EMAIL PROTECTED] > >>>> Sent: Monday, November 08, 2004 5:39 PM > >>>> To: [EMAIL PROTECTED] > >>>> Subject: Re: [SOCALWUG] Parkervision cards > >>>> > >>>> > >>>> On Nov 8, 2004, at 3:06 PM, Jerry Roy wrote: > >>>> > >>>>> Humphrey, > >>>>> > >>>>> This is the best card I have in my whole pile. Wouldn't > trade it > >>>>> for > >>>>> anything else. > >>>>> > >>>>> It blew me away. You have to combine with their AP/Router > >>>> to really see > >>>>> what it can do. Impressive. > >>>> > >>>> Of course you do. If the card sends MIMO to an > ordinary AP, the AP > >>>> will only 'see' (hear?) garbage, and visa versa. > >>>> > >>>> Now then, tell us how you get 3X range in a LOS > environment, and ... > >>>> "3X compared to what, and in what type of environment, and at > >>>> what throughput/rate?" > >>>> > >>>> Its MIMO, not Magic. > >>>> > >>>> Jim > >>>> > >>>>> Jerry > >>>>> > >>>>> -----Original Message----- > >>>>> From: [EMAIL PROTECTED] > >>>> [mailto:[EMAIL PROTECTED] On > >>>>> Behalf Of Humphrey Cheung > >>>>> Sent: Monday, November 08, 2004 11:01 AM > >>>>> To: [EMAIL PROTECTED] > >>>>> Subject: [SOCALWUG] Parkervision cards > >>>>> > >>>>> Hello, > >>>>> > >>>>> Anyone have experience with the Parkervision wifi cards? > >>>> They claim no > >>>>> deadspots in your house, etc etc. > >>>>> > >>>>> We thought it was voodoo, so we asked for a review > unit... I'll be > >>>>> damned I > >>>>> get triple the range. I'll try a wardrive today with the card. > >>>>> > >>>>> Humphrey Cheung > >>>>> Editor - Tomshardware > >>>> > >>>> > >>>> > >>>> --- > >>>> Incoming mail is certified Virus Free. > >>>> Checked by AVG anti-virus system (http://www.grisoft.com). > >>>> Version: 6.0.784 / Virus Database: 530 - Release Date: 10/27/2004 > >>>> > >>>> > >>> > >>> --- > >>> Outgoing mail is certified Virus Free. > >>> Checked by AVG anti-virus system (http://www.grisoft.com). > >>> Version: 6.0.784 / Virus Database: 530 - Release Date: 10/27/2004 > >>> > >> > > > > --- > Incoming mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.784 / Virus Database: 530 - Release Date: 10/27/2004 > > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.784 / Virus Database: 530 - Release Date: 10/27/2004
