The distance we are talking about is up to 2 kM for 60 GHz and up to 5 miles for 70-90 GHz. The beam is very narrow and say only 12 ft in diameter at receiver. More like laser than cb or FM. Bob Millr On 11/6/06, John Willkie <johnwillkie@xxxxxxxxxxxxx> wrote:
yeah, unlicensed spectrum is so much better than licensed (primary user) spectrum to send signals over distance. think cb versus FM radio. John Willkie -----Original Message----- >From: Bob Miller <robmxa@xxxxxxxxx> >Sent: Nov 1, 2006 1:34 PM >To: opendtv@xxxxxxxxxxxxx >Subject: [opendtv] Re: News: WirelessHD Consortium > >As far as I know that is all licensed spectrum, LMDS/MMDS, none of >which I own. Also had a lot of problems with LMDS spectrum years ago. >No, I like the very high directionality of this spectrum in the 60 GHz >and 80-90 GHz and I like the fact that 60 GHz is unlicensed and 80-90 >is minimally licensed. That is a fee for and quick registration of >only. > >Have no problem with IEEE 802.16 but I believe it is designed more for >a shared shotgun RF use and not for the rifle shot full duplex >multiple Gbps connections I am interested in. > >Bob Miller > >On 11/1/06, Manfredi, Albert E <albert.e.manfredi@xxxxxxxxxx> wrote: >> Bob Miller wrote: >> >> > Line of sight yes but I don't think bird fade is an >> > issue, more like window washer fade. The beam is >> > spread near the transmitter and receiver. At low >> > cost you could envision all nodes having multiple >> > transceivers with each being full duplex backups of >> > each other. A meshy redundant network >> >> Bob, I still don't understand what you are creating here. >> >> The article we're referring to talked about a 10 meter range system, for >> internal hookup of audio/video equipment where the video can be >> uncompressed. A wireless form of HDMI, if you will. That's why the >> comparison with UWB, which is intended for a similar mission, or maybe >> better characterized as "wireless USB." >> >> You seem to be adressing something else. If you are trying to use a 60 >> GHz carrier for a two-way last mile link, then what's wrong with the >> existing IEEE 802.16, MMDS/LMDS, which is already a standard that takes >> you all the way up to 66 GHz, and does so with any number of optional >> encapsulations (i.e. even ATM, if you like)? >> >> Bert >> >> >> ---------------------------------------------------------------------- >> You can UNSUBSCRIBE from the OpenDTV list in two ways: >> >> - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org >> >> - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line. >> >> > > >---------------------------------------------------------------------- >You can UNSUBSCRIBE from the OpenDTV list in two ways: > >- Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org > >- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line. > ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.
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