[opendtv] Re: F.C.C. Likely to Open Airwaves to Wireless
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Wed, 15 Sep 2010 07:37:45 -0400
At 9:47 PM -0400 9/14/10, Albert Manfredi wrote:
Not to forget that each WiFi channel is 20 MHz wide - the equivalent
of more than three adjacent TV channels. So honestly, I don't know
why the FCC hypes this white spaces idea so much. Long range,
perhaps, but you're only going to get very few WiFi networks in
those "white spaces," and each will only offer so much b/s of shared
capacity. You can't assume MIMO will work so well, when widely
distributed users will be sharing the channel.
Bert
What is to say the white spaces devices will need to use 20 MHz
channels? Seems to me that there is going to be a lot of
experimentation to see what works best. Rice Unversity just got a
large grant to enhance its campus networks using white space spectrum.
http://www.media.rice.edu/media/NewsBot.asp?MODE=VIEW&ID=14709
Looks like the next few years are going to move these new
technologies through the Field Testing phase, with the real
deployments coming around the middle of the decade.
Regards
Craig
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