*Orthogonal Frequency Division Multiplexing* Commonly called 'OFDM'. Surf's Up Mike! Wax down your board and catch this latest Wave Function orthogonality and give us the MIT view on whether Silicon Germanium "high-powered/technical expertise" chips full of algorithmics and frequency hunting killer app software will render cdmaOne, cdma2000, VW40 or even WWeb obsolete.
My competitive threats antennae in phased array are twitching.
I was talking to some registered 'technical expertise' today and they say they are mucking around with this stuff. It's a bit like being the Pope and popping into a confession chamber to hear some sinner plead his case and finding that the Vatican Cardinal's Club is checking out atheism as a more efficacious belief system than Catholicism. They went so far as to suggest that CDMA in general and Qualcomm's in particular is not necessarily the end stage of human evolution as far as wireless communications are concerned.
Apparently this OFDM is much the same as xADSL or whatever it's called in wires, where the telephone company in an attempt to fend off cable companies uses some tone system to send big data rates through twisted pairs. But they are fixin' to do it in wireless. Sure it's not happening tomorrow, but physicist types tend to think of launching rockets to the moon long before they actually do it. Sometimes the lead times aren't that long.
The speed at which wireless, chips and orthogonality are moving make me just a tad nervous. Maybe the ex-commie spy in charge of Telstra knows something we don't.
So, do you or anyone [Clark, Engineer, WHouston, Gregg, Klein ...] have the low down on how cdmaOne isn't going to end up on the horns of a dilemma like a 'Hole in Juan'?
Maybe this has all been dealt with, but I don't know, so I guess others won't.
So, anyone got the lowdown on OFDM?
Here's a url on it. A Web search did NOT come up empty handed.
Is Berkeley university for real? I heard only real reprobates went there.
diva.eecs.berkeley.edu
Also some suspiciously Nordic names:
sm.luth.se
This one looks like fun too:
bugs.wpi.edu:8080/EE535/hwk11cd95/witek/witek.html
If you go to the end of that one, you find this:
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K. S. Gilhousen, I. M. Jacobs, "On the Capacity of a Cellular CDMA System", IEEE Transactions on Vehicular Technology, May 1991
A. J. Viterbi and A. M. Viterbi, "Erlang Capacity of a Power Controlled CDMA System", IEEE J. on Selected Areas in Comm., vol. 11, no. 6, Aug. 1993
A. Salamasi and K. S. Gilhausen, "On the System Design Aspects of Code Division Multiple Access (CDMA) Applied to DIgital Cellular and Personal Communications Networks," Proc. 41st IEEE Veh. Technol Conf., St Louis, MO, pp. 57-62, May 1991
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Obviously the brains behind cdmaOne despite Ericy claims.
Mqurice
PS: For those worried about the Y2K bug, what about this:
hermit.org
It seems silly to think that a Y2K bug could get us. Usually it's the surprises which do the real damage, like a 1929 stockmarket crash or the AIDS virus appearing from nowhere. For Y2K to do real damage is like a slow motion march over the edge. Most people are going to "Halt! About face! Quick March!" Sure, the slow witted will be caught, but that's evolution. |
