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Technology Stocks : The New Qualcomm - a S&P500 company -- Ignore unavailable to you. Want to Upgrade?

To: Boplicity who wrote (2702)	10/26/1999 10:27:00 AM
From: quidditch	Read Replies (1) \| Respond to of 13582

Best if Clark, engineer, Bux or Vman tackle that.eom

To: Boplicity who wrote (2702)	10/26/1999 12:55:00 PM
From: wonk	Read Replies (1) \| Respond to of 13582

...What would be the best technical solution for point-point broadband wireless access? CDMA shines in mobile applications primarily due to one, and only 1 property - interference averaging. In fixed, i.e., point to point or point to multipoint applications, CDMA's bits per hertz efficiency is too low. Choosing CDMA in a fixed system gives away payload capacity in order to simplify interference management. However, interference management in a fixed system is relatively straightforward to deal with via highly directional antennas and prudent system planning. The one attribute of CDMA which is attractive in a fixed system is privacy and security. The inherent inability to eavesdrop on the transmission mitigates much of the security concerns regarding the use of wireless for commercial applications. If VODFM can deliver the bit payload they are claiming, which remains to be demonstrated, it would be the superior system. Note however, that other modulation techniques achieve similar capacities. The real sizzle (not yet steak) of VOFDM is the claim that it eliminates - or at least greatly mitigates - line-of-sight issues. ww