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Technology Stocks : LAST MILE TECHNOLOGIES - Let's Discuss Them Here -- Ignore unavailable to you. Want to Upgrade?

To: MikeM54321 who wrote (9308)	11/26/2000 1:29:28 PM
From: Peter Ecclesine	Respond to of 12823

Hi Mike, W-OFDM is a trademark, not a technical term. Code based-OFDM as product dates back to DVB in the early '90s. It is a generic term, not a specific implementation. Vector based-OFDM promoted by Cisco in www.bwif.org is currently in MMDS and soon U-NII bands, but could be in any band. xOFDM includes Multiple In, Multiple Out (multiple antenna) designs. There are about forty years of developments in OFDM, and the flavors continue to evolve. PAN-LAN-WAN. V-OFDM into a LAN? a PAN? ;-) petere

To: MikeM54321 who wrote (9308)	11/26/2000 2:59:42 PM
From: Bernard Levy	Read Replies (2) \| Respond to of 12823

Hi Mike: I am sure Wi-Lan supporters will challenge me, but it is not obvious that their patents reach anywhere as far as they claim. Remember that OFDM was in existence for a long time (25 years or so) before Wi-Lan came along. This is also true of coded-OFDM, which came along in the 1980s. It is perhaps possible that there is a detail in Radiata's implementation about which Wi-Lan feels that it has a claim, but any such claim would be narrow and probably highly debatable. Also, OFDM is just a form of multicarrier modulation for which TXN has large IP claims through is acquisition of Amati, the company that pioneered DMT-based DSL. Best regards, Bernard Levy

To: MikeM54321 who wrote (9308)	11/27/2000 12:59:02 AM
From: axial	Read Replies (1) \| Respond to of 12823

Hi, Mike - There is much at dispute in terminologies here. Peter's perception of W-OFDM as a trademark, as opposed to a patented technology, is a reflection of the adversarial position. It is neither wrong nor right, but is in dispute: it will be settled in court. His characterization cannot be taken as a fact, until the matter is resolved in law. In fairness, I should point out that Wi-LAN's position is different than Cisco's/Clarity's/Radiata's/Peter's. Wi-LAN claims that W-OFDM is the term describing a patented technology: "Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum". Regards, Jim