Terayon - S CDMA player (TERN) Message Board

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Technology Stocks : Terayon - S CDMA player (TERN)

TERN 26.31

+0.8%

Nov 21 9:30 AM EST

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To: Dennis O'Bell who wrote (256)	1/29/2000 7:46:00 PM
From: Bernard Levy	Read Replies (1) of 1658

Hi Dennis: Here is some (dated) information on the S-DMT proposal. It was developed by Krista Jacobsen, an engineer at Amati communications (now part of TXN), and a former PhD student of John Cioffi at Stanford. Jacobsen, Bingham and Cioffi presented a paper entitled ``Synchronized DMT for multipoint to point communications on HFC networks' at the IEEE Globecom 95. Unfortunately Amati and TXN focused on DSL technology, and ultimately it was a small company called Ultracom which pushed S-DMT. Its web site is still up: ultracominc.com However, the company has probably gone under. For detailed comparisons of QAM against S-CDMA and S-DMT, you may wish to look at: cedmagazine.com cedmagazine.com cedmagazine.com When the Hi-PHY standard was discussed, Broadcom was lined up behind QAM, TERN behind S-CDMA, and S-DMT lacked a truly strong sponsor. My cynical view is that BRCM made sure that the truly threatening technical option was killed, which guaranteed its dominance of the cable modem chip business for a long time. Best regards, Bernard Levy PS: S-DMT has of course been selected by the ITU for VDSL. The recent book by John Bingham on ADSL, VDSL and multicarrier modulation covers the technology in a DSL context.

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