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Technology Stocks : Terayon - S CDMA player (TERN) -- Ignore unavailable to you. Want to Upgrade?

To: Bernard Levy who wrote (251)	1/20/2000 6:55:00 PM
From: Dennis O'Bell	Respond to of 1658

Thinking this over a bit, I've probably underestimated the benefits accrued from the use of DMT in a cable modem. One would still need a fair amount of equalization, not as drastic as DSL, but enough to justify the DMT approach, and it's nice to be able to deal with narrow band interfering carriers. There are nonlinearities in cable that don't exist in DSL or wireless, but they should be mild enough for DMT to work quite well. I've seen some older standards on cable modem proposals in Europe with pretty dense costellations, these would also be sensitive to nonlinearities in the channel . A working DMT/OFDM modem is "une usine a gaz", that's for sure :-)