Broadband Wireless Access [WCII, NXLK, WCOM, satellite..] Message Board

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Technology Stocks : Broadband Wireless Access [WCII, NXLK, WCOM, satellite..]

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To: Bernard Levy who wrote (132)	5/4/1999 12:20:00 PM
From: SteveG	of 1860

Hi Bernard- <..but isn't Videotron in the process of rolling out the 2-way MMDS equipment manufactured by CAMP?..> They just announced a contract - we'll see if the tech works and how quickly it is deployed. I know that CNCX currently resells the two-way Wavepath 5GHz university-related spectrum (in SF, that they bill as wireless DSL, I think because they use some FDM algorithms, presumably without SiGe - do you know anything about this?), but I understand this is a special case. <..The main problem for 2-way MMDS is dealing with a frequency reuse factor in the range of 4 to 7, and sectorizing cells to deal with this problem...> Is there any interference with MMDS (I think it is near-LOS at best) such that reuse is across a range and efficiency is more challenging than with PP or even PMP? <..It is easy to see that the development of a scalable architecture is a major hurdle...> Thanks for these insights. <..However all these options create difficult tradeoffs when trying to find a good system architecture...> Do they also use some form of CDMA then (in addition to FDMA)? As always, thanks for your high SNR contributions, Bernard.

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