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To: Dexter Lives On who wrote (123102)	8/12/2002 9:49:42 AM
From: Art Bechhoefer	Respond to of 152472

Rob, I note that the link you provided says that one of the features of the system is "time division duplexing," which suggests something based more on TDMA instead of CDMA. Art

To: Dexter Lives On who wrote (123102)	8/12/2002 2:11:17 PM
From: w0z	Respond to of 152472

Rob, thanks for the reference. I think the following is the key to reducing multipath problems: "Using sophisticated algorithms, narrow beams are formed at the base station for each active user" This means a very directive beam is formed using phased-array antennas which should work well for non-mobile signals...hence the focus on fixed wireless. I wonder however how well these beams would stay aligned over different timeframes (even fluttering leaves affects multipath for microwave signals). This system would not work at all for a mobile signal (due to the changing and unpredictable signal location) but it will be interesting to see how it works for fixed wireless. I still believe wireless has the potential to be one of the best solutions for broadband "last mile" access. When full 3G becomes available, the promised 2.4 Mbps rates could be a very viable alternative to DSL, cable, etc. Even 1X will be almost 3 times better than present dial-up connections.