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To: Ruffian who wrote (53452)12/10/1999 1:49:00 PM
From: Jim Lurgio  Respond to of 152472
 
It's about time. More next week.



To: Ruffian who wrote (53452)12/10/1999 1:59:00 PM
From: S100  Respond to of 152472
 
InterDigital, a firm which was primarily in the military electronics fields, has also proposed a Wideband CDMA system based on the inventions of Prof. Donald Schilling. Although they have presented their technical proposals at various standards meetings, they appear to be stalled by lack of capital and there is no announced delivery date for a product. Their system uses approximately a 4 MHz PRBS spreading code, and is consequently much wider bandwidth than IS-95. They also have the problem noted regarding pre-existing microwave signals in the middle of their proposed band.
Several 3G system proposals involve CDMA at approximately a 5 MHz chip rate. There are also some TDMA 3G proposals as well, so there is not yet a single accepted third generation technology for cellular and PCS.
PCS-Primeco started commercial 1.9GHz CDMA PCS service in 14 cities during November, 1996. Limited commercial use of CDMA on the 800 MHz band started in several cities in early 1997.

This is from
seas.smu.edu

Not sure if there are restrictions on posting this but it is from an URL that is open to anyone. Lots of Info on this site.