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Technology Stocks : The New Qualcomm - a S&P500 company -- Ignore unavailable to you. Want to Upgrade?

To: Bux who wrote (5542)	1/22/2000 12:28:00 AM
From: S100	Read Replies (1) \| Respond to of 13582

From the Book IS-95 CDMA and cdma 2000 by Vijay Garg Table 15-10 Major Technical Difference between cdma2000 and W-CDMA (page 398) CDMA2000 W-CDMA Core Network ANSI-41 GSM MAP Chip Rate 3.6864 Mcps 4.096Mcps(DOCOMO) 3.84 Mcps (UMTS) Synchronized BS Yes No/yes (optional) Frame Length 20 ms 10 ms Multicarrier Spreading Option YES NO Voice coder EVRC New Overhead Low (because of shared High (because of nonshared pilot Pilot Code Channel) code channel) Many pages of text explaining this, it seems, at first glance, that cdma2000 Phase one is 1.25 MHz wide( also known as 1xRTT), Phase 2 is 5 MHz wide(also known as 3xRTT). Quick cut of the supporting text--- By migrating from IS-95 CDMA air interface to 1xRTT, operators reap twofold increase in radio capacity and up to 144 kbps of packet data. Phase two will support all channel sizes (6x,9x and 12x).