9818246968
IS-95 cdmaOne (1/2)
Developed by Oualcomm
Operating in US and Korea sińce 1996.
DS-CDMA (Direct Sequence Codę Division
multiple Access) / FDD (Frequency Division
Duplex) technology
About two years to create the IS-95
specifications.
Frequency bands
- AMPS (824 - 894 MHz)
-PCS (1850-1990 MHz)
IS-95 cdmaOne (2/2)
• Carrier Spacing: 1.25 MHz
• Capacity: 3-6 times than that of TDMA, 10 times than that of AMPS. (4-5 times than that of GSM, 8 - 10 times than that of AMPS).
• Speech coding ratę: 13 or 8 kbps
• Roaming management standard:
EIA/TIA IS-41
• Service area: North America, South Korea, China
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