资料介绍
cdma 权威教程CDMA 101
Scott Baxter
CDMA 101 Outline
CDMA
Basics
N Multiple
Access Technology Survey N CDMA coding principles N Spread Spectrum principles N Forward and Reverse Channel Structure
Nortel
N MTX
CDMA System Architecture
BSC BSM BTS
CDMA
Details and Operation
N Power
Control N Handoff mechanics N Optimization concepts
CDMA Basics
Multiple Access Technologies
FDMA
Power
FDMA (example: AMPS)
Frequency Division Multiple Access N each user has a private frequency
Tim
e
Fr
e
e qu
nc
y
TDMA
Power
Tim
TDMA (examples: IS-54/136, GSM)
Time Division Multiple Access N each user has a private time on a private frequency
e
Fre
q
n ue
cy
CDMA (IS-95, J-Std. 008)
Code Division Multiple Access N users co-mingle in time and frequency but each user has a private code
CD
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