WCDMA0604講義Concepts of CDMA
Agenda
CDMA Concepts Key Technologies Code used in WCDMA Key call process UE measurement
Cellular Access Methods
Power Time
Time Power
FDMA
Power Time
Frequency
Frequency
CDMA
TDMA
Frequency
CDMA is Also Full Duplex
Amplitude
US Cellular Channel 384
Reverse Link Forward Link
AMPS
45 MHz Frequency 836.52 MHz Amplitude Reverse Link Forward Link 881.52 MHz
FDD WCDMA
1920 MHz
190 MHz Frequency 2110 MHz
Cellular Frequency Reuse Patterns
1 2 6 5 7 FDMA Reuse 4 6 3 2 1 1 1
1 1 1 1 1 CDMA Reuse 1
CDMA Terms & Definitions
Symbol
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