Chip Rates, Code Layers, and Symbol Rates
To successfully demodulate W-CDMA signals, the analyzer’s chip rate must match
the chip rate of your W-CDMA signal. The chip rate determines which code layer is
assigned to each symbol rate , as shown in the following table.
Note Selecting the ch1 + j*ch2 receiver (the I component is input on channel 1; the Q
component on channel 2) doubles the maximum chip rate .
Code Layer
(code class)
Symbol Rate (kSymbols/second)
3.84 MHz
Chip Rate
††
4 MHz
Chip Rate
8 MHz
Chip Rate
16 MHz
Chip Rate
C0
C1 2048 † 4096 †
C2 960 †† 1024 2048 † 4096 †
C3 480 †† 512 1024 2048 †
C4 240 †† 256 512 1024
C5 120 †† 128 256 512
C6 60 †† 64 128 256
C7 30 †† 32 64 128
C8 15 †† 16 32 64
C9 7.5 †† 8 † 16 32
C10 8 † 16
C11 8 †
† These rates are only available for ARIB 1.0-1.2 W-CDMA signals.
†† These rates are only available for 3GPP 1999 forward link W-CDMA signals.
Wideband CDMA Concepts (Options B73, B79, and 080)
24 - 8
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