Digital Standard 3GPP W-CDMA (FDD) SMIQ
1125.5555.03 E-92.170
Table 2-18 Parameters of W-CDMA system
Chip rate 3.84 Mcps
Channel types Downlink :
• Primary Common Pilot Channel (P-CPICH)
• Secondary Common Pilot Channel (S-CPICH)
• Primary Sync Channel (P-SCH)
• Secondary Sync Channel (S-SCH)
• Primary Common Control Phys. Channel (P-CCPCH)
• Secondary Common Control Phys. Channel (S-CCPCH)
• Page Indication Channel (PICH)
• Acquisition Indication Channel (AICH)
• Access Preamble Acquisition Indication Channel (AP-AICH)
• Phys. Downlink Shared Channel (PDSCH)
• Dedicated Physical Control Channel (DL-DPCCH)
• Dedicated Phys. Channel (DPCH)
Uplink :
• Phys. Random Access Channel (PRACH)
• Phys. Common Packet Channel (PCPCH)
• Dedicated Physical Control Channel (DPCCH)
• Dedicated Physical Data Channel (DPDCH)
Symbol rates 7.5 ksps, 15 ksps, 30 ksps to 960 ksps depending on type of
channel
Number of channels 4 base stations in the downlink with up to 128 DPCHs and 11
special channels each
4 mobile stations in the uplink either with PRACH or PCPCH or
DPDCH and up to 6 DPDCHs.
Frame structure Timeslot: 0.667 ms,
Radio Frame: 15 timeslots = 10 ms, the structure of the frames
depends on the symbol rate.
Scrambling code Downlink: 18 bit M sequence
Uplink: 25 bit M sequence in long mode and 8 bit M sequence in
short mode
Channelization code for DPCH, DPDCH and DPCCH “Orthogonal Variable Spreading Factor Code (OVSF)“
Orthogonal matrix of chip rate/symbol rate
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