Digital Standard 3GPP W-CDMA (FDD)
SMIQ
1125.5555.03
E-9
2.170
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