WCDMA3G_BS_FixedRateSrc
Description: Downlink signal source for measurement channels
Library: 3GPPFDD 10-99, Base Station
Class: SDFWCDMA3G_BS_FixedRateSrc
Parameters
Name |
Description |
Default |
Unit |
Type |
Range |
|---|---|---|---|---|---|
DataType |
measurement channel type: DTCH_12_2_kbps, DTCH_64_kbps, DTCH_144_kbps, DTCH_384_kbps |
DTCH_12_2_kbps |
|
enum |
|
ScramblingCodeIndex |
scrambling code index |
0 |
|
int |
[0:8191] |
DPCHGainFactor |
gain factor for DPCH |
1.0 |
|
real |
[0.0, ∞) |
PCCPCHGainFactor |
gain factor for PCCPCH |
1.0 |
|
real |
[0.0, ∞) |
SCHGainFactor |
gain factor for SCH |
1.0 |
|
real |
[0.0, ∞) |
CPICHGainFactor |
gain factor for CPICH |
1.0 |
|
real |
[0.0, ∞) |
OCNS_UserNum |
simulated user number |
4 |
|
int |
[0:4] |
SF1 |
spreading factor for user1: SF1_4 , SF1_8 , SF1_16, SF1_32, SF1_64, SF1_128, SF1_256, SF1_512 |
SF1_256 |
|
enum |
|
SF2 |
spreading factor for user2: SF2_4 , SF2_8 , SF2_16, SF2_32, SF2_64, SF2_128, SF2_256, SF2_512 |
SF2_256 |
|
enum |
|
SF3 |
spreading factor for user3: SF3_4 , SF3_8 , SF3_16, SF3_32, SF3_64, SF3_128, SF3_256, SF3_512 |
SF3_256 |
|
enum |
|
SF4 |
spreading factor for user4: SF4_4 , SF4_8 , SF4_16, SF4_32, SF4_64, SF4_128, SF4_256, SF4_512 |
SF4_256 |
|
enum |
|
OCNS_GainFactors |
gain factors for OCNS users |
1.0 1.0 1.0 1.0 |
|
real array |
[0.0, ∞) |
Pin Outputs
Pin |
Name |
Description |
Signal Type |
|---|---|---|---|
1 |
Out |
output data |
complex |
2 |
DPCHOut |
output DPCH data |
complex |
3 |
TFMax |
Ouput TFMax |
int |
4 |
Ref_DataSrc1 |
reference data bits from source1 |
int |
5 |
Ref_DataSrc2 |
reference data bits from source2 |
int |
6 |
CoderOutput1 |
coder output data bits from TrCH1 |
int |
7 |
CoderOutput2 |
Coder output data bits from TrCH2 |
int |
8 |
DPCHData |
output bits for DPCH data fields |
int |
Notes/Equations
- This subnetwork model is used to provide signal source for the reference measurement channels 12.2/64/144/384 kbps [1] of the base station in a downlink.
The schematic for this subnetwork is shown in the following figure. It includes the data source for measurement transport channel, channel coding, transport channel multiplexing, physical channel mapping, spreading and scrambling for DPCH (dedicated physical channel), common control channels including PCCPCH (primary common control channel), SCH (synchronization channel, primary and secondary), CPICH (common pilot channel), and the OCNS (orthogonal channel noise simulator) that can simulate up to four users (orthogonal code channels).
This subnetwork model outputs the combined complex symbols from pin out and the DPCH only complex symbol from DPCHOut in chips, and outputs TFMax once every 10 msec. The reference data source is output from Ref_DataSrc1/Ref_DataSrc2 every transport block according to the TTI setting of each transport channel. The results for channel coding are output from CoderOutput1/ CoderOutput2 for measurement of BER (bit error rate) before channel coding in coding frames or blocks. The DPCH data bits are output from DPCHData for physical channel BER measurement in radio frames (15 slots).
WCDMA3G_BS_FixedRateSrc Schematic
References
- 3GPP Technical Specification TS 25.101 V3.1.0 "UE Radio transmission and Reception FDD," December 1999.
- 3GPP Technical Specification TS 34.121 V3.0.0 "Terminal conformance Specification: Radio transmission and reception (FDD)," March 2000.