WCDMA3G_BS_VariableRateSrc
Description: Downlink signal source for variable-rate source
Library: 3GPPFDD 10-99, Base Station
Class: SDFWCDMA3G_BS_VariableRateSrc
Parameters
Name |
Description |
Default |
Unit |
Type |
Range |
|---|---|---|---|---|---|
DataType |
information rate type: INFO_8_kbps, INFO_16_kbps, INFO_32_kbps, INFO_64_kbps, INFO_128_kbps, INFO_256_kbps, INFO_512_kbps |
INFO_8_kbps |
|
enum |
|
TTI |
transmission time interval: TTI_10ms, TTI_20ms, TTI_40ms, TTI_80ms |
TTI_10ms |
|
enum |
|
VariableRate |
indicate presence of variable rates: Yes, No |
Yes |
|
enum |
|
DL_PhyCHType |
downlink physical channel type: DPCH_15kbps_TF0_T2_P4, DPCH_15kbps_TF2_T2_P4, DPCH_30kbps_TF0_T2_P2, DPCH_30kbps_TF2_T2_P2, DPCH_30kbps_TF0_T2_P4, DPCH_30kbps_TF2_T2_P4, DPCH_30kbps_TF0_T2_P8, DPCH_30kbps_TF2_T2_P8, DPCH_60kbps_TF0_T2_P4, DPCH_60kbps_TF2_T2_P4, DPCH_60kbps_TF0_T2_P8, DPCH_60kbps_TF2_T2_P8, DPCH_120kbps_TF8_T4_P8, DPCH_120kbps_TF0_T4_P8, DPCH_240kbps_TF8_T4_P8, DPCH_240kbps_TF0_T4_P8, DPCH_480kbps_TF8_T8_P16, DPCH_480kbps_TF0_T8_P16, DPCH_960kbps_TF8_T8_P16, DPCH_960kbps_TF0_T8_P16, DPCH_1920kbps_TF8_T8_P16, DPCH_1920kbps_TF0_T8_P16 |
DPCH_30kbps_TF2_T2_P8 |
|
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, ∞) |
† where
TFn= number of transmit format indicator bits
Tn= number of transmit power control bits
Pn= number of pilot bits
Fn= number of feedback indicator bits
Pin Outputs
Pin |
Name |
Description |
Signal Type |
|---|---|---|---|
1 |
Out |
output data |
complex |
2 |
DPCHOut |
output DPCH data |
complex |
3 |
TFMax |
ouput TFMax value |
int |
4 |
Ref_DataSrc |
reference data bits from source |
int |
5 |
CoderOutput |
coder output data bits from TrCH |
int |
6 |
DPCHData |
output bits for DPCH data fields |
int |
Notes/Equations
- This subnetwork model is used to provide a signal source for the variable-rate source ranging from 8 to 512 kbps 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 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_DataSrc every transport block according to the TTI setting of each transport channel. The results for channel coding are output from CoderOutput 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_VariableRateSrc Schematic
References
- 3GPP Technical Specification TS 25.104 V3.2.0 "UTRA(BS) FDD: Radio transmission and Reception," March 2000.
- 3GPP Technical Specification TS 25.141 V3.0.0 "Base station conformance testing (FDD)," December 1999.