WCDMA3G_BS_VariableRateReceiver
Description: Uplink receiver for variable-rate source
Library: 3GPPFDD 10-99, Base Station
Class: SDFWCDMA3G_BS_VariableRateReceiver
Parameters
Name |
Description |
Default |
Symbol |
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_8_kbps |
|
|
enum |
|
TTI |
transmission time interval: TTI_10ms, TTI_20ms, TTI_40ms, TTI_80ms |
TTI_10ms |
|
|
enum |
|
UL_DPCCHType |
uplink dedicated physical control channel: DPCCH_15kbps_P6_TF2_F0_T2, DPCCH_15kbps_P8_TF0_F0_T2, DPCCH_15kbps_P5_TF2_F1_T2, DPCCH_15kbps_P7_TF0_F1_T2, DPCCH_15kbps_P6_TF0_F2_T2, DPCCH_15kbps_P5_TF2_F2_T1 |
DPCCH_15kbps_P6_TF2_F0_T2 |
|
|
enum |
† |
ScramblingCodeType |
type of scrambling code: Long_Scrambling_Code, Short_Scrambling_Code |
Long_Scrambling_Code |
|
|
enum |
|
ScramblingCodeIndex |
scrambling code index |
0 |
|
|
int |
[0:16777215] |
SampleRate |
number of samples per chip |
8 |
S |
|
int |
[1:32] |
PathNum |
number of paths |
1 |
L |
|
int |
[1:16] |
MaxDelay |
maximum path delay in terms of chips |
20 |
D |
|
int |
[1:1280] |
SearchDir |
search path direction based on current timing: Forward, Backward, Bidirection |
Backward |
|
|
enum |
|
EstMethod |
channel estimation method: Averaging, Interpolation, WMSA, NoEst |
Interpolation |
|
|
enum |
|
† 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 Inputs
Pin |
Name |
Description |
Signal Type |
|---|---|---|---|
1 |
In |
input data |
complex |
2 |
TFMaxIn |
input TFMax value |
int |
3 |
RefDataIn |
reference data bits from source |
int |
4 |
CoderOutput |
coder output data bits from TrCH |
int |
5 |
DPDCHDataIn |
input bits for DPDCH data fields |
int |
Pin Outputs
Pin |
Name |
Description |
Signal Type |
|---|---|---|---|
6 |
Out |
output data |
int |
7 |
TrCHBER |
output BER value for transport channel |
real |
8 |
TrCHBLER |
output BLER value for transport channel |
real |
9 |
PhyCHBER_before_Decoding |
output BER value before decoding |
real |
10 |
PhyCHBER |
output physical channel BER value |
real |
Notes/Equations
- This subnetwork model is used to demodulate and decode the input complex symbol in order to calculate the physical channel BER (bit error rate), transport channel BER/ BLER (block error rate) for the variable-rate data source ranging from 8 to 256 kbps of the base station in an uplink.
The schematic for this subnetwork is shown in the following figure. It includes the Rake receiver, spreading code and scrambling code generation, transport channel de-multiplexing, channel decoding, and BER measurements.
This subnetwork model takes the input symbol from In in chips, reference source data from RefDataIn in transport blocks, reference DPDCH data from DPDCHDataIn in radio frames, TFMax value from TFMaxIn every 10 msec. It outputs the physical channel BER once every radio frame (15 slots) and outputs data in transport blocks, outputs TrCHBER/TrCHBLER once every transport block according to the TTI (transmission time interval) of each transport channel; PhyCHBER_before_Decoding is used to measure the BER before channel coding every coding block.
WCDMA3G_BS_VariableRateReceiver 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.