WCDMA3G_BS_FixedRateReceiver
Description: Uplink receiver for measurement channels
Library: 3GPPFDD 10-99, Base Station
Class: SDFWCDMA3G_BS_FixedRateReceiver
Parameters
Name |
Description |
Default |
Symbol |
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 |
|
UL_DPCCHType |
uplink dedicated physical control channel type: 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 |
RefDataIn1 |
reference data bits from source1 |
int |
4 |
RefDataIn2 |
reference data bits from source2 |
int |
5 |
DPDCHDataIn |
input bits for DPDCH data fields |
int |
Pin Outputs
Pin |
Name |
Description |
Signal Type |
|---|---|---|---|
6 |
DCCH_Out |
output data for DCCH |
int |
7 |
DCCH_BER |
output BER value for DCCH |
real |
8 |
DCCH_BLER |
output BLER value for DCCH |
real |
9 |
DTCH_Out |
output data for DTCH |
int |
10 |
DTCH_BER |
output BER value for DTCH |
real |
11 |
DTCH_BLER |
output BLER value for DTCH |
real |
12 |
PhyCHBER |
output physical channel BER value |
real |
Notes/Equations
- This subnetwork model is used to demodulate and decode the input complex symbol to calculate the physical channel BER (bit error rate), transport channel BER/BLER (block error rate) for DTCH (dedicated transport channel) and DCCH (dedicated control channel) for reference measurement channels 12.2/64/144/384 kbps [1] of the base station in an uplink.
The schematic for this subnetwork is shown in WCDMA3G_BS_FixedRateReceiver.gif. 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 pin In in chips, reference source data from pins RefDataSrc1 and RefDataSrc2 in transport blocks, reference DPDCH data from pin DPDCHDataIn in radio frames, TFMax value from pin TFMaxIn every 10 msec. It outputs the physical channel BER once every radio frame (15 slots), outputs data for DCCH/DTCH in transport blocks, and outputs DCCH_BER/DCCH_BLER and DTCH_BER/ DTCH_BLER once every transport block according to the TTI (transmit time interval) of each transport channel.
WCDMA3G_BS_FixedRateReceiver 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.