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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
  1. 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
  1. 3GPP Technical Specification TS 25.104 V3.2.0 "UTRA(BS) FDD: Radio transmission and Reception," March 2000.
  2. 3GPP Technical Specification TS 25.141 V3.0.0 "Base station conformance testing (FDD)," December 1999.
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