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3GPPFDD_DL_12_2



Description: 3GPP downlink reference measurement channel 12.2 kbps
Library: 3GPPFDD, Base Station
Class: SDF3GPPFDD_DL_12_2

Parameters

Name

Description

Default

Unit

Type

Range

SpecVersion

version of specifications: Version_03_00, Version_12_00, Version_03_02

Version_12_00

 

enum

 

DTCHDataPattern

DTCH source data pattern: DTCH_random, DTCH_PN9, DTCH_PN15, DTCH_bits_repeat, DTCH_user_file

DTCH_random

 

enum

 

DTCHRepBitValue

DTCH repeating data value

0xff

 

int

[0:255]

DTCHUserFileName

DTCH user-defined data file name

datafile.txt

 

filename

 

DCCHDataPattern

DCCH source data pattern: DCCH_random, DCCH_PN9, DCCH_PN15, DCCH_bits_repeat, DCCH_user_file

DCCH_random

 

enum

 

DCCHRepBitValue

DCCH repeating data value

0xff

 

int

[0:255]

DCCHUserFileName

DCCH user-defined data file name

datafile.txt

 

filename

 

TPCDataPattern

source data pattern: TPC_random, TPC_PN9, TPC_PN15, TPC_bits_repeat, TPC_user_file

TPC_random

 

enum

 

TPCRepBitValue

TPC repeating data value

0xff

 

int

[0:255]

TPCUserFileName

TPC user-defined data file name

datafile.txt

 

filename

 

SpreadCode

index of spread code

0

 

int

[0:127] for downlink 12.2kbps;
[0:31] for downlink 64kbps;
[0:15] for downlink 144kbps;
[0:7] for downlink 384kbps

ScrambleCode

index of scramble code

0

 

int

[0:512] for downlink;
[0:16777215] for uplink

ScrambleOffset

scramble offset in downlink channels

0

 

int

[0:15]

ScrambleType

scramble type: Normal, RightAlternate, LeftAlternate

Normal

 

enum

 

Pin Outputs

Pin

Name

Description

Signal Type

1

out

non STTD

complex

2

STTDout

STTD

complex

3

DTCH

DTCH data

int

4

DCCH

DCCH data

int

Notes/Equations
  1. This subnetwork model is used to generate baseband signal of 12.2 kbps DL reference measurement channel. The schematic for this subnetwork is shown in the following figure.

    3GPPFDD_DL_12_2 Schematic
  2. Parameters for the 12.2 kbps DL reference measurement channel are specified in the following tables.
    DL Reference Measurement Channel, Physical Parameters (12.2 kbps)

    Parameter

    Unit

    Level

    Information bit rate

    kbps

    12.2

    DPCH

    ksps

    30

    Slot Format #i

     

    11

    TFCI

     

    On

    Power offsets PO1, PO2 and PO3

    dB

    0

    Puncturing

    %

    14,7

    DL Reference Measurement Channel, Transport Channel Parameters (12.2 kbps)

    Parameter

    DTCH

    DCCH

    Transport Channel Number

    1

    2

    Transport Block Size

    244

    100

    Transport Block Set Size

    244

    100

    Transmission Time Interval

    20 ms

    40 ms

    Type of Error Protection

    Convolution Coding

    Convolution Coding

    Coding Rate

    1/3

    1/3

    Rate Matching attribute

    256

    256

    Size of CRC

    16

    12

    Position of TrCH in radio frame

    fixed

    fixed

  3. Channel coding is illustrated in the following figure. After channel coding, the signal of each slot is spread and scrambled, then output at pin out (non STTD). Pin STTDout outputs the signal with STTD encoding.
  4. This subnetwork model also provides the original transport source bits through pins DCCH and DTCH that can be used in BER measurements.

    Channel Coding of DL Reference Measurement Channel (12.2 kbps)

References
  1. 3GPP Technical Specification TS 25.101 V3.10.0, UE Radio transmission and reception (FDD), March 2003, Release 1999.

    http://www.3gpp.org/ftp/Specs/2002-03/R1999/25_series/25101-3a0.zip

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