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3GPPFDD_PICH



Description: Paging Indicator Channel
Library: 3GPPFDD, Base Station
Class: SDF3GPPFDD_PICH
Derived From: 3GPPFDD_DLPCodeSrcBase

Parameters

Name

Description

Default

Unit

Type

Range

SpecVersion

version of specifications: Version_03_00, Version_12_00, Version_03_02

Version_12_00

 

enum

 

DataPattern

source data pattern: random, PN9, PN15, bits_repeat, user_file

random

 

enum

 

RepBitValue

repeating data value

0xff

 

int

[0, 255]

UserFileName

user-defined data file name

datafile.txt

 

filename

 

ScrambleCode

index of scramble code

0

 

int

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

ScrambleOffset

scramble code offset

0

 

int

[0:15]

SpreadCode

index of spread code

0

 

int

[0:SF-1];
SF can be set by SlotFormat or equal to SpreadFactor;
SF is 256 if for CPICH, PICH or uplink DPCCH

PINum

paging indicator numbers within one frame: N18, N36, N72, N144

N18

 

enum

 

tOffset

time offset in terms of 256 chips

0

 

int

[0:149]

Pin Outputs

Pin

Name

Description

Signal Type

1

out

output data

complex

2

STTDout

STTD encoder output on antenna 2

complex

Notes/Equations
  1. This model is used to generate the PICH.
    This model performs the same as the Agilent signal generator instrument ESG-D Option 100.
  2. Each firing, 2560 tokens are output. The complex output data sequence is the spread and scrambled chips where SpreadCode and ScrambleCode specify the spread and scramble codes. The output sequence is repeated on a frame-by-frame basis.
  3. SpreadCode indicates the channelization code index. ScrambleCode and ScrambleOffset together determine the scrambling code index according to the formula:

    n = (16 × i ) + k

    where

    n =scrambling code index, i =ScrambleCode value, k =ScrambleOffset value.

  4. PICH bits are generated from the PI sequence. The PI sequence pattern is defined by DataPattern, RepBitValue, and UserFileName.
    PINum specifies how many paging indicators will be carried within one radio frame.
  5. tOffset is the PICH time delay from the start of PCCPCH.

References
  1. 3GPP Technical Specification TS 25.211 V3.10.0, Physical channels and mapping of transport channels onto physical channels (FDD), March 2003, Release 1999.

    http://www.3gpp.org/ftp/Specs/2002-03/R1999/25_series/25211-3a0.zip

  2. 3GPP Technical Specification TS 25.213 V3.7.0, Spreading and modulation (FDD), March 2003, Release 1999.

    http://www.3gpp.org/ftp/Specs/2002-03/R1999/25_series/25213-370.zip

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