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WCDMA3G_TestModel_PICH_Src


Description: PICH data source for base station test model
Library: 3GPPFDD 10-99, Test Model
Class: SDFWCDMA3G_TestModel_PICH_Src

Pin Outputs

Pin

Name

Description

Signal Type

1

out

output PICH data source

int

Notes/Equations
  1. This model is used to generate the PICH data source for test models.
    The paging indicator channel (PICH) is a fixed rate (SF = 256) physical channel used to carry the paging indicator (PI). One PICH radio frame of 10 msec consists of 300 bits (b0, b1, ..., b299). Of these, 288 bits (b0,b1, ..., b287) are used to carry PIs. The remaining 12 bits (b288, b289, ..., b299) are undefined.
    In this model, PICH carries 18 paging indicators equal to [1 0 1 1 0 0 0 1 0 1 1 0 0 0 1 0 1 0]. This defines the first 288 symbols of the PICH. Their mapping rule is given in the following table and is simplified according to the PICH definition in [2]. No power is transmitted for the 12 remaining unused symbols (=0).
    Mapping of Paging Indicators to PICH bits

    No. of PI per frame (N)

    PIi =1 (i=0,1, ..., N-1)

    PIi =0 (i=0,1, ..., N-1)

    N=18

    {b16i, ..., b16i+15}={-1,-1, ..., -1}

    {b16i, ..., b16i+15}={1,1, ..., 1}

References
  1. 3GPP Technical Specification TS 25.141 V3.3.0, "Base station conformance testing (FDD)," September 2000.
  2. 3GPP Technical Specification TS 25.211 V3.2.0, "Physical channel and mapping of transport channels onto physical channels (FDD)," March 2000.
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