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
- 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 (b_{0}, b_{1}, ..., b_{299}). Of these, 288 bits (b_{0},b_{1}, ..., b_{287}) are used to carry PIs. The remaining 12 bits (b_{288}, b_{289}, ..., b_{299}) 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
- 3GPP Technical Specification TS 25.141 V3.3.0, "Base station conformance testing (FDD)," September 2000.
- 3GPP Technical Specification TS 25.211 V3.2.0, "Physical channel and mapping of transport channels onto physical channels (FDD)," March 2000.