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WCDMA3G_TrCHBLER


Description: Transport channel block error rate measurement
Library: 3GPPFDD 10-99, Measurement
Class: SDFWCDMA3G_TrCHBLER

Parameters

Name

Description

Default

Sym

Type

Range

BLERWindow

number of frames over which BLER is calculated

100

 

int

[1, ∞)

IgnoreFrameNum

number of frames to be ignored

0

N

int

[0, ∞)

Pin Inputs

Pin

Name

Description

Signal Type

1

in

input CRC error information

int

Pin Outputs

Pin

Name

Description

Signal Type

2

BLER

output block error rate value

real

Notes/Equations
  1. This model is used to measure the transport channel block error rate (BLER). Each firing, one input token is consumed and one output token is produced.
  2. Model functions
    Input CRC error information is read; the calculation of block error rate starts after N frames. If CRC error is 1, the error occurs while checking CRC for the transport block.
    The BLER is calculated using the following algorithm.
    The following figure shows the BLER measurement window. Suppose e0 is the value of CRC error information of the current transport block f0, e1 is for the previous transport block f1, eWb-1 is for the earliest transport block in the BLER measurement window fWb-1, and L is number of calculated transport block, then,

    the value of BLER is output every TTI.

    BLER Measurement

References
  1. 3GPP TS25.215 V3.0.0,"Physical Layer - Measurement (FDD)," October 1999.
  2. 3GPP TS25.302 V3.1.0,"Services Provided by the Physical Layer," October 1999.
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