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