GSM Design Library >Chapter 2: Channel Coding Components
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GSM_Combiner

    
Description    Combine Two Inputs into One Output
Library    GSM, Channel Coding
Class    SDFGSM_Combiner
Parameters
Name
Description
Default
Type
Range
N1
block length of first input
182
int
(0, )
N2
block length of second input
78
int
(0, )
Pin Inputs
Pin
Name
Description
Signal Type
1
in1
first of two inputs
real
2
in2
second of two inputs
real
Pin Outputs
Pin
Name
Description
Signal Type
3
out
output data
real

Notes/Equations
  1. This model is used to combine the two input blocks into one output block, used in TCH/FS to combine class 1 bits and class 2 bits, or class 1a bits (the first 50 bits of class 1) and class 1b bits (the bits of class 1 other than class 1a bits in the speech frame). N1+N2 output tokens are produced for each N1 input tokens consumed at pin in1 and N2 input tokens consumed at pin in2.

  2. The output is N1 signals of in1 followed by N2 signals of in2.

References

[1] European Telecommunications Standard Institute (ETSI), Rec. ETSI/GSM 05.03, Channel Coding, version 5.1.0, May 1996.


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