Difference between revisions of "Inner Coder"

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(Example Flowgraph)
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== Example Flowgraph ==
== Example Flowgraph ==
Insert description of flowgraph here, then show a screenshot of the flowgraph and the output if there is an interesting GUI. Currently we have no standard method of uploading the actual flowgraph to the wiki or git repo, unfortunately. The plan is to have an example flowgraph showing how the block might be used, for every block, and the flowgraphs will live in the git repo.
This flowgraph can be found at [https://github.com/gnuradio/gnuradio/blob/master/gr-dtv/examples/dvbt_tx_8k.grc].
== Source Files ==
== Source Files ==

Latest revision as of 00:52, 1 December 2020

Inner coder with Puncturing.

ETSI EN 300 744 Clause 4.3.3

Mother convolutional code with rate 1/2. k=1, n=2, K=6. Generator polynomial G1=171(OCT), G2=133(OCT). Punctured to obtain rates of 2/3, 3/4, 5/6, 7/8.

Data Input format: Packed bytes (each bit is data). MSB - first, LSB last.

Data Output format
000000X0X1 - QPSK.
0000X0X1X2X3 - 16QAM.
00X0X1X2X3X4X5 - 64QAM.


Input length 
length of input.
Output length 
length of output.
Constellation type 
type of constellation.
Hierarchy type 
type of hierarchy used.
Code rate 
Code rate used.

Example Flowgraph[edit]

This flowgraph can be found at [1].

Dvbt tx 8k fg.png

Source Files[edit]

C++ files
Header files
Public header files
Block definition