Chunks to Symbols: Difference between revisions

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[[Category:Block Docs]]
[[Category:Block Docs]]
Map a stream of unpacked symbol indexes to stream of float or complex constellation points in D dimensions
Map a stream of unpacked symbol indexes to stream of float or complex constellation points in D dimensions
out[n D + k] = symbol_table[in[n] D + k], k=0,1,...,D-1


The combination of [[Packed to Unpacked]] followed by this block handles the general case of mapping from a stream of bytes or shorts into arbitrary float or complex symbols.
The combination of [[Packed to Unpacked]] followed by this block handles the general case of mapping from a stream of bytes or shorts into arbitrary float or complex symbols.
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(''R''): <span class="plainlinks">[https://wiki.gnuradio.org/index.php/GNURadioCompanion#Variable_Controls ''Run-time adjustable'']</span>
(''R''): <span class="plainlinks">[https://wiki.gnuradio.org/index.php/GNURadioCompanion#Variable_Controls ''Run-time adjustable'']</span>


; Symbol table (''R''): list that maps chunks to symbols.
; Symbol table (''R''): list that maps chunks to symbols. That list should have a length of <number of symbols> x <dimension of the table>


; Dimension : Dimension of the table.
; Dimension : Dimension of the table.
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; C++ files
; C++ files
: [https://github.com/gnuradio/gnuradio/blob/master/gr-digital/lib/chunks_to_symbols_impl.cc]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-digital/lib/chunks_to_symbols_impl.cc chunks_to_symbols_impl.cc]


; Header files
; Header files
: [https://github.com/gnuradio/gnuradio/blob/master/gr-digital/lib/chunks_to_symbols_impl.h]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-digital/lib/chunks_to_symbols_impl.h chunks_to_symbols_impl.h]


; Public header files
; Public header files
: [https://github.com/gnuradio/gnuradio/blob/master/gr-digital/include/gnuradio/digital/chunks_to_symbols.h]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-digital/include/gnuradio/digital/chunks_to_symbols.h chunks_to_symbols.h]


; Block definition
; Block definition
: [https://github.com/gnuradio/gnuradio/blob/master/gr-digital/grc/digital_chunks_to_symbols.block.yml]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-digital/grc/digital_chunks_to_symbols.block.yml digital_chunks_to_symbols.block.yml]

Latest revision as of 14:58, 4 April 2025

Map a stream of unpacked symbol indexes to stream of float or complex constellation points in D dimensions

out[n D + k] = symbol_table[in[n] D + k], k=0,1,...,D-1

The combination of Packed to Unpacked followed by this block handles the general case of mapping from a stream of bytes or shorts into arbitrary float or complex symbols.

Parameters

(R): Run-time adjustable

Symbol table (R)
list that maps chunks to symbols. That list should have a length of <number of symbols> x <dimension of the table>
Dimension
Dimension of the table.
Num ports
Number of input and output stream to process. Each stream is processed isolated from each other.

Example Flowgraph

Qpsk test2.png

Source Files

C++ files
chunks_to_symbols_impl.cc
Header files
chunks_to_symbols_impl.h
Public header files
chunks_to_symbols.h
Block definition
digital_chunks_to_symbols.block.yml