Constellation Rect. Object: Difference between revisions
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== Parameters == | == Parameters == | ||
; Symbol Map | ; Symbol Map | ||
: | : List of alphabet symbols (before applying any differential coding) (order of list matches Constellation Points) | ||
; Constellation Points | ; Constellation Points | ||
: | : List of constellation points (order of list matches Symbol Map) | ||
; Rotational Symmetry | ; Rotational Symmetry | ||
: | : Number of rotations around unit circle that have the same representation. | ||
; Real Sectors | ; Real Sectors | ||
: | : Number of sectors the real axis is split in to. | ||
; Imaginary Sectors | ; Imaginary Sectors | ||
: | : Number of sectors the imag axis is split in to. | ||
; Width Real Sectors | ; Width Real Sectors | ||
: | : Width of each real sector to calculate decision boundaries. | ||
; Width Imaginary Sectors | ; Width Imaginary Sectors | ||
: | : Width of each imag sector to calculate decision boundaries. | ||
; Soft Bits Precision | ; Soft Bits Precision | ||
: | : The number of bits of precision used when generating the LUT. | ||
; Soft Decisions LUT | ; Soft Decisions LUT | ||
: | : The soft decision LUT as a vector of tuples (vectors in C++) of soft decisions. Each element of the LUT is a vector of k-bit floats (where there are k bits/sample in the constellation). | ||
== Example Flowgraph == | == Example Flowgraph == | ||
This flowgraph is taken from the [[QPSK_Mod_and_Demod]] tutorial. | |||
[[File:Qpsk_stage1_fg.png|800px]] | |||
== Source Files == | == Source Files == | ||
; C++ files | ; C++ files | ||
: [https://github.com/gnuradio/gnuradio/blob/ | : [https://github.com/gnuradio/gnuradio/blob/main/gr-digital/lib/constellation.cc constellation.cc] | ||
; Header files | ; Header files | ||
| Line 43: | Line 45: | ||
; Public header files | ; Public header files | ||
: [https://github.com/gnuradio/gnuradio | : [https://github.com/gnuradio/gnuradio/blob/main/gr-digital/include/gnuradio/digital/constellation.h constellation.h] | ||
; Block definition | ; Block definition | ||
: [https://github.com/gnuradio/gnuradio/blob/ | : [https://github.com/gnuradio/gnuradio/blob/main/gr-digital/grc/digital_constellation_rect.block.yml digital_constellation_rect.block.yml] | ||
Latest revision as of 14:59, 9 December 2023
A version of Constellation Object specific to rectangular constellations. See Constellation Object for more usage info.
Parameters
- Symbol Map
- List of alphabet symbols (before applying any differential coding) (order of list matches Constellation Points)
- Constellation Points
- List of constellation points (order of list matches Symbol Map)
- Rotational Symmetry
- Number of rotations around unit circle that have the same representation.
- Real Sectors
- Number of sectors the real axis is split in to.
- Imaginary Sectors
- Number of sectors the imag axis is split in to.
- Width Real Sectors
- Width of each real sector to calculate decision boundaries.
- Width Imaginary Sectors
- Width of each imag sector to calculate decision boundaries.
- Soft Bits Precision
- The number of bits of precision used when generating the LUT.
- Soft Decisions LUT
- The soft decision LUT as a vector of tuples (vectors in C++) of soft decisions. Each element of the LUT is a vector of k-bit floats (where there are k bits/sample in the constellation).
Example Flowgraph
This flowgraph is taken from the QPSK_Mod_and_Demod tutorial.
Source Files
- C++ files
- constellation.cc
- Header files
- TODO
- Public header files
- constellation.h
- Block definition
- digital_constellation_rect.block.yml