Difference between revisions of "Costas Loop"

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(Created page with "Category:Block Docs Category:Stub Docs This is the template for the "Page-per-block Docs". This first section should describe what the block...")
 
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[[Category:Block Docs]]
 
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A Costas loop carrier recovery moduleThe Costas loop locks to the center frequency of a signal and downconverts it to basebandThe Costas loop can have two output streamsThere is a single optional message input. More details can be found online:
This is the template for the [[:Category:Block_Docs|"Page-per-block Docs"]]This first section should describe what the block does and how to use it, using however many paragraphs necessaryNote that the title of the wiki page should match the block's name in GRC, i.e. the one defined in the block's .grc fileLook at the [[FFT]] Block for a good example.
 
  
As this is a basic template, it's also in the [[:Category:Stub_Docs|"Stub Docs category"]]. Please improve it.
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J. Feigin, "Practical Costas loop design: Designing a simple and inexpensive BPSK Costas loop carrier recovery circuit," RF signal processing, pp. 20-36, 2002.
  
 
== Parameters ==
 
== Parameters ==
 
(''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>
  
; Param 1 (''R'')
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; Loop Bandwidth (''R'')
: Description of parameter, provide any tips or recommended values.  Note that the name of the parameter above should match the param's label that shows up in grc (e.g. Sample Rate).
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: Internal 2nd order loop bandwidth (~ 2pi/100)
  
; Param 2
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; Order
: blah blah blah
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: The loop order, either 2, 4, or 8
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; Use SNR
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: Use or ignore SNR estimates (from noise message port) in measurements; also uses tanh instead of slicing.
  
 
== Example Flowgraph ==
 
== Example Flowgraph ==

Revision as of 04:12, 27 July 2019

A Costas loop carrier recovery module. The Costas loop locks to the center frequency of a signal and downconverts it to baseband. The Costas loop can have two output streams. There is a single optional message input. More details can be found online:

J. Feigin, "Practical Costas loop design: Designing a simple and inexpensive BPSK Costas loop carrier recovery circuit," RF signal processing, pp. 20-36, 2002.

Parameters

(R): Run-time adjustable

Loop Bandwidth (R)
Internal 2nd order loop bandwidth (~ 2pi/100)
Order
The loop order, either 2, 4, or 8
Use SNR
Use or ignore SNR estimates (from noise message port) in measurements; also uses tanh instead of slicing.

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.

Source Files

C++ files
TODO
Header files
TODO
Public header files
TODO
Block definition
TODO