Difference between revisions of "CMA Equalizer"

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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 is taken from the [[Guided_Tutorial_PSK_Demodulation]] tutorial.
== Source Files ==
== Source Files ==

Revision as of 13:03, 6 June 2020

(DEPRECATED in 3.9 - Will be removed in a future release) - replaced by Linear_Equalizer and Adaptive_Algorithm

Implements constant modulus adaptive filter on complex stream.

The error value and tap update equations (for p=2) can be found in:

       D. Godard, "Self-Recovering Equalization and Carrier Tracking in Two-Dimensional Data Communication Systems", IEEE Transactions on Communications, Vol. 28, No. 11, pp. 1867 - 1875, 1980.


(R): Run-time adjustable

Num. taps 
Number of taps in the equalizer (channel size)
Modulus (R)
Modulus of the modulated signals
Gain (R)
Gain of the update loop
Samples per symbol 
Number of samples per symbol of the input signal

Example Flowgraph

This flowgraph is taken from the Guided_Tutorial_PSK_Demodulation tutorial.

Stage4 grc.png


Source Files

C++ files
Header files
Public header files
Block definition