CMA Equalizer: Difference between revisions
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[[Category:Block Docs]] | [[Category:Block Docs]] | ||
'''(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. | 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", | 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. | ||
== Parameters == | == Parameters == | ||
| Line 19: | Line 20: | ||
== Example Flowgraph == | == Example Flowgraph == | ||
This flowgraph is taken from the [[Guided_Tutorial_PSK_Demodulation]] tutorial. | |||
[[File:stage4_grc.png|600px|]] | |||
[[File:stage4.png|600px|]] | |||
== Source Files == | == Source Files == | ||
; C++ files | ; C++ files | ||
: [https://github.com/gnuradio/gnuradio | : [https://github.com/gnuradio/gnuradio/blob/master/gr-digital/lib/cma_equalizer_cc_impl.cc 1] | ||
; Header files | ; Header files | ||
: [https://github.com/gnuradio/gnuradio | : [https://github.com/gnuradio/gnuradio/blob/master/gr-digital/lib/cma_equalizer_cc_impl.h 2] | ||
; Public header files | ; Public header files | ||
: [https://github.com/gnuradio/gnuradio | : [https://github.com/gnuradio/gnuradio/blob/master/gr-digital/include/gnuradio/digital/cma_equalizer_cc.h 3] | ||
; Block definition | ; Block definition | ||
: [https://github.com/gnuradio/gnuradio | : [https://github.com/gnuradio/gnuradio/blob/master/gr-digital/grc/digital_cma_equalizer_cc.block.yml 4] | ||
Latest revision as of 21:38, 26 November 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.
Parameters
(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.
Source Files
- C++ files
- 1
- Header files
- 2
- Public header files
- 3
- Block definition
- 4