Fractional Resampler: Difference between revisions

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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]]
[[Category:Block Docs]]
[[Category:Stub Docs]]
Resampling MMSE filter.
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 necessary.  Note 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 file.  Look 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.
The resampling ratio and mu parameters can be set with a pmt dict message. Keys are pmt symbols with the strings "resamp_ratio" and "mu" and values are pmt floats.


== 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'')
; Phase Shift
: 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).
: type: real


; Param 2
; Resampling Ratio (''R'')
: blah blah blah
: The Resampling Ratio is the fraction of (input_rate/output_rate). (type: real)


== 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.
In this example, the Resampling Ratio has an additional adjustment to compensate for Underruns at the transmitter. The factor = 1.0/((usrp_rate/samp_rate)*rs_ratio)
 
[[File:NFM_xmt_fg.png|800px]]


== Source Files ==
== Source Files ==


; C++ files
; C++ files
: [https://github.com/gnuradio/gnuradio TODO]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/lib/mmse_resampler_cc_impl.cc Complex Input]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/lib/mmse_resampler_ff_impl.cc Real Input]


; Header files
; Header files
: [https://github.com/gnuradio/gnuradio TODO]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/lib/mmse_resampler_cc_impl.h Complex Input]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/lib/mmse_resampler_ff_impl.h Real Input]


; Public header files
; Public header files
: [https://github.com/gnuradio/gnuradio TODO]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/include/gnuradio/filter/mmse_resampler_cc.h Complex Input]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/include/gnuradio/filter/mmse_resampler_ff.h Real Input]


; Block definition
; Block definition
: [https://github.com/gnuradio/gnuradio TODO]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/grc/filter_mmse_resampler_xx.block.yml]

Latest revision as of 03:12, 4 February 2021

Resampling MMSE filter.

The resampling ratio and mu parameters can be set with a pmt dict message. Keys are pmt symbols with the strings "resamp_ratio" and "mu" and values are pmt floats.

Parameters

(R): Run-time adjustable

Phase Shift
type: real
Resampling Ratio (R)
The Resampling Ratio is the fraction of (input_rate/output_rate). (type: real)

Example Flowgraph

In this example, the Resampling Ratio has an additional adjustment to compensate for Underruns at the transmitter. The factor = 1.0/((usrp_rate/samp_rate)*rs_ratio)

NFM xmt fg.png

Source Files

C++ files
Complex Input
Real Input
Header files
Complex Input
Real Input
Public header files
Complex Input
Real Input
Block definition
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