Difference between revisions of "RRC Filter Taps"

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[[Category:Block Docs]]
 
[[Category:Block Docs]]
This is a convenience wrapper for calling firdes.root_raised_cosine().  A root-raised-cosine (RRC) filter is one of the most common pulse shaping filters in digital communications systems, used to perform matched filtering.  See [https://en.wikipedia.org/wiki/Root-raised-cosine_filter for more info on RRC filtering.
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This is a convenience wrapper for calling firdes.root_raised_cosine().  A root-raised-cosine (RRC) filter is one of the most common pulse shaping filters in digital communications systems, used to perform matched filtering.  See [https://en.wikipedia.org/wiki/Root-raised-cosine_filter RRC filter at wikipedia] for more info on RRC filtering.
  
 
== Parameters ==
 
== Parameters ==
 
; Gain
 
; Gain
: Scaling factor applied to output.
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: Overall gain of filter (default 1.0)
  
 
; Sample Rate
 
; Sample Rate
: Input sample rate in Hz.
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: Sample rate in samples per second.
  
 
; Symbol Rate
 
; Symbol Rate
: Input symbol rate in Hz, NOT samples per symbol.
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: Symbol rate, must be a factor of sample rate. Typically ((samples/second) / (samples/symbol)).
  
 
; Excess BW
 
; Excess BW
: The filter parameter, sometimes called roll-off factor or beta, between 0 and 1.  A higher value means more bandwidth is being used. A common value is 0.35.
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: Excess bandwidth factor, also known as alpha. (default: 0.35)
  
 
; Num Taps
 
; Num Taps
: Number of taps for the generated filter to have
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: Number of taps (default: 11*samp_rate)
  
 
== Example Flowgraph ==
 
== Example Flowgraph ==
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This flowgraph can be found at [https://github.com/gnuradio/gnuradio/blob/master/gr-filter/examples/filter_taps.grc].
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[[File:Filter_taps_fg.png|800px]]
  
 
== Source Files ==
 
== Source Files ==

Latest revision as of 22:49, 4 March 2021

This is a convenience wrapper for calling firdes.root_raised_cosine(). A root-raised-cosine (RRC) filter is one of the most common pulse shaping filters in digital communications systems, used to perform matched filtering. See RRC filter at wikipedia for more info on RRC filtering.

Parameters[edit]

Gain
Overall gain of filter (default 1.0)
Sample Rate
Sample rate in samples per second.
Symbol Rate
Symbol rate, must be a factor of sample rate. Typically ((samples/second) / (samples/symbol)).
Excess BW
Excess bandwidth factor, also known as alpha. (default: 0.35)
Num Taps
Number of taps (default: 11*samp_rate)

Example Flowgraph[edit]

This flowgraph can be found at [1].

Filter taps fg.png

Source Files[edit]

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