RRC Filter Taps

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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 RRC filter at wikipedia for more info on RRC filtering.


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
Header files
Public header files
Block definition