Library for Fourier transform techniques used in gnuradio. Uses single precision FFT from libfftw3-single3. Part of the main gnuradio build.

Library of blocks that implement UDP and TCP source and sink blocks supporting both IPv4 and IPv6. Part of the main gnuradio build.

Protocol Data Units library provides signal processing blocks that operate on Protocol Data Unit format messages. Many such blocks are analogs of streaming API functionality. Part of the main gnuradio build.

QT-based graphical sinks for gnuradio applications. Implements opengl, raster and native plotting methods, and supports a QT Style Sheet (QSS) file to adjust the look. Part of the main gnuradio build.

Top level component library. Defines core blocks. Handles settings for logging, performance counters, and control port. Part of the main gnuradio build.

Library for trellis coding modulation, including the Viterbi Algorithm, Concatenated Coding and Turbo Decoding based upon finite state machine (FSM) class. Part of the main gnuradio build.