Handle forward error correction processing in gnuradio. Implements the GNU Radio FEC API, supporting encoders and decoders for no-op dummmy, repetition, and convolutional classes. Part of the main gnuradio build.

Library of filter blocks used in gnuradio. Implements FIR, IIR and FFT filters, as well as Polyphase filterbank and PFB arbitrary resampler methods. Part of the main gnuradio build.

Libiio is a library that has been conceived to ease the development of applications interfacing Industrial Input/Output (IIO) devices through the IIO subsystem of the Linux kernel.

Library of blocks that implement UDP and TCP source and sink blocks supporting both IPv4 and IPv6. 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.

The gnuradio interface to the UHD library to connect to and send and receive data between to the Ettus Research, LLC product line - including the USRP family of software radio peripheral devices. Part of the main gnuradio build.