November 2024
Intermediate to advanced
352 pages
10h 52m
English
Content preview from Communication Systems Engineering with GNU Radio
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Introduction
What is GNU Radio? GNU Radio is a toolkit providing the means to address discrete-time digital signal processing chains oriented toward radio frequency (RF) communication, but not limited to it. GNU Radio is not a readily functional decoding software for a given communication protocol: understanding the principles of signal representation, frequency transposition, synchronization, and digital information extraction will be needed before implementing functional communication systems. Thanks to its flexibility, GNU Radio is not restricted to digital communication over radio frequency channels but can be used for instrumentation, RADAR and radio frequency channel characterization, time and frequency transfer, beamforming and null steering for e.g. jamming and spoofing suppression, or any application benefiting from accessing the raw radio frequency wave characteristics.
To make the learning curve less steep, a graphical interface for assembling signal processing blocks is provided: GNU Radio Companion. It should be emphasized, though, that the graphical interface is for development ease only and is not needed for executing the resulting flowgraph; hence, GNU Radio is perfectly suited for running on embedded systems not fitted with graphical interfaces. Indeed, GNU Radio is included in the embedded Linux-built frameworks, Buildroot and OpenEmbedded, allowing to use the Python-generated processing scripts on headless embedded systems running the operating system and the ...
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