Software-defined radio (SDR)

Software-defined radio, also referred to as SDR, is an approach to radio systems where hardware components are replaced with software.

Tutorials

General DSP stuff

• https://pysdr.org/
• Clock Recovery and Synchronization
• Costas Loop Demodulator
• FSK Modulation and Demodulation
• Spread Spectrum Modulation and Demodulation
• The simplest BPSK DSSS Radio Beacon with SDR demodulation

GNU Radio

• https://blog.habets.se/2017/04/Decoding-FSK.html
• https://wiki.gnuradio.org/index.php?title=QPSK_Mod_and_Demod

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