SDR originates from a discovery made about an inexpensive mass-produced DVB-T TV tuner dongle by Antti Palosaari, Eric Fry and Osmocom (in particular Steve Markgraf). DVB-T is an abbreviation for Digital Video Broadcasting-Terrestrial, one standard for digital television broadcasting first published in 1997. The standard defines frequency in the VHF and UHF RF frequency bands and how data is carried on the RF signal.
The pioneers of SDR discovered something unique about the Realtek RT2823U coded orthogonal frequency division multiplexing chipset. The raw I/Q data on the RTL2832U chipset could be accessed directly, making the DVB-T tuner a wideband software-defined radio. The custom driver software developed by Steve Markgraf was the keystone to SDR development.
Osmocom is an open source mobile communication project that develops software and tools for mobile…
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APC (Digital) - 1 Issue, April 2020