OpenRTX

Autor	SHA1	Wiadomość	Data
Niccolò Izzo	2d8c696a09	Complete M17 demodulator implementation Make quantization work also on DC offset signal Add samples plot code Fix bug in buffer wrap around Fix oob memory access in M17 modulator Update tests with DC offset signal Switch to 48KHz sample rate for Module17 and MD380 Add DC biasing script TG-81	2022-05-27 21:48:46 +02:00
Niccolò Izzo	5bf4df75ba	Fine tune demodulator to OpenRTX M17 baseband Fine tuned M17 demodulator with code generated from OpenRTX itself. TG-81	2022-05-27 21:48:46 +02:00
Niccolò Izzo	4b498689f5	Replace RRC filter taps, update M17 testsuite RRC filter taps have been replaced with the ones generated by Wojciech, a new baseband for the M17 demodulation testsuite has been generated, using OpenRTX itself and some further minor changes. TG-81	2022-05-27 21:48:46 +02:00
Niccolò Izzo	3163dd49d7	Add M17 demodulator code and tests Added implementation of the M17 4FSK demodulator, including clock recovery, phase detection, and quantization algorithms. A testsuite is also included to do regression testing against a reference baseband pre-generated and the corresponding reference bitstream. A 1% BER is still present due to a fault likely in the RRC filtering, since the eye diagram of the filtered stream is bad. TG-81	2022-05-27 21:48:46 +02:00