3 Commits

Author	SHA1	Message	Date
Andreas Eversberg	46fa72894e	C-Netz: Calibration/fix processing of tone levels on TX and RX side ... FSK and compander levels are adjusted. Eliminate offsets between subsequent speech chunks. This is done by high-pass filter. An offset is not passed to the filter. Do correct audio processing chain: time compress -> compressor -> scrambler / pre-emphasis -> TX RX -> de-scrambler / de-emphasis -> expander -> time expand	2016-05-13 09:37:03 +02:00
Andreas Eversberg	e2a9c2c6a5	Automatic FSK polarity selection on TX side ... This is done by simulating two cells with different polarities. On first message from mobile station, the cell with the correct polarity is used, the other is disabled. On RX side the polarity is not selected, since FSK decoder detects polarity for every frame.	2016-05-13 09:37:01 +02:00
Andreas Eversberg	16acdbf59d	Implementation of C-Netz (German mobile telephone system)	2016-04-24 15:19:00 +02:00