Signal processing through digital circuits performed in FPGA
- DVB-T modulator
- Eco canceller for DVB-T
- Multirate filter design
- Linear Predistorter for Analogue Channel Filters
- Non-Linear Predistorter for PA
DVB-T modulator
Block diagram of the design of an OFDM modulator made entirely of FPGA
Bench Modulator Measurement Chart:
DVB-T constellations: 64-QAM and 16-QAM
DVB-T signal spectrum
Modulator test scheme with commercial receiver
Scenario: Extension of the coverage area of the terrestrial digital signal through isofrequency repeaters
Problem: Possible presence of echoes with risk of interruption of the television service
Solution: DVB-T repeater equipped with echo canceller
Block diagram of the echo canceller
Schematic diagram for the eraser
Counter measurements of echo cancellation
Measurement of the amplitude characteristic of the filter made in FPGA
Mask to insert compensator curves of the predistorter
Measurement of the linear pre-distortion
