IIIE   20352
INSTITUTO DE INVESTIGACIONES EN INGENIERIA ELECTRICA "ALFREDO DESAGES"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
FPGA Implementation and Evaluation of a PWM-based RF Modulator
Autor/es:
PABLO S. MANDOLESI; JUAN I. MORALES; FERNANDO CHIERCHIE; EDUARDO E. PAOLINI
Lugar:
Buenos Aires
Reunión:
Congreso; 26º Congreso Argentino de Control Automático; 2018
Institución organizadora:
Asociación Argentina de Control Automático - AADECA
Resumen:
In this paper we present a modulator for an all-digital pulsewidth modulated (PWM) transmitter based on switching amplification. In this approach, each symbol is represented by a sequence of pre-computed PWM pulse widths stored in a table that results in reduced Error Vector Magnitude (EVM), achieving low distortion with a reduced pulse-rate. The modulator is implemented in a field programmable gate array (FPGA) device. The performance of this approach is compared to standard uniform PWM modulator. Measurements using 64-QAM signals show a reduction of EVM values from 11.61% (-18.7 dB) for uniform PWM to 2.41% (-32.4 dB) for the proposed approach.