MODULATOR-DEMODULATOR (MODEM) ARCHITECTURE FOR FULL DUPLEX COMMUNCIATIONS

Described herein is a modulator-demodulator (modem) that is utilized for improving full duplex communication of a communication system. The modem includes a first digital-to-analog converter (DAC) configured to process data included in a first frequency band (e.g., 5 MHz-85 MHz) and a second DAC configured to process data included in a second frequency band (e.g., 108 MHz to 684 MHz). The modem further includes an uptilt filter configured to tilt a power spectral density of data processed by the second DAC. Moreover, the modem includes a first power amplifier configured to amplify data output by the first DAC, and a second power amplifier configured to amplify data output by the uptilt filter, the first power amplifier operates at a power level lower than a power level of the second power amplifier.