Versatile Circuit Designs of Digital Modulator and Demodulator

Abstract

Digital Modulation has a complete scope of appli-cations due to its higher quality communications, compatibility, and security. The digital modulation techniques are being imple-mented in WiFi, RF modules, Bluetooth, and GSM. In this paper, we proposed versatile hardware designs that perform various modulations and demodulations with the same hardware. The generated versatile design can be configured with the control line to give the following modulations and demodulations: Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK), Phase Shift Keying (FSK), Differential Phase Shift Keying (DPSK), Quadrature Phase Shift Keying (QPSK), and Minimum Shift Keying (MSK). The proposed generic design is able to cut down the expenditure of the hardware, as it replaces all the modulation circuits with a single optimized circuit.