DESIGN OF DIRECT DIGITALLY SYNTHESIZED ARBITRARY WAVEFORM GENERATOR USING FIXED-POINT DIGITAL SIGNAL PROCESSOR

Abstract

This paper describes a prototype design to demonstrate the design of arbitrary waveform generator based on Direct Digital Synthesis (DDS) technique implemented on Digital Signal Processor. The key idea is the utilization of Look- up Table (LUT) supported with Code Composer Studio (CCS) platform. The arbitrary waveform is synthesized by storing samples in the memory of TMS320VC5416 Digital Signal Processor (DSP) in LUT form. The processor while executing the program recalls the stored samples sequentially and presents them to the Digital-to-Analog (D/A) Converter and the D/A converter generates the desired arbitrary waveform. The experimental results have been included.