Design and Implementation of Universal Modulator using Two- Level Pipelined Cordic Structure

Abstract: Different architectures have been proposed for FPGA implementation of Universal Modulator. The Look up table (LUT) technique is one way of realizing universal modulator. Here the CORDIC is used for efficient realization of Universal Modulator. The coordinate rotation digital computer (CORDIC) algorithm is widely used in various technological fields such as digital signal processing (DSP), biomedical signal processing, robotics, communication systems, image processing etc. Due to ease of simple shift and add operations, the use of CORDIC based systems is increasing drastically. The Universal Modulator is used for realizing Amplitude, Frequency and Phase Modulation. The generation of SIN and COS output values will are tested for a given input angle (?) value. The universal modulator will be designed around the CORDIC algorithms which can generate all most all digital modulation schemes such as ASK, PSK, FSK. Keywords: Universal Modulator CORDIC, ASK, FSK, PSK, FPGA.