Abstract

This paper presents a new and an efficient method to implement quadrature amplitude modulator (QAM) using field programmable gate array (FPGA). Two QAM modulators were implemented i.e. 4QAM and 16 QAM. The targeted board for the implementation is ZYBO board from XILINX and the used software is XILINX Vivado. The main important point in the paper is the use of quarter wave instead of full wave sinusoidal signal to generate the carrier signal. This process has saved the utilization resources by more than 50%. Saving this many resources will make a great impact on the future implantation of digital modulators since the implementation depends heavily on how the carrier signal got generated because it consumes most of utilization recourses. The paper used very high speed integrated circuit hardware descriptive language (VHDL) without the help of high level simulation tools like DSP builder tools or XILINX system generator.