DSB-SC AM based software defined radio(SDR) design
S B Saraswati, Manjunath Gurubasappa Asuti, Aumkarnath Mishra · 2016
The rapid growth in speed and density of programmable logic devices such as FPGA's (Field Programmable Gate Arrays) facilitates ever more complex designs to be built within a short time frame. The adjustability of a programmable device makes it easy to integrate a design with variety of peripherals or components on a single chip and makes it versatile. Implementation of a highly realized and efficient programmable digital DSB-SC (Double Side Band Suppressed Carrier) AM (Amplitude Modulation) modem on ARTIX-7 FPGA has been done for mastering towards the Software Defined Radio (SDR) application. Since DSB-SC is an analog modulation scheme, carrying out it in the digital domain introduces new challenges. The goal of this paper is to make out simulation and implement DSB-SC scheme on FPGA. Since FPGA is well suited for real time algorithms we choose it as platform for implementation. MATLAB R2012a is used for simulating the DSB-SC modulation and demodulation algorithms, and ARTIX-7 FPGA is used as implementation platform with Xilinx ISE 14.7 System Generator. The output waveforms are displayed and approved using Xilinx Chip Scope Pro.