Memoria técnica del proyecto de titulación "implementación de técnicas de comunicaciones digitales sobre un dispositivo FPGA"

Abstract

Communication systems comprise several stages being the stage related to input signal modulation, one of the most important phases. This project explores the implementation of different modulation schemes on an FPGA device, in order to show its versatility related to making use of this type of devices in developing telecommunication systems given its flexibility feature. Thus, ASK, FSK, PSK and QAM modulations are implemented over a Spartan 3E development board as part of an integrated system which includes a radio frequency amplification and coupling stage that enables the system to transmit signals wirelessly. In this context and aiming to evaluated the performance of the implemented modulation schemes, we make use of the GNU Radio software, which comprises a set of tools focused on testing, learning and developing communication systems. This software is employed to test our modulations implementation by the definition of different experimental processes that yield an estimation of bit error rates within a confidence interval of 95%. Received information is processed at a personal computer running Matlab which support our results analysis.