Desenvolvimento de software para análise gráfica em tempo real de sistemas de comunicação digital definidos por software.

Abstract

The paradigm of communications systems based on software defined radio (SDR) experiments a fast interest growth from academy and industry. One of the Brazilian institutes working in this area is the UFCG in the Automation and Signal Processing Laboratory (LAPS), where this internship was developed. A great deal of the projects being developed in LAPS use digital modulation and demodulation schemes, more specifically, PSK modulations. In this work, a software is presented to perform evaluations of the PSK modulator/demodulator used trough graphic visualization of the communication system characteristics. It was also developed a fairly realistic channel model so the software can be used without the need of specific-purpose hardware. The model has two interesting applications: preliminary performance analysis of SDR systems and use for educational purposes.