Protótipo de um Sistema de Comunicação Acústico para Fins Didáticos

Lucas Bezerra Dantas Saraiva, Vicente A. de Sousa Jr., Daniel R. de Luna

DOI: 10.14209/sbrt.2021.1570725084

Evento: XXXIX Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2021)

Keywords:

Abstract

The various stages of a communication system are often not well explored in the academic environment due to the cost of radiofrequency equipment to put into practice the knowledge discussed in the classroom. The purpose of this work is to present an acoustic communication system prototype using script programming language, which can serve as a simple platform for software-defined radio (SDR), bringing practical experience and interactivity to the student learning digital modulation. The experiment may spark the idea of using everyday devices to compose handmade communications systems, by using devices such as a headset (as a transmitter) and microphone (as a receiver). As a case study, an image is transmitted by mechanical waves in the audible range, visualizing the signal in time and frequency, and also discussing aspects of synchronization and response to the channel impulse.

Download