Solution for spectrum monitoring of the industrial, scientific and medical (ISM) radio bands

Abstract

The growing need for Internet connectivity allied with technological advances in the production of mobile devices have resulted in the proliferation of local networks with wireless access techniques. These networks allow greater mobility and comfort for its users, and provide multiple access and satisfactory transfer rates. These networks also became popular due to the low cost of its operational infrastructure, partly by the use of unlicensed bands, of free and public use. The widespread use of these frequency bands cause the interference from signals transmitted by multiple devices, resulting in the need of spectral analysis to obtain a local frequency spectrum diagnosis, thus providing a more effective use of it. The goal of this work is creating an infrastructure for spectral analysis of an unlicensed band, using low cost elements, allowing the monitoring of the environment and the access of that information in a simple and practical way.