Hardware dedicado para demodulação S-FSK baseada em verossimilhança.

Abstract

In the last decades, interest in applications such as home automation and advanced metering infrastructures has motivated extensive investigations on the subject of power line communication (PLC). This applications require viable modems which can communicate in narrow band using the power line as the communication channel. In this area, the primary challenge is in overcoming the noise and attenuation characteristics of the power line, which was not designed to be a communication channel. Among the strategies for dealing with this are the development of robust codification and modulation standards, efficient demodulation techniques and network protocols adequate to the inevitable oscillations of the transmission capability. Here we work on demodulation. Starting from theoretical ideas found in the literature, we proceed to complete specification of a dedicated hardware for S-FSK demodulation, following the IEC 61334-5-1 standard. A model is written for validation.