Zabezpečený obousměrný rádiový kanál s vysílacími moduly

Abstract

This thesis summarizes methods of coding radio channel against errors and eavesdropping by known algorithms and outlines problems in ISM band. The following part of thesis contains proposal of the communication protocol, including specifications of radio packet. Second chapter is dedicated to the development of a radio station for data transfer in 433 MHz band, controlled by single-chip microcontroller. Proposals of hardware and software design are described in details with the goal to manufacture end device managed by RS232. The last part of thesis contains a results of measurement in the real conditions.