Generación de señales para sistemas de radio sobre fibra basados en la combinación eléctrica de componentes de banda base y radiofrecuencia

Abstract

This paper describes the generation of signals for radio over fibre system based on electrical combination of baseband and radiofrequency components. In these systems, the radio frequency carriers are conveyed as optical subcarriers over an optic fiber link in a point-to-point or point-to-multipoint connectivity paradigm. Radio over fiber systems are considered as the cornerstone over which next generation networks will be founded by allowing a single physical platform to supports the information exchange from both fixed and mobile users. The paper analytically describes the signal generation process by defining the electrical field as a function of the baseband and radiofrequency signals modulation depth. By means of modeling an electrical field, it was found a trade-off between the modulation depths of both signals; as well as the their optimum value in order to assure a good signal a the transmitter output.