Convergence of Wireless and Optical Networks for 5G

This project addresses the critical need to increase capacity and spectral efficiency in fifth-generation (5G) networks, particularly in Radio over Fiber (RoF) systems, where service coexistence demands high capacity and mobility. New modulation techniques proposed for 5G, such as GFDM, FOFDM, FBMC, and UFMC, while improving spectral efficiency, are highly sensitive to fiber dispersion and nonlinearities, degrading orthogonality and increasing transmission errors. Concurrently, traditional OFDM modulation suffers from high PAPR, reducing power amplifier efficiency and causing signal distortion. To counteract this, PAPR reduction techniques are being investigated and proposed. Specifically, this work focuses on applying clipping techniques to UFMC and GFDM, seeking optimal clipping levels and efficient operating points that achieve significant PAPR reduction with reduced signal processing, overcoming limitations of methods like SLM or PTS in the context of new 5G modulations. The methodology involves an exhaustive review of the state-of-the-art in databases like ScienceDirect and IEEE Xplorer, followed by the implementation and validation of models using specialized optical fiber network simulation software, culminating in an experimental phase and the drafting of scientific publications.<br/><br/><b>Goal</b>: <br/>The main objective is to reduce the Peak-to-Average Power Ratio (PAPR) in multi-carrier systems intended for 5G networks by implementing clipping techniques to mitigate the effects of nonlinearities present in optical fiber within converged network architectures.<br/><br/><b>Research lines</b>: <br/>Telecommunications and information technologies