Simulación de estimación de canal y sincronización en la técnica de comunicación inalámbrica SEFDM: simulación de estimación CFO dentro de un sistema SEFDM.

Abstract

The degree project performs an analysis and comparison of the efficiency between 2 CFO (Carrier Frequency Offset) estimation techniques, with a cyclical prefix and preamble, and a perfect estimation, where there is no affectation of the CFO or whose value is 0, within of a SEFDM (Spectrally Efficient Frequency Division Multiplexing) system. For the analysis, we proceed to simulate, in the Matlab simulation software, the SEFDM system through an AWGN channel (Additive White Gaussian noise) with the CFO estimation techniques in the time domain and occupying an MMSE detector in reception ( Minimum Mean Square Error). The simulation is performed using several functions in Matlab, which perform each component that makes up the SEFDM transmitter and receiver, these components are described in the respective block diagrams. The simulation results are presented in curves within a BER (Bit Error Rate) vs Eb/No (Energy per Bit to Noise Power Spectral Density) graph with different simulation scenarios where a brief comparison is made between the curves of the CFO estimation techniques and the perfect estimation curve obtained in the BER vs Eb/No graphs. This comparison is made by varying simulation parameters such as: CFO value, modulation type, estimation technique, bandwidth compression factor value, etc. In addition, the conclusions and recommendations obtained from the development of the project, as well as an idea for the development of a future degree project.