Implementación de esquemas de modulación digital para sistemas de banda ultra ancha utilizando Simulink.

Abstract

For the development of the complex examination work it was necessary to search for information related to the CDMA (Multiple Division by Code Division), OFDM (Orthogonal Frequency Division Multiplexing) and, UWB (Ultra Broadband) systems and with different digital modulation, such as: QAM (Quadrature Amplitude Modulation), QPSK (Quaternary Phase Displacement Modulation), BPSK (Binary Phase Displacement Modulation). Also, it was necessary to find the appropriate simulation tool. The platforms available for simulation are: MatLab / Simulink, Riverbed Modeler and OMNeT. The simulation software used in the complex examination was Simulink. The simulation scenarios designed to model the CDMA, OFDM and UWB systems allowed to validate that the UWB technology is more efficient and has better performance in comparison to the other two designed systems. The advantage of the UWB system is that it works with multiband OFDM and that it provides greater accessibility in the bandwidth for data services.