Comparación de las formas de onda FBMC y UFMC basadas en OFDM a través de simulaciones en Matlab.

Abstract

Today OFDM is a multi-carrier modulation technique adopted by some communication standards in the systems of access to the medium. The orthogonal characteristics of the subcarriers used by OFDM lead to a better use of the channel. However, compared to the needs of mobility and high transmission speeds, wireless systems present a depletion of physical resources, which is why it is important to study new techniques of multicarrier modulation aimed at a flexible allocation of time-resources. frequency. This project carries out of the OFDM modulation since it presents some limitations that diminish its performance. Two multiband modulation systems FBMC and UFMC are shown as more effective solutions. These modulation techniques result from making certain modifications in the OFDM scheme to reduce out-of-band emissions regardless of the cyclic prefix. Matlab simulations are carried out in order to compare the results obtained from the PSD and BER vs SNR graphs, for which a transmission system including transmitter, receiver and AWGN channel is simulated.