Análisis de la relación de potencia de RF y separación de frecuencias de las señales OFDM y LTE en redes ópticas

Abstract

In this article, a convergent optical access network was implemented simultaneously transmitting OFDM and LTE signals with the same wavelength through a Matlab-OptSim numerical cosimulation within a 25 km fiber link. The OFDM signal was transmitted in baseband while LTE was centered at 1.5 GHz. This frequency was decreasing until determining an adequate frequency separation between the signals, in the converged optical access network. For which optimal operating parameters were established where it was necessary to optimize the LTE RF transmission power to maintain simultaneous transmission. As a result, a spectral separation of 900 MHz was obtained between the OFDM signal and LTE. With an RF transmission power of -7 dBm achieving a sensitivity of -23 dBm for an EVM of 28.17 %. While for OFDM a BER of de 7.94 x 𝟏𝟎−𝟒 was obtained with a sensitivity of -29 dBm. Therefore, it is shown that with the proposed design of the network, the use of the spectrum was optimized while maintaining continuous spectrum, for future work to add these signals within the optical access network.