Análisis de eficiencia espectral en la banda LTE para la inclusión de señales 5G usando GFDM

Abstract

The purpose of this article is to analyze the spectrum in the LTE band of Ecuador to determine which frequency spaces are not being used and to introduce some 5G characteristic signals (high speed and low latency), through the GFDM medium access technique (Multiplexing by Generalized Frequency Division) using a USRP 2944R (software defined radio) and LabVIEW Communications System Design. In the first instance a state of the art was made and it was understood what are the parameters established by the ITU (International Telecommunication Union) for the NGN (New Generation Networks), and the necessary configurations for a correct functioning of the transceiver in the free frequency 2.16GHz belonging to the K' block of the radio spectrum assigned by the ARCOTEL. MP4 video was transmitted via UDP to LabVIEW implementing various Tx speeds and different video qualities, reaching up to 3 Gbps as maximum speed, the best results were obtained by implementing a speed of 925.2 Mbps with a resolution of 1920x1080 pixels, that is, at a quality of 1080p and a BW of 10 MHz, thus obtaining a BER value in the order of 10^-3.