Evaluación del rendimiento del canal physical downlink control channel (PDCCH) de una red 5G NR en diferentes posiciones del User Equipment (UE).

Abstract

This final career project evaluates the performance of the Physical Downlink Control Channel (PDCCH) of a fifth-generation (5G) mobile network, called New Radio (NR). The evaluation considers different positions of the User Equipment (UE). Two evaluation scenarios are proposed: a lossless system, in which losses due to the path generated in a wireless channel are not considered and a lossy system, in which losses due to the path generated in a wireless channel are considered when varying the position of the UE concerning the base station (gNB). A Rural Macrocell (RMA) scenario with a carrier frequency (fc) equal to 3.5 GHz has been considered. To evaluate the channel, a simulation of the PDCCH transmission-reception system is implemented in MATLAB R2021b. The results are presented in terms of Bit Error Rate (BER) vs Signal-to-Noise Ratio (SNR) for the lossless system, while for the lossy system, they are presented in terms of BER vs transmission power. From the results obtained, it can be determined that: at a lower coding rate there is a higher signal gain, as the number of block resources increases, the BER decreases, if the height of the UE increases, keeping the elevation angle of the UE constant, the losses and the bit error ratio, increasing the performance of the system, when the elevation angle of the UE is increased and keeping the height of the UE constant, the link distance and the losses decrease, increasing the performance of the system.