OFDM SIGNALS NONLINEAR FREQUENCY MODULATION DURING COMMUNICATION WITH HIGH-SPEED AIRCRAFTS

Abstract

In the article influence of nonlinear frequency modulation on providing of connection with high-speed unmanned aerial vehicles (UAV) at the use of ortogonal frequency discrete modulation (OFDM) is analyzed. For the detailed research of spectral distortions the mathematical design of UAV motion is conducted. In the package Mathcad the series of samples in an output voltage analog-to-digital converter is synthesized and signal subcarriers feedbacks on filter outputs of fast Fourier transform at different UAV flight speeds are received.

Keywords

• orthogonal frequency discrete modulation (ofdm)
• unmanned aerial vehicles (uav)
• frequency deviation