Impact of wind turbine rotor forward scattering on 16-QAM based communication system

Rotor angle dependent amplitude and phase distortion of a radio signal is calculated using 2D Fresnel-Kirchhoff diffraction approach and verified by numerical field simulation using Uniform Theory of Diffraction (UTD). The corresponding instantaneous Modulation Error Ratio (MER) and raw data Bit Error Rate (BER) are investigated considering a 16-QAM system. Time-variant channel impulse response cannot be derived from the frequency domain model of the Fresnel-Kirchhoff formula due to inherent limitations of its approximation.