Doppler Compensation and Singular Value Decomposition in OFDM based Aeronautical Communication release_33ie374y25fapn7yc6v4xnagq4

Abstract

Aeronautical communication system provides various services to ground networks such as public safety, military services, etc. Major aspect in communication system is to provide a low delay, cost effective, and high speed data connectivity. Due to the high velocity of the aircraft Aeronautical communication is highly affected by Doppler shifts. The aeronautical en-route scenario is modeled as a two ray channel with a Line of Sight (LOS) component and a reflected signal. The DOAs of the LOS and reflected signal can be estimated by a hybrid method of eigen values and autocorrelation using the properties of the received signal covariance matrix. Based on the DOA, the signals are separated by singular value decomposition method; Doppler shifts are corrected individually and combined using diversity combining techniques at the receiver section. Simulation results show an increase in Bit Error Rate performance after diversity combining.
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