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This paper presents a real-time site-specific MIMO channel simulator for communication links in rural environments. This simulator first predicts the delay, angle of arrival and departure, and amplitude of the individual multipath arrivals (direct, ground reflected, terrain diffracted, and terrain scattered) for a specified multiple antenna receiver and transmitter link. The predicted multipath characteristics...
Current rural propagation models only consider paths (direct, ground reflected, terrain diffracted, troposphere scattered) that lie in the vertical plane containing the transmitter and receiver. This paper shows that nonspecular scattering from terrain can give significant additional contributions to the received signal in hilly/mountainous environments. To show this, we have carried out Monte Carlo...
This paper discusses Monte Carlo simulations of the fading statistics that would be observed for mobile-to-mobile links in hilly and mountainous terrain. Several terrain databases are employed for the simulations. Their terrain heights are scaled so that the dependence of fading statistics on terrain standard deviation can be investigated. The simulations make use of a computer code that accounts...
This paper discusses a computer program for deterministic prediction of radio wave scattering in hilly and mountainous terrain using a DTED terrain database. A fast and accurate visibility algorithm with a linear computational complexity and little RAM requirement is invented to find the terrain elements that are commonly visible to both ends of the communication links. Comparing with the vertical...
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