ICCOM'05 Proceedings of the 9th WSEAS International Conference on Communications
Modified hidden Semi-Markov model for modelling the flat fading channel
IEEE Transactions on Communications
A novel fingerprint location method using ray-tracing
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Simplified path gain model for mobile-to-mobile communications in an urban high-rise environment
Sarnoff'10 Proceedings of the 33rd IEEE conference on Sarnoff
Performance Evaluation of Interference Bound Backhaul Links in High Capacity Wireless Networks
Wireless Personal Communications: An International Journal
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Due to the site specific nature of microcellular operational environments, propagation models are required to take into account the exact position, orientation and electrical properties of individual buildings, and hence, ray-tracing techniques have emerged as the dominant methods to predict propagation in such environments. A novel hybrid three-dimensional (3-D) ray-tracing algorithm which can evaluate scenarios incorporating many thousands of objects by utilising the concept of “illumination zones,” is presented. In order to evaluate the accuracy of the presented model, comparisons of narrow-band and wide-band predictions with measurements are performed for a variety of scenarios. First, power comparisons show that very accurate predictions can be achieved (RMS errors less than 3.7 dB). Then, wide-band analysis shows that since the RMS delay spread for systems with finite bandwidth is a function of the multipath phase, only average measured and predicted RMS delay spread values can be compared and as a result, limited averaging can produce large RMS errors. With sufficient averaging the achieved wide-band accuracy in terms of the predicted RMS delay spread, is adequate for most planning purposes