Josip Milanović - Academia.edu (original) (raw)
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International Centre for Theoretical Physics (Trieste)
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In wireless technologies information is sent by electromagnetic waves. During propagation an inte... more In wireless technologies information is sent by electromagnetic waves. During propagation an interaction between waves and environment attenuates the signal level. It causes path loss and finally it limits coverage area. The accurate path loss prediction is a crucial element in the first step of network planning. The capability of determining optimum base-station locations, obtaining suitable data rates and estimating coverage without conducting a series of propagation measurements (what is very expensive and time consuming) can be achieved with empirical propagation models. Empirical propagation models are designed for a specific type of communication systems, specific system parameters and types of environment. Therefore, selection of a suitable propagation model is the first step in the wireless network design. Okumura-Hata [1-2], COST 231-Hata [3] and COST 231 Walfisch-Ikegami [4] are widely used models for the path loss prediction in frequency bands below 2 GHz. However, new wi...
In wireless technologies information is sent by electromagnetic waves. During propagation an inte... more In wireless technologies information is sent by electromagnetic waves. During propagation an interaction between waves and environment attenuates the signal level. It causes path loss and finally it limits coverage area. The accurate path loss prediction is a crucial element in the first step of network planning. The capability of determining optimum base-station locations, obtaining suitable data rates and estimating coverage without conducting a series of propagation measurements (what is very expensive and time consuming) can be achieved with empirical propagation models. Empirical propagation models are designed for a specific type of communication systems, specific system parameters and types of environment. Therefore, selection of a suitable propagation model is the first step in the wireless network design. Okumura-Hata [1-2], COST 231-Hata [3] and COST 231 Walfisch-Ikegami [4] are widely used models for the path loss prediction in frequency bands below 2 GHz. However, new wi...