Case 1: Indoor-outdoor or outdoor-indoor Median path loss: -outdoor) = (outdoor-outdoor) + L(indoor L Lwe where is the attenuation due to external walls (default Lwe value = 10 dB). Case 2: Indoor-indoor are two different scenarios possible: The transmitter and receiver are in the same or in different buildings. i) Selection of the scenario The first step is to determine whether the indoor-indoor scenario corresponds to transmitter and receiver in the same building or not. ii) Indoor-indoor, different buildings Median path loss: -indoor) = (outdoor-outdoor) + 2Lwe L(indoor L It is noticealbe that the loss due to 2 external walls is to add. iii) Indoor-indoor, same building Median path loss: with = loss of internal wall (in dB) (default Lwi value = 5 dB) = loss between adjacent floor (in dB) (default Lf value = 18.3 dB) = empirical parameter (default b value = 0.46) = size of the room (in m) (default droom value = 4 m) = height of each floor (in m) (default hfloor value = 3 m). the fix function returns the integer portion of a number. ITU-R P.1546-1 Propagation Prediction Model The propagation prediction contained in ITU-R Recommendation P.1546-1 has been developed over the years for the point-to-area prediction of field-strength for the broadcasting, land mobile, maritime mobile and certain fixed services (e.g., those employing point-to-multipoint systems) in the frequency range of 30 MHz to 3 000 MHz and for the distances range 1 km to 1000 km. This model consists of a set of propagation curves that represent field-strength values for 1 kW effective radiated power (e.r.p.) at nominal frequencies of 100, 600 and 2 000 MHz, respectively, as a function of
Case 1: Indoor-outdoor or outdoor-indoor Median path loss: L(indoor -outdoor) = L (outdoor-outdoor) + Lwe where Lwe is the attenuation due to external walls (default value = 10 dB). Case 2: Indoor-indoor are two different scenarios possible: The transmitter and receiver are in the same or in different buildings. i) Selection of the scenario The first step is to determine whether the indoor-indoor scenario corresponds to transmitter and receiver in the same building or not. ii) Indoor-indoor, different buildings Median path loss: L(indoor -indoor) = L (outdoor-outdoor) + 2Lwe It is noticealbe that the loss due to 2 external walls is to add. iii) Indoor-indoor, same building Median path loss: with Lwi = loss of internal wall (in dB) (default value = 5 dB) Lf = loss between adjacent floor (in dB) (default value = 18.3 dB) b = empirical parameter (default value = 0.46) droom = size of the room (in m) (default value = 4 m) hfloor = height of each floor (in m) (default value = 3 m). the fix function returns the integer portion of a number. ITU-R P.1546-1 Propagation Prediction Model The propagation prediction contained in ITU-R Recommendation P.1546-1 has been developed over the years for the point-to-area prediction of field-strength for the broadcasting, land mobile, maritime mobile and certain fixed services (e.g., those employing point-to-multipoint systems) in the frequency range of 30 MHz to 3 000 MHz and for the distances range 1 km to 1000 km. This model consists of a set of propagation curves that represent field-strength values for 1 kW effective radiated power (e.r.p.) at nominal frequencies of 100, 600 and 2 000 MHz, respectively, as a function of
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