Abstract
A new improvement approach to Lafortune-Lecours indoor propagation model is presented. Taking into consideration; different types of walls that have been not considered in the model. The concrete and brick walls cause considerable severe signal deterioration when they obstruct the transmission path of the signal. Improvement of the above mentioned model is achieved by computing the path loss through those kinds of obstructions by adding some parameters and terms to the existing model.
Highlights
Many studies to predict propagation inside building have been conducted and the reason behind that is to predict the propagation behavior inside buildings so the optimum location of the base stations can be chosen to ensure maximum capacity and minimum co-channel interference. [1]-[4]
For same-floor propagation measurements, the attenuation factor was found to be 2.4 dB for concrete or brick walls which conforms to the result obtained in [2], which will be included as additional term in Lafortune-Lecours model(LL model) as improvement contribution to this model
The standard deviation between the measured and predicted path loss is with average error of 8.66 dB and standard deviation of 6.15dB in case of not taking into consideration the concrete and brick walls whilst the average error of 0.38 dB and standard deviation of 5.95 dB in case of concrete and brick walls
Summary
Many studies to predict propagation inside building have been conducted and the reason behind that is to predict the propagation behavior inside buildings so the optimum location of the base stations can be chosen to ensure maximum capacity and minimum co-channel interference. [1]-[4]. The signals propagating through walls suffer significantly higher losses than in free space. The existence of different obstruction with different materials will provide different propagation paths. For same-floor propagation measurements, the attenuation factor was found to be 2.4 dB for concrete or brick walls which conforms to the result obtained in [2], which will be included as additional term in Lafortune-Lecours model(LL model) as improvement contribution to this model. The standard deviation between the measured and predicted path loss is with average error of 8.66 dB and standard deviation of 6.15dB in case of not taking into consideration the concrete and brick walls whilst the average error of 0.38 dB and standard deviation of 5.95 dB in case of concrete and brick walls. The presence of any material in the path of transmission between the transmitter and receiver severely affect the propagation characteristics of any wave signal. It is very important to understand the impact of the physical surrounding on the propagation
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