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Wireless Radio Propagation Characteristics

This project is a study of how radio waves are propagated in specific environments, how the waves undergo attenuation while traveling from transmitter to receiver and the factors that affect the propagation process.

To study the propagation characteristics, signal strengths at different radii from the transmitter have been measured considering the circular coverage area. The transmitting unit comprises of an RF (Radio Frequency) transmitter which can transmit frequency up to 1.5 GHz with the fixed power output of -110 dBµ. Conical horn antenna has been used at the transmitting side. The receiving unit consists of a parabolic reflector and a Spectrum Analyzer which displays the received signal power in dBm units. From the obtained set of data, path loss exponent 'n' has been estimated using the propagation models for the indoor environment. The set of measured data at each radius showed a Gaussian distribution.

GUI (Graphical User Interface) simulation is performed to see the distribution of random users within a cell, the maximum and minimum power received and to observe the random shadowing effects which occur over a large number of measurement locations which have the same T-R (Transmitter- Receiver) separation, but have different levels of clutter on the propagation path.


  •     Sirsha Bhattarai
  •     Anuja Sharma
  •     Salina Sharma
 

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