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The role of path loss on the selection of the operating bands of UWB systems | IEEE Conference Publication | IEEE Xplore

The role of path loss on the selection of the operating bands of UWB systems


Abstract:

We performed a propagation experiment in a modern office building in Rome, Italy. The propagation measurements are based on the use of a vector network analyzer (VNA) ove...Show More

Abstract:

We performed a propagation experiment in a modern office building in Rome, Italy. The propagation measurements are based on the use of a vector network analyzer (VNA) over the band 2-12 GHz, with a frequency resolution of 5 MHz. We propose a novel analysis of the dependence of path loss laws on the carrier frequency and bandwidth. Our experimental results show that the path loss exponent strongly depends on the carrier frequency. The path loss exponents increase with the increasing carrier frequency for the line-of-sight (LOS) scenarios, while exhibit an opposite behavior for the non-line-of-sight (NLOS) data. We explain this behavior by the frequency dependence of the reflection coefficient of the walls surrounding the transmitter. Indeed, the lowest frequencies (2-5 GHz) are reflected, while the highest frequencies (up to 12 GHz) pass through the walls.
Date of Conference: 05-08 September 2004
Date Added to IEEE Xplore: 03 January 2005
Print ISBN:0-7803-8523-3
Conference Location: Barcelona, Spain

References

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