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- W1479871303 abstract "Ray-tracing is often used for site-specific propagation predictions, but current methods generally fail to accommodate shadowing and reflections caused by the movement of people: these represent significant effects in indoor radio environments. The method presented here improves site-specific indoor propagation predictions by including multiple, moving human bodies. The model, based on a hybrid image and ray-shooting approach, alto takes into account electromagnetic antenna-tissue interaction for body-worn terminals found in personal communications applications. The signal fading caused by pedestrians is demonstrated through simulations of a small-area (150 m2) open-plan office environment at 2.45 GHz. For a fixed point-to-point link, temporal variations in the received signal were observed over a wide range of ∼38dB and were caused solely by the movement of pedestrians. The situation becomes worse when a mobile terminal is considered: a ∼58dB variation in received signal power was observed. This variation was caused by combination of three distinct effects: spatial fading, temporal variations and antenna-body interaction. It was noted that, for antennas in close proximity to the user’s body (as may be found in personal applications using technology such as Bluetooth), a reduction in average received power of 15 dB occurred, directly due to antenna-body interaction." @default.
- W1479871303 created "2016-06-24" @default.
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- W1479871303 date "2006-02-24" @default.
- W1479871303 modified "2023-09-25" @default.
- W1479871303 title "UHF-radio Propagation Predictor for Temporal Variations in Populated Indoor Environments" @default.
- W1479871303 cites W2095575351 @default.
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- W1479871303 doi "https://doi.org/10.1007/0-306-46986-3_2" @default.
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