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Narrowband characterization of the 60 GHz indoor radio channel in the presence of human bodies

This paper presents statistics of path loss for 60 GHz millimeter wave propagation channel simulations that are performed in the presence of humans in different indoor environments. A deterministic propagation model is used as an experimental tool to investigate the narrowband characteristics of the channel. The indoor radio propagation channel is modeled by using ray tracing and humans are modeled as perfectly conducting cylinders. The human bodies are considered as randomly distributed cylinders in a room. By varying both the number of persons and room size their effect on the received signal strength i.e. its fading distribution has been studied statistically. For a fixed room size as the number of persons increase, the variance of path loss increases due to more variations in the received signal. The variance decreases as the room size increases for a fixed number of persons. It was found that change in the dimensions of the rooms for a given area caused the statistics of path loss to change.