Influence of the human activity on wide-band characteristics of the 60 GHz indoor radio channel

This paper presents propagation measurements in the presence of human activity for a 60 GHz channel. Series of 40-min-long measurements of the channel impulse response have been recorded with a sampling period of 1.6 ms, for a total duration of about 20 h. During measurements, the human activity (be...

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Bibliographic Details
Published in:IEEE transactions on wireless communications 2004-11, Vol.3 (6), p.2396-2406
Main Authors: Collonge, S., Zaharia, G., Zein, G.E.
Format: Article
Language:English
Subjects:
60 GHz
Antenna measurements
Antennas and propagation
Applied sciences
Attenuation
Bandwidth
channel sounding
Channels
Communication systems
Electronics
Engineering Sciences
Exact sciences and technology
Frequency
Human
Human body
Humans
Impulse response
indoor propagation
Indoor radio communication
Millimeter wave propagation
millimeter waves
Polarization
Propagation through the atmosphere
Radiocommunications
Radiowave propagation
Sampling
Studies
Telecommunications
Telecommunications and information theory
time-varying channel
Wideband
Wireless communication
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Summary:This paper presents propagation measurements in the presence of human activity for a 60 GHz channel. Series of 40-min-long measurements of the channel impulse response have been recorded with a sampling period of 1.6 ms, for a total duration of about 20 h. During measurements, the human activity (between zero and 15 persons) was observed with a video camera. The obstruction phenomenon due to the human bodies is characterized in duration and amplitude from the propagation characteristics (attenuation, coherence bandwidth) by means of an appropriate method. The results highlight and quantify the problems due to the human activity for high data rate communication systems. When the direct path is shadowed by a person, the attenuation generally increases by more than 20 dB, for a median duration of about 100 ms for an activity of one to five persons and 300 ms for 11-15 persons. Globally, the channel is "unavailable" for about 1% or 2% of the time in the presence of one to five persons. This channel characterization makes it possible to modelize the temporal variations of the 60 GHz channels. The results also give orientations for the design of high data rate communications systems and networks architectures at 60 GHz.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2004.837276