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Measurement-based assessment of space diversity for indoor fixed wireless channels Wang, Chengyu
Abstract
We have employed a measurement-based approach to investigate the effectiveness of space diversity in indoor fixed wireless environments where body shadowing (blockage of the line-of-sight between the transmitter and receiver by the movement of people) is a significant impairment. In order to assist those planning measurement campaigns in indoor fixed wireless environments, we present simulation results that give the sample duration required to accurately estimate path gain and Rician K-factor given the parameters of the Doppler spectrum (type and cut-off) and the sample rate. Next, we present measurement results that show the received signal envelope generally follows the Rician distribution when people move between the transmitter and receiver. We also reveal details of the manner in which body shadowing affects the shape of the Doppler spectrum observed in indoor fixed environments. In particular, we show that body movement can give rise to small sidebands in the Doppler spectrum. Finally, we compare theoretical predictions of spatial correlation as a function of antenna spacing to the measurement results and found reasonable agreement. The results give us confidence that our measurement system is suitable for use in more ambitious measurement campaigns in the future. Finally, we show how measurement-based models could be used in dynamic simulations of space diversity channels in indoor fixed wireless environments.
Item Metadata
Title |
Measurement-based assessment of space diversity for indoor fixed wireless channels
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2005
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Description |
We have employed a measurement-based approach to investigate the effectiveness of
space diversity in indoor fixed wireless environments where body shadowing (blockage
of the line-of-sight between the transmitter and receiver by the movement of people) is
a significant impairment. In order to assist those planning measurement campaigns in
indoor fixed wireless environments, we present simulation results that give the sample
duration required to accurately estimate path gain and Rician K-factor given the
parameters of the Doppler spectrum (type and cut-off) and the sample rate. Next, we
present measurement results that show the received signal envelope generally follows
the Rician distribution when people move between the transmitter and receiver. We
also reveal details of the manner in which body shadowing affects the shape of the
Doppler spectrum observed in indoor fixed environments. In particular, we show that
body movement can give rise to small sidebands in the Doppler spectrum. Finally,
we compare theoretical predictions of spatial correlation as a function of antenna
spacing to the measurement results and found reasonable agreement. The results
give us confidence that our measurement system is suitable for use in more ambitious
measurement campaigns in the future. Finally, we show how measurement-based
models could be used in dynamic simulations of space diversity channels in indoor
fixed wireless environments.
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Genre | |
Type | |
Language |
eng
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Date Available |
2009-12-11
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0065863
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2005-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.