Indoor radiated-mode leaky feeder propagation at 2.0 GHz
This paper presents the results of narrow-band and wide-band propagation measurements carried out at 2.0 GHz in an indoor environment using a radiated-mode leaky feeder as...
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Format: | Article |
Language: | English |
Published: |
2010
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Subjects: | |
Online Access: | https://hdl.handle.net/10356/79999 http://hdl.handle.net/10220/6322 |
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Institution: | Nanyang Technological University |
Language: | English |
Summary: | This paper presents the results of narrow-band and
wide-band propagation measurements carried out at 2.0 GHz in
an indoor environment using a radiated-mode leaky feeder as
the transmitting antenna. The narrow-band measurements were
devised to measure attenuation of radio signals and the wide-band
techniques to measure multipath impulse responses and their
associated root mean square (rms) delay spread. Analysis of
the narrow-band data files shows that the received signal levels
in the direction along the feeder generally decay exponentially
due to the feeder-specific attenuation. The received signal levels
in the direction radial to the feeder decrease slowly, and the
distance–power law exponent is found to be smaller than one.
The slow and fast variations of the received signal levels are also
examined. The results reveal that the slow variations basically
follow the log-normal distribution, while the fast variations fit
the Rayleigh distribution in the direction parallel to the feeder
and the Rician distribution in the direction radial to the feeder,
respectively. Analysis of the wide-band data files reveals that the
maximum value of the rms delay spread is 60.6 ns and the rms
delay spread values are less than 42 ns 50% of the time. One
therefore can conclude that the indoor channel excited by the
radiated-mode leaky feeder has a broad coherent bandwidth and
can support the data rate up to 3.3 Mb/s without equalization. |
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