2006 IEEE 63rd Vehicular Technology Conference
DOI: 10.1109/vetecs.2006.1683362
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Carrier Frequency Effects on Path Loss

Abstract: To study the carrier frequency effects on path loss, measurements have been conducted at four discrete frequencies in the range 460-5100 MHz. The transmitter was placed on the roof of a 36 meters tall building and the receive antennas were placed on the roof of a van. Both urban and suburban areas were included in the measurement campaign. The results show that there is a frequency dependency, in addition to the well known free-space dependency 20 log10(f), in most of the areas included in the measurements. In… Show more

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Cited by 28 publications
(18 citation statements)
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“…We use WiFi band as an example of distributing spectrum among outdoor networks, and also because this is the only outdoor network with known base station locations. Our work can easily be extended to other frequency bands by adjusting the propagation model to account for carrier frequency differences [12,41]. We leave this to a future work.…”
Section: Methodsmentioning
confidence: 99%
“…We use WiFi band as an example of distributing spectrum among outdoor networks, and also because this is the only outdoor network with known base station locations. Our work can easily be extended to other frequency bands by adjusting the propagation model to account for carrier frequency differences [12,41]. We leave this to a future work.…”
Section: Methodsmentioning
confidence: 99%
“…We use WiFi band as an example of distributing spectrum in outdoor networks, where we know base station locations. Our work can be extended to other frequencies by adjusting the propagation model to consider frequency differences [37], [38]. We do not consider the impact of MAC protocols because in the exclusive usage scenario, a market user can use any MAC protocol [9], [39].…”
Section: Methodsmentioning
confidence: 99%
“…This type of channel assignment requires channel switching to occur at a very small time scale, which is in the range of micro-seconds 5 .…”
Section: B Channel Access In Ddmacmentioning
confidence: 99%
“…Recall that a CR receiver A divides its transmission range into m regions. 5 Current radio technology allows channel switching to be done in a few microseconds (i.e., < 10 µs (b) Unallowed channel reuse Fig. 10.…”
Section: Worst-case Scenarios For Ddmacmentioning
confidence: 99%
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