Search results

{{Short description|Map of radio signal strength in an area}} ...eived power]] at each location. In turn, propagation maps characterize the propagation [[Communication channel|channel]] between arbitrary ''pairs'' of locations. ...

{{Short description|Type of fading for radio and other electromagnetic waves.}} ...cations or times. TWDP models fading due to the interference of two strong radio signals and numerous smaller, diffuse signals. ...

...of propagation serves as the medium between the [[transmitter]] and the [[Radio receiver|receiver]]. The characteristics of this channel largely dictate th ...t only the ground-based elements of the link encounter obstacles affecting propagation.<ref name="Tutorial"/> ...

...ncy-division multiple access]] mechanisms as it uses diversity in time and frequency to provide reliability to the upper network layers. [[File:TSCH.png|alt=16 channels are available in this frequency band in the IEEE 802.15.4 standard|thumb|383x383px|A TSCH slotframe on the ...

{{Short description|Multipath radio propagation model}} ...of sight propagation|line of sight (LOS)]]. Generally, the two [[Antenna (radio)|antenna]] each have different height. The received signal having two compo ...

...=":2">{{Cite book |last=Crane |first=Robert K. |title=Electromagnetic Wave Propagation Through Rain |publisher=Wiley |year=1996 |isbn=9780471613763 |edition=1st | ...attenuation time series at EHF |journal=IEEE Transactions on Antennas and Propagation |publication-date=2020 |volume=68 |issue=7 |pages=5592–5601}}</ref>'' ...

...ages" (BSMs) to all the other vehicles in its communication range with the frequency of 10 BSMs/second. These messages include information about the sender vehi ...und the map in VANETs, to perform the localization. These RSUs have a wide radio range that allows the defense mechanism to be able to monitor a lot of vehi ...

...], [[Vehicular ad hoc network|vehicular ''ad hoc'' networks]], [[cognitive radio]] networks and several types of [[cellular networks]], such as [[Heterogene ...oretic]]) [[Communication channel|channels]] sharing space and some common frequency band. Each channel consists of a set of [[transmitters]] trying to send dat ...

...e'') and its dimensions and pattern is designed such that sound waves at a frequency of 1670 Hz are strongly attenuated. It became the first evidence for the ex The simplest realization of an acoustic metamaterial would constitute the propagation of a pressure wave through a slab with a periodically modified refractive i ...