Search results

{{Short description|Map of radio signal strength in an area}} ...how [[radio wave]]s spread across a geographical region. The main types of radio maps are ''signal strength maps'' and ''propagation maps''. Signal strength ...

{{Short description|Radio standard}} [[File:ICOM IC-F3162dt.jpg|thumb|150px|IDAS Radio IC-F3162DT]] ...

{{about|radio-frequency (RF) or microwave active circulators|other uses|Circulator (disam ...is an active non-reciprocal three-port device that couples a microwave or radio-frequency signal only to an adjacent [[Port (circuit theory)|port]] in the ...

{{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. ...

...model''' is applied in an urban or indoor environment where a [[Radio wave|radio signal]] transmitted will encounter some objects that produce reflected, [[ ...e equations.<ref>{{Cite book |last=Goldsmith |first=Andrea |title=Wireless communications |date=2005 |publisher=Cambridge University Press |isbn=978-0-521-83716-3 |l ...

{{Short description|Radio-astronomy observatory in Western Australia}} ...]], Australia's national science centre in 2009. It lies in a designated [[radio quiet zone]] located near [[Boolardy Station]] in the [[Murchison Shire]] o ...

...-rays model''' is a [[mathematical model]] applied to the transmissions of radio signal in an urban area, ...been demonstrated that the ten ray model simulates or can represent the [[Radio propagation|propagation]] of signals through a [[dielectric]] canyon, in it ...

...of signals for narrow-band communication channels// Radio electronics and communications systems c/c of Izvestiia- vysshie uchebnye zavedeniia radioelektronika. – 2 ...ef>W. Kozek and A. F. Molisch. "Nonorthogonal pulseshapes for multicarrier communications in doubly dispersive channels," IEEE J. Sel. Areas Commun., vol. 16, no. 8, ...

{{Short description|Problem affecting a class of radio receivers}} ...te frequency'' or ''homodyne'' receivers.}} These translate the received [[radio frequency]] (RF, or [[Passband|pass-band]]) signal directly from the [[Carr ...

...pering. With this definition we can characterize the multi-port [[Antenna (radio)|antenna]]’s frequency [[Bandwidth (signal processing)|bandwidth]] and [[ra * [[Antenna (radio)]] ...

{{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 ...

...ive [[message passing]] between a [[soft-in soft-out]] (SISO) [[Equalizer (communications)|equalizer]] and a SISO decoder.<ref>{{cite journal|doi=10.1109/MSP.2004.12 ...urbo Equalization: Principles and New Results|journal=IEEE Transactions on Communications|volume=50|issue=5|pages=754–767|year=2002 |doi=10.1109/tcomm.2002.1006557|c ...

...output signal, reducing the cost and complexity of the [[remote radio head|radio's power amplifier]].<ref>{{cite book |editor-first=Lingyang |editor-last=So [[Category:Radio communications]] ...

{{Short description|Models signal dispersion by representing the radio propagation environment by a graph}} ...ultipath propagation in scenarios with multiple scattering, such as indoor radio propagation.<ref name="Pedersen2006" /><ref name="Pedersen2007" /><ref name ...

...eliable due to the unpredictability of the wireless medium. While wireless communications bring many advantages (e.g no wires maintenance, costs reduction ...), the ...ares a schedule, allowing it to know in advance when to turn on or off its radio.<ref>{{Cite journal|year=2013|title=Performance Analysis of IEEE 802.15.4e ...

...site and connected to two receivers, which [[Heterodyne|downconvert]] the radio streams into baseband signals (BB H, BB V). ...cess is typically implemented using two blocks: a baseband [[Equalization (communications)|equalizer]] and the baseband XPIC. The output from the latter is subtracte ...

{{About|testing and analyzing wireless communications||Sounding (disambiguation){{!}}Sounding}} '''Channel sounding''' is a technique that evaluates a radio environment for [[wireless communication]], especially [[MIMO]] systems. Be ...

...we should notice not only the degradation invoked by non-ideal [[channel (communications)|channel]] and [[noise]], we should also regard [[RF]] and analog parts as ...tors; and the [[Doppler effect]] as the [[transmitter]] or the [[Receiver (radio)|receiver]] is moving. ...

'''Downlink CNR''' (''Carrier to noise ratio'' in [[Communications satellite|satellite]] reception) is an important figure in system [[TVRO]] <ref>Reference Data for radio Engineers , Howard W.sams Co.{{ISBN|0-672-21218-8}}, p.33-3</ref><ref>Elekt ...

| title = Communications: An International History of the Formative Years ...generated [[radio frequency]] [[alternating current]] and was used as a [[radio transmitter]].<ref name="Graf">{{cite book ...