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Wifi Hardware ICTP School on Radio Based Networking ... Trieste 2005. Sebastian Bttrich wire.less.dk slide2. Page 3. Scope. The term Wifi was used for ...

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Wifi HardwarePage 1Wifi HardwareSebastian Bttrichhttp://wire.less.dksebastian@wire.l ess.dkPage 2AgendaScopeCriteria for choosing hardwareTypes of Wifi hardwareAnatomy of an AP/RouterFeaturesSome productsWifi Hardware ICTP School on Radio Based Networking ... Trieste 2005Sebastian Bttrich wire.less.dk – slide2Page 3ScopeThe term Wifi was used for 802.11b only in the beginningbut today applies to the 802.11 ab and g substandards.Certifiying and owning the Trademark: The Wifi Alliance http://www.wifi.org/standardfrequency gross data ratemodulation802.11a5._ GHz54 MbpsOFDM802.11b2.4 GHz11 MbpsDSSS802.11g2.4 GHz54 MbpsOFDM PBCCWifi Hardware ICTP School on Radio Based Networking ... Trieste 2005Sebastian Bttrich wire.less.dk – slide3Page 4CriteriaHow to choose the right standard – what are a b and g good for?802.11boldest robust good for indoors and outdoors cheapest802.11gsame frequency as 802.11b higher bandwidth BUT because ofODFM a lot less robust for outdoor longhaul links! For this it isnot a good choice!802.11abecause of higher frequency it does not go through obstacles aswell. But it makes for excellent high bandwidth longhaul linkswhen LOS is given.Indoors it suffers from LOS problems.Wifi Hardware ICTP School on Radio Based Networking ... Trieste 2005Sebastian Bttrich wire.less.dk – slide4Page 5CriteriaHow to choose standards and productsAs always: your requirements – what do you wanna do?Budget & availabilityespecially for wireless gear: consider price development!don t buy for 500 today what next year might cost 100.Legal considerations:what is legally & practically :) possible where you are?Where applicable: support/drivers for your Operating system?Environmental specs: temperature! humidity!Power consumptionWifi Hardware ICTP School on Radio Based Networking ... Trieste 2005Sebastian Bttrich wire.less.dk – slide5Page 6TypesAccess Point(includes Acc ...

Source: wireless.ictp.trieste.it

 

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