WIRELESS STANDARD 802.11.N

Wireless Standard 802.11.N



Wireless Standard 802.11.N

DIFFERENCE

802.11n, which Apple confusingly dubs "AirPort Extreme" -- identical title granted to previous 802.11g specification -- is the wireless networking benchmark sustained by Apple TV. Apple furthermore carries 802.11n on Macs beginning with Core 2 Duo-based forms (some first need enabler programs to be installed) (Sherman 2004: 41)with exclusion of iMac "Core 2 Duo" 1.83 17-Inch (IG) -- as well as Mac Pro forms if configured with an AirPort Extreme card.  In rudimentary periods, 802.11n is much quicker than 802.11g, which itself is much quicker than previous 802.11b. On business website, Apple interprets that 802.11n boasts "greater presentation, more variety, and advanced reliability". Apple furthermore notes:  Among its key innovations, 802.11n adds expertise called multiple-input multiple-output (MIMO), the pointer processing and intelligent antenna method for conveying multiple facts and numbers creeks through multiple antennas. The result? Up to five times presentation and up to two times variety in evaluation to previous 802.11g standard. 

The habitually very good BareFeats assessed Apple AirPort Extreme 802.11n groundwork position and discovered it to be "3.8 times much quicker than 802.11g setup" in real-world tests. The habitually superb MacInTouch furthermore reconsidered identical merchandise and discovered it to be considerably much quicker as well but furthermore found out several caveats and limitations that may result some users. (Sherman 2003:20)

As documented in another location on EveryMac.com, 802.11a formally is not sustained by Apple, but all Intel-based Macs work with an 802.11a network. 802.11a boasts identical theoretical pace (54 Mbps) as 802.11g, but it functions in the distinct frequency (5 GHz) and is not rearwards matching with 802.11b. (Prado & Choi 2001:977)802.11n can function on either 5 GHz frequency at full pace or on 2.4 GHz frequency in "mixed mode" which will support schemes only adept of utilising 802.11b or 802.11g, but it will slow whole mesh down to greatest pace of soonest benchmark connected.  For your convenience, major dissimilarities between 802.11b, 802.11g, 802.11a, and 802.11n are summarized below.

 

802.11g

In 2002 and 2003, WLAN goods carrying the newer benchmark called 802.11g appeared on market. 802.11g endeavours to blend best of both 802.11a and 802.11b. 802.11g carries bandwidth up to 54 Mbps, and it values 2.4 Ghz frequency for larger range. 802.11g is rearwards matching with 802.11b, (Lansford et al. 2001:20)significance that 802.11g access points will work with 802.11b wireless network adapters and vice versa.

Pros of 802.11g - very fast greatest speed; pointer variety is good and not effortlessly obstructed

Cons of 802.11g - charges more than 802.11b; appliances may hinder on unregulated pointer frequency

 

802.11n

The newest IEEE benchmark in Wi-Fi class is 802.11n. It was conceived to advance on 802.11g in allowance of bandwidth sustained by utilizing multiple wireless pointers and antennas. When this benchmark is finalized, 802.11n attachments should support facts and numbers rates of over 100 Mbps. 802.11n(Howitt 2002: 1640) furthermore boasts rather better variety over previous Wi-Fi measures due to its expanded pointer intensity. 802.11n gear will be in turn around matching with ...