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An 802.11n-only network may be impractical for many users because they need to support legacy equipment that still is 802.11b/g only. In a mixed-mode system, an optimal solution would be to use a dual-radio access point and place the 802.11b/g traffic on the 2.4 GHz radio and the 802.11n traffic on the 5 GHz radio. [20]
Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.
The 802.11n standard was retroactively labelled as Wi-Fi 4 by the Wi-Fi Alliance. [45] [46] The standard added support for multiple-input multiple-output antennas (MIMO). 802.11n operates on both the 2.4 GHz and the 5 GHz bands. Support for 5 GHz bands is optional. Its net data rate ranges from 54 Mbit/s to 600 Mbit/s.
IEEE 802.15.4-2006 (low-level protocol definitions corresponding to the OSI model physical and link layers. Zigbee, 6LoWPAN, etc. build upward in the protocol stack and correspond to the network and transport layers.)
Preliminary 802.11n working became available in many routers in 2008. This technology can use multiple antennas to target one or more sources to increase speed. This is known as MIMO, Multiple Input Multiple Output. In tests, the speed increase was said to only occur over short distances rather than the long range needed for most point-to-point ...
The main difference is the draft 802.11n wireless interface, ... 5 GHz: 3.81 dBi) 1 PIFA antenna (Bluetooth: 3.60 dBi, 5GHz: 5.10dBi) WRT32X 3200ACM Gaming Router.
Wi-Fi (/ ˈ w aɪ f aɪ /) [1] [a] is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves.
In 2006, Atheros announced its XSPAN product line, [7] which featured a single-chip, triple-radio for 802.11n. In this same year, they began to collaborate with Qualcomm on a product for CDMA and WCDMA-enabled handsets. In 2008, Atheros announced the Align 1-stream 802.11n product line for PCs and networking equipment. [8]
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