MIMO technology and "n"

can somebody please give me a quick explanation of MIMO for wireless networking and how "n" compares to b/g.

also, is MIMO part of "n", or can it be used in b/g products

 

You know Google or any Internet search works wonders: http://search.yahoo.com/search?p=ex...e=n-2610472155_q-4z1lIzFOw0ravYqNSj3u/wABAA@@

In a nutshell, Mimo tech is The cure for the problem, according to a number of companies, is an innovation called MIMO, short for multiple input, multiple output (read our explanation of MIMO) . The new technology, already on the shelves in routers and adapters from Belkin (reviewed here), uses a number of antennas to send multiple signals as a way to significantly increase the speed and range of a wireless network. Tests of Belkin's MIMO products found they nearly doubled the speed of the fastest 802.11g products and provided superior range.

As for N, In response to growing market demand for higher-performance wireless local area networks (WLANs), the Institute of Electrical and Electronics Engineers - Standards Association (IEEE-SA) approved the creation of the IEEE 802.11 Task Group N (802.11 TGn) during the second half of 2003. The scope of TGn's objective is to define modifications to the Physical Layer and Medium Access Control Layer (PHY/MAC) that deliver a minimum of 100 megabit-per-second (Mbps) throughput at the MAC SAP (top of the MAC; see Table 1, below).

This minimum throughput requirement represents an approximate 4x leap in WLAN throughput performance compared to today's 802.11a/g networks. TGn's purpose for this next step in WLAN performance is to improve the user experience with existing WLAN applications while enabling new applications and market segments. At the same time, TGn expects a smooth adoption transition by requiring backward compatibility with existing IEEE WLAN legacy solutions (802.11a/b/g).