After almost a year of acrimonious, behind-the-scenes wrangling, the IEEE 802.11n Working Group has approved draft 2.0 of the standard – with 83% of members voting in its favour.

Computerworld reports that this could open the door for vendors to start shipping 100+Mbit/sec Lan products in the second half of the year.
At the heart of the new standard is a technique called MIMO (multiple-input, multiple-output) which takes a stream of data, separates it through digital signal processing into several streams, and transmits it over two or more antennas. The streams are then received by two or more antennas and reassembled into the original. But because of how this is done, and the way MIMO antennas exploit radio reflections called multipath, much more data can be packed into these transmissions.
The IEEE standard originally called for a minimum of 100+Mbit/sec throughput, the report says, but so-called Draft 1 or pre-11n products already on the market are delivering 140Mbit/sec. to 160Mbit/sec. With more antennas, more power and other tweaks, it adds, many vendors say they expect to achieve more than 200Mbit/sec.