Transmission speed 1 Gbps or more, NTT succeeded in transmission experiment of ultra high speed wireless LAN

The latest wireless LAN standard which was formulated for the realization of effective transmission speed of 100 Mbps or more and which has finally started spreadingIEEE802.11nHowever, NTT announced that it succeeded in transmission experiment of ultra high speed wireless LAN with the aim of realizing future home network.

The transmission speed has reached 1 Gbps or more, achieving high speed transfer which is inexpensive compared with wired LAN.

Details are as below.
World's first successful multi-user MIMO transmission exceeding 1 Gbit / s ~ Toward realization of home network using next generation wireless LAN (IEEE 802.11 ac) ~

According to this release, in order to realize the future home network, NTT is a wireless transmission device using the space division multiple access communication technology "multi-user MIMO (MU-MIMO)" that can simultaneously communicate with antennas of multiple terminals It seems to be working on development.

"Multi-user MIMO" aims at a wireless LAN capable of high-speed and large-capacity communication matching the capabilities of terminals at the same radio frequency, from terminals requiring high-speed processing such as high-definition video transmission to small portable terminals It is said that it succeeded for the first time in the world to process and transmit data exceeding 1 Gbps in real time.

This is the "multi-user MIMO" method in which the transmission experiment was conducted this time. Unlike the single user MIMO adopted for communication systems such as IEEE 802.11n, WiMAX, and LTE, data can be transmitted in parallel by multiple terminals.


In this experiment, we realized real-time wireless transmission with a maximum transmission speed of 1.62 Gbps in total by allowing up to 6 terminals to communicate at the same time in the optimum state according to the number of antennas.


NTT is promoting the standardization activity (scheduled to be completed in December 2012) of the next generation wireless LAN standard "IEEE 802.11ac" targeting system throughput of 1 Gbps or more and is one of the items to consider for standardization , We will promote R & D on interference control technology etc. in environments where wireless LAN stations such as condominiums are installed at high density.