|Providing inexpensive high data rate internet access to the home in rural and remote areas presents many challenges. User terminals (UTs) are scattered over large geographic areas (e.g. tens of residences per 100 km2), and the cost of deploying a wired network is considered to be prohibitive.|
|Venue||Engineers Australia Auditorium, 122 Parry Street Newcastle West, NSW|
|Date||Wednesday 13th June 2012|
|Non Members Cost||$10.00|
|Event Contact||Jo Papanicolaou|
|Contact Phone||4926 4440|
|Hosted By||The Electrical Branch|
Providing inexpensive high data rate internet access to the home in rural and remote areas presents many challenges. User terminals (UTs) are scattered over large geographic areas (e.g. tens of residences per 100 km2), and the cost of deploying a wired network is considered to be prohibitive.
Various wireless standards, such as WiMAX and LTE, have been considered as economical alternatives. However, the bandwidth efficiency practically achieved in rural areas by these standard technologies has been typically limited to less than 5 bits/s/Hz/cell. Hence either a broad frequency spectrum or a large number of access points (APs) would be required in order to serve many users with high data rates.
Multiuser multiple-input multiple-output (MU-MIMO) systems have been proposed as a solution for increasing bandwidth efficiency in wireless networks. MU-MIMO typically consists of multiple UTs, each equipped with a single antenna, and a central AP, equipped with multiple antennas. While the use of MU-MIMO has been incorporated in the latest and near future wireless standards, such as LTE-A, very few implementation works have been so far reported in the literature. Up to only two user MU-MIMO in a realistic environment had been previously demonstrated. CSIRO achieved six user MU-MIMO in an actual rural environment (Smithton, Tasmania) and twelve user MU-MIMO in a laboratory environment for the first time in the world. This talk provides an overview of the technologies and hardware demonstrator developed.
Dr Hajime Suzuki received the B.E. and M.E. degrees from the University of Electro-Communications, Tokyo, Japan, in 1993 and 1995, respectively, and Ph.D. from the University of Technology, Sydney, Australia in 1999.
He has been an active research scientist since 1999 at the CSIRO Radio Physics Laboratory in Marsfield. He was the project leader of Project 3.1, W-CDMA Scanner, of the Australian Telecommunications Cooperative Research Centre (ATcrc). He is currently the project leader of CSIRO Ngara Access developing a hardware Demonstrator that demonstrates a wireless broadband access system with long range, high data rate, and high spectral efficiency for rural areas.
Dr Suzuki is an active participant of the Australian Radio Communication Study Group 3 and of the Study Group 3 (Radio Propagation), International Telecommunication Union Radiocommunication Sector (ITU-R), particularly of the Working Party 3K (Point-to-area propagation), and was the chairman of the Subgroup 3K-3 on indoor and short-range propagation from 2002 to 2006.