Highly spectrally efficient Ngara Rural Wireless Broadband Access Demonstrator
Hajime Suzuki, Rodney A. Kendall, Kevin Anderson, Alex Grancea, David G. Humphrey, Joseph Pathikulangara, Keith J. Bengston, John C. Matthews, Craig Russell · 2012
The cost of building high data rate (≈100 Mb/s per user) wireless internet access networks in rural areas can be significantly reduced by minimizing the number of access points to be deployed, each covering a larger area with a larger user capacity. Given that the available spectrum is limited even in rural areas especially at a lower frequency (VHF and UHF), which typically has an advantage of efficiently covering a larger area, the spectral efficiency of the access system needs to be improved many times over that currently feasible by commercially available technologies. We have developed a new technology suitable for wireless internet access in rural areas that achieved a spectral efficiency of 67 bits/s/Hz, which is believed to be the highest reported in the literature, on a practical low-cost hardware. This paper describes the highly spectrally efficient Ngara Rural Wireless Broadband Access Demonstrator.