Accessibility statement

Network MIMO-OFDMA for next generation wireless broadband access

Next generation wireless telecommunication networks will need to provide greatly increased capacity density. A vital technique for achieving this is likely to be Network MIMO (cooperative MIMO).

We focus on the downlink channel which multiple base stations collaborate to provide a single virtual MIMO terminal (a ‘giant BS’ consists of a group of nodes) with an increased number of antennas. This approach is already included in next generation standards, but there are many problems remaining to be overcome. In particular it relies on the availability of a high capacity and reliable backhaul network, which may be difficult to provide when only wireless links are available for the backhaul. When large numbers of base stations collaborate it may also result in excessive complexity.

This project will investigate the combination of OFDMA, widely used for multiple access, with network MIMO to optimally serve a user terminal at minimal complexity, and optimise existing pre-coding methods, possibly including lattice coding. It may also involve wireless network coding techniques. It will make use of analytical and simulation techniques, based on Matlab, together with network level simulation software developed at York.

Members

  • Qinhui Huang
  • Alister Burr

Dates

  • Start: October 2013

Research