Cross layer implementation of a multi-user MIMO test-bed
2010 (English)Conference paper (Refereed)
This paper describes an implementation of a realtime multi-user multiple-input multiple-output (MU-MIMO) communication system, with cross-layer channel-aware scheduling. The system is implemented using software reconfigurable nodes that may be configured as either user terminals, or as base stations, communicating in the GSM 1800 uplink band. Three different commonly used scheduling algorithms (based on channel state information fed back by the receiver nodes) are studied and compared experimentally for three different signal to noise ratios in an indoor non line of sight environment. It is shown that channel-aware scheduling increases not only the system throughput, but also the fairness. Further, using the possibility of changing antenna polarization through software controlled switches, the multiuser gains may be increased even further, both in total throughput as well as fairness.
Place, publisher, year, edition, pages
2010. Vol. WCNC, 1-6 p.
Channelaware Scheduling, Cross-layer, Cross-layer implementation, MU-MIMO, Multi-user, Multi-user MIMO, Multiple-input-multiple-output, Non-line-of-sight environments, Real time, Receiver nodes, Reconfigurable nodes, System throughput, User terminals, Adaptive antenna arrays, Antennas, Communication systems, Computer software, MIMO systems, Scheduling algorithms, Signal receivers, Signal to noise ratio, Wireless telecommunication systems, Wireless networks
IdentifiersURN: urn:nbn:se:kth:diva-35646DOI: 10.1109/WCNC.2010.5506396ISI: 000299203101085ScopusID: 2-s2.0-77955014676ISBN: 978-142446398-5OAI: oai:DiVA.org:kth-35646DiVA: diva2:429597
IEEE Wireless Communications and Networking Conference 2010, WCNC 2010, Sydney, Australia, 18-21 April, 2010
QC 201107052011-07-052011-07-042012-09-05Bibliographically approved