Spatial Interference Suppression for Shared Spectrum
2008 (English)In: ICT Mobile and Wireless Communications Summit / [ed] Paul Cunningham and Miriam Cunningham, IIMC International Information Management Corporation , 2008Conference paper (Refereed)
We consider a scenario where a (future generation) cellular system shares the spectrum with a fixed-satellite services (FSS) system or other system that has primary access to the radio spectrum. Normally, the coverage of such a cellular system will have to stay outside an exclusion zone around the FSS ground station, to keep the interference low enough. Here we investigate how spatial interference suppression can be used at a transmitting multi-antenna base station to reduce the exclusion zone and provide downlink coverage closer to the FSS ground station. The study considers both transmit schemes that exploit knowledge about the channel between the base station and mobile station, as well as schemes that only rely on partial or no channel knowledge at all. Numerical examples illustrate that the interference level for the primary system can be reduced by at least 20dB, without a major loss of quality of service within the secondary system.
Place, publisher, year, edition, pages
IIMC International Information Management Corporation , 2008.
Multi-antenna transmission, interference suppression, spectrum sharing
IdentifiersURN: urn:nbn:se:kth:diva-46549ISBN: 978-1-905824-08-3OAI: oai:DiVA.org:kth-46549DiVA: diva2:453888
ICT-MobileSummit 2008 Conference. Stockholm. June 2008
QC 201111042011-11-032011-11-032011-11-04Bibliographically approved