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Interference Alignment over a Combination of Space and Frequency
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-7724-5896
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-3599-5584
2013 (English)In: 2013 IEEE International Conference on Communications Workshops, ICC 2013, IEEE Communications Society, 2013, 149-153 p.Conference paper, Published paper (Refereed)
Abstract [en]

Time or frequency extensions are integral in most information theoretic studies of interference alignment (IA), but a large majority of the more practically oriented studies have focused on narrowband space-only schemes. As wideband systems are now common, it is natural to investigate IA for frequency extended multiple antenna systems where precoding is performed over a combination of space and frequency dimensions. For this setting, we derive a necessary condition on IA feasibility using the properness framework and investigate the sum rate performance using simulations. Applying frequency extensions to multiple antenna systems allows for some additional users to be served interference-free, but our numerical results with synthetic channels indicate a practically more important improvement in terms of a power gain. Emulating a particular scenario using channel measurements, with real-world path losses and channel correlations, we see similar performance gains.

Place, publisher, year, edition, pages
IEEE Communications Society, 2013. 149-153 p.
Keyword [en]
interference alignment, frequency extensions, space-frequency precoding, mimo, ofdm, channel measurements
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-119279DOI: 10.1109/ICCW.2013.6649218Scopus ID: 2-s2.0-84890878723ISBN: 978-146735753-1 (print)OAI: oai:DiVA.org:kth-119279DiVA: diva2:610509
Conference
IEEE International Conference on Communications 2013: IEEE ICC'13 - Workshop Beyond LTE-A, Budapest, June 9-13, 2013
Projects
HIATUS
Funder
EU, FP7, Seventh Framework Programme, 265578
Note

(c) 2013 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

QC 20130430

Available from: 2013-04-30 Created: 2013-03-11 Last updated: 2014-02-04Bibliographically approved

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