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Designs of precoding for LTE TDD using cell specific reference signals
KTH, School of Electrical Engineering (EES), Communication Theory.
2010 (English)In: 2010 IEEE Globecom Workshops, IEEE , 2010, 871-875 p.Conference paper (Refereed)
Abstract [en]

We design non-codebook-based Multiple-Input Multiple-Output (MIMO) precoding schemes using multiple cell-specific reference signals patterns for the time division duplex (TDD) mode of LTE, where channel reciprocity can be exploited. Previously proposed non-codebook-based precoding schemes typically use UE specific reference signals for demodulation. Cell specific reference signals are however always allocated for the transmission of common control signalling, mobility measurements and downlink channel quality measurements. In order to save the resources occupied by UE specific reference signals, and to simplify UE implementation, a precoder-estimation scheme and a codebook-assisted scheme are designed. The codebook-assisted scheme has the novelty of using a codebook in equalization. Link throughput simulations indicate that the codebook-assisted scheme is preferable compared to the precoder-estimation scheme and the scheme using UE specific reference signals in scenarios with moderate UE velocity.

Place, publisher, year, edition, pages
IEEE , 2010. 871-875 p.
Keyword [en]
Cell specific reference signals, Codebook, LTE, MIMO precoding, TDD
National Category
Telecommunications Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-150046DOI: 10.1109/GLOCOMW.2010.5700449ISI: 000291611300164ScopusID: 2-s2.0-79951879821ISBN: 978-1-4244-8865-0OAI: diva2:742380
2010 IEEE Globecom Workshops, GC'10, 5 December 2010 through 10 December 2010, Miami, FL, United States

QC 20140901

Available from: 2014-09-01 Created: 2014-08-29 Last updated: 2014-09-01Bibliographically approved

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ReferencesLink to record
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