Abstract
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-codebookbased 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.
Translated title of the contribution | Precoding design for LTE TDD med brug af cellespecifikke referencesignaler |
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Original language | English |
Journal | Globecom. I E E E Global Telecommunications Conference |
Volume | 2010 |
Pages (from-to) | 871-875 |
ISSN | 1930-529X |
DOIs | |
Publication status | Published - 2010 |
Event | IEEE GLOBAL COMMUNICATIONS CONFERENCE, IEEE GLOBECOM 2010 - Miami, United States Duration: 6 Dec 2010 → 10 Dec 2010 http://www.ieee-globecom.org/2010/ |
Conference
Conference | IEEE GLOBAL COMMUNICATIONS CONFERENCE, IEEE GLOBECOM 2010 |
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Country/Territory | United States |
City | Miami |
Period | 06/12/2010 → 10/12/2010 |
Internet address |
Bibliographical note
ISBN: 978-1-4244-8864-3Keywords
- cell specific reference signals
- MIMO precoding
- codebook
- LTE
- TDD