Channel quality feedback schemes for 3GPP's Evolved-UTRA downlink
2006 (English)In: IEEE GLOBECOM 2006: 2006 Global Telecommunications Conference; San Francisco, CA, USA, 27 November - 1 December 2006, Piscataway, NJ: IEEE Communications Society, 2006, article id 4151293Conference paper, Published paper (Refereed)
Abstract [en]
Today's packet-based cellular systems typically are equipped with a channel quality reporting mechanism that supports scheduling and adaptive modulation/coding. When resources are scheduled not only In time but also In frequency the design of the return channel becomes intricate. The feedback signalling must balance improved cell-throughput with deteriorated spectral efficiency In the return link due to excessive signalling. In this contribution we examine system simulation results for the downlink of 3GPP's long-term evolution system equipped with various signalling schemes. The simulations results show that for a certain uplink load In bits/s/Hz, emphasizing the quality of the mobile's best channel instants (assigning these with more signalling bits) provides about 12% higher downlink throughput than capturing the quality of all channel Instants equally well. Moreover, about 95% of the throughput provided by an ideal reference feedback scheme Is obtained.
Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2006. article id 4151293
Series
Globecom. I E E E Conference and Exhibition, ISSN 1930-529X
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:ltu:diva-28344DOI: 10.1109/GLOCOM.2006.663Scopus ID: 2-s2.0-50949103736Local ID: 21e58e51-823a-46f9-825d-3a52c7f75426ISBN: 1-4244-0356-1 (print)ISBN: 1-4244-0357-X (electronic)OAI: oai:DiVA.org:ltu-28344DiVA, id: diva2:1001540
Conference
IEEE GLOBECOM : 27/11/2006 - 01/12/2006
Note
Godkänd; 2006; 20140610 (andbra)
2016-09-302016-09-302022-03-23Bibliographically approved