Feedback Compression Schemes for Downlink Carrier Aggregation in LTE-Advanced

Hung Tuan Nguyen; Istvan Kovac; Yuanye Wang; Klaus Pedersen

doi:10.1109/VETECF.2011.6093213

Feedback Compression Schemes for Downlink Carrier Aggregation in LTE-Advanced

Hung Tuan Nguyen, Istvan Kovac, Yuanye Wang, Klaus Pedersen

Department of Electronic Systems

Research output: Contribution to journal › Conference article in Journal › Research › peer-review

6 Citations (Scopus)

1486 Downloads (Pure)

Abstract

With full channel state information (CSI) available, it has been shown that carrier aggregation (CA) in the downlink can significantly improve the data rate experienced at the user equipments (UE) [1], [2], [3], [4]. However, full CSI feedback in all component carriers (CCs) requires a large portion of the uplink
bandwidth and the feedback information increases linearly with the number of CCs. Therefore, the performance gain brought by deploying CA could be easily hindered if the amount of CSI feedback is not thoroughly controlled. In this paper we analyze several feedback overhead compression schemes in CA systems. To avoid a major re-design of the feedback schemes, only CSI compression schemes closely related to the ones specified in LTE-Release 8 and LTE-Release 9 are considered. Extensive simulations at system level were carried out to evaluate the performance of these feedback schemes in various traffic load
conditions. Different scenarios were considered to answer the questions of when and why these CSI feedback compression schemes can be applied in CA

Original language	English
Journal	I E E E V T S Vehicular Technology Conference. Proceedings
ISSN	1550-2252
DOIs	https://doi.org/10.1109/VETECF.2011.6093213
Publication status	Published - 2011
Event	VTC Fall 2011: VTC2011-Fall - San Francisco, United States Duration: 5 Sept 2011 → 8 Sept 2011 Conference number: 74

Conference

Conference	VTC Fall 2011
Number	74
Country/Territory	United States
City	San Francisco
Period	05/09/2011 → 08/09/2011

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10.1109/VETECF.2011.6093213

Feedback Compression Schemes for Downlink Carrier Aggregation in LTE AdvancedAccepted author manuscript, 204 KB

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6093213

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SAMURAI: Spectrum Aggregation and Multi-User MIMO: ReAl-world Impact: SAMURAI - EU ID: FP7-INFSO-ICT-248268
Sørensen, T. B., Cattoni, A. F., Nguyen, H. T., Tonelli, O., Deneire, L. & Berardinelli, G.
<ingen navn>
01/01/2010 → 30/06/2012
Project: Research

Cite this

@inproceedings{4122fef1ae7d4ed59151a96e4defe264,

title = "Feedback Compression Schemes for Downlink Carrier Aggregation in LTE-Advanced",

abstract = "With full channel state information (CSI) available, it has been shown that carrier aggregation (CA) in the downlink can significantly improve the data rate experienced at the user equipments (UE) [1], [2], [3], [4]. However, full CSI feedback in all component carriers (CCs) requires a large portion of the uplinkbandwidth and the feedback information increases linearly with the number of CCs. Therefore, the performance gain brought by deploying CA could be easily hindered if the amount of CSI feedback is not thoroughly controlled. In this paper we analyze several feedback overhead compression schemes in CA systems. To avoid a major re-design of the feedback schemes, only CSI compression schemes closely related to the ones specified in LTE-Release 8 and LTE-Release 9 are considered. Extensive simulations at system level were carried out to evaluate the performance of these feedback schemes in various traffic loadconditions. Different scenarios were considered to answer the questions of when and why these CSI feedback compression schemes can be applied in CA",

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doi = "10.1109/VETECF.2011.6093213",

language = "English",

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TY - GEN

T1 - Feedback Compression Schemes for Downlink Carrier Aggregation in LTE-Advanced

AU - Nguyen, Hung Tuan

AU - Kovac, Istvan

AU - Wang, Yuanye

AU - Pedersen, Klaus

N1 - Conference code: 74

PY - 2011

Y1 - 2011

N2 - With full channel state information (CSI) available, it has been shown that carrier aggregation (CA) in the downlink can significantly improve the data rate experienced at the user equipments (UE) [1], [2], [3], [4]. However, full CSI feedback in all component carriers (CCs) requires a large portion of the uplinkbandwidth and the feedback information increases linearly with the number of CCs. Therefore, the performance gain brought by deploying CA could be easily hindered if the amount of CSI feedback is not thoroughly controlled. In this paper we analyze several feedback overhead compression schemes in CA systems. To avoid a major re-design of the feedback schemes, only CSI compression schemes closely related to the ones specified in LTE-Release 8 and LTE-Release 9 are considered. Extensive simulations at system level were carried out to evaluate the performance of these feedback schemes in various traffic loadconditions. Different scenarios were considered to answer the questions of when and why these CSI feedback compression schemes can be applied in CA

AB - With full channel state information (CSI) available, it has been shown that carrier aggregation (CA) in the downlink can significantly improve the data rate experienced at the user equipments (UE) [1], [2], [3], [4]. However, full CSI feedback in all component carriers (CCs) requires a large portion of the uplinkbandwidth and the feedback information increases linearly with the number of CCs. Therefore, the performance gain brought by deploying CA could be easily hindered if the amount of CSI feedback is not thoroughly controlled. In this paper we analyze several feedback overhead compression schemes in CA systems. To avoid a major re-design of the feedback schemes, only CSI compression schemes closely related to the ones specified in LTE-Release 8 and LTE-Release 9 are considered. Extensive simulations at system level were carried out to evaluate the performance of these feedback schemes in various traffic loadconditions. Different scenarios were considered to answer the questions of when and why these CSI feedback compression schemes can be applied in CA

U2 - 10.1109/VETECF.2011.6093213

DO - 10.1109/VETECF.2011.6093213

M3 - Conference article in Journal

SN - 1550-2252

JO - I E E E V T S Vehicular Technology Conference. Proceedings

JF - I E E E V T S Vehicular Technology Conference. Proceedings

T2 - VTC Fall 2011

Y2 - 5 September 2011 through 8 September 2011

ER -

Feedback Compression Schemes for Downlink Carrier Aggregation in LTE-Advanced

Abstract

Conference

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SAMURAI: <strong>S</strong>pectrum <strong>A</strong>ggregation and <strong>M</strong>ulti-<strong>U</strong>ser MIMO: <strong>R</strong>e<strong>A</strong>l-world <strong>I</strong>mpact: <strong>SAMURAI - EU ID: FP7-INFSO-ICT-248268</strong>

Cite this

Feedback Compression Schemes for Downlink Carrier Aggregation in LTE-Advanced

Abstract

Conference

Access to Document

AUB Link

Fingerprint

Projects

SAMURAI: <strong>S</strong>pectrum <strong>A</strong>ggregation and <strong>M</strong>ulti-<strong>U</strong>ser MIMO: <strong>R</strong>e<strong>A</strong>l-world <strong>I</strong>mpact: <strong>SAMURAI - EU ID: FP7-INFSO-ICT-248268</strong>

Cite this