Feedback Compression Schemes for Downlink Carrier Aggregation in LTE-Advanced

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

Publikation: Bidrag til tidsskriftKonferenceartikel i tidsskriftForskningpeer review

4 Citationer (Scopus)
1174 Downloads (Pure)

Resumé

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
OriginalsprogEngelsk
TidsskriftI E E E V T S Vehicular Technology Conference. Proceedings
ISSN1550-2252
DOI
StatusUdgivet - 2011
Begivenhed2011 IEEE 74th Vehicular Technology Conference: VTC2011-Fall - San Francisco, USA
Varighed: 5 sep. 20118 sep. 2011
Konferencens nummer: 74

Konference

Konference2011 IEEE 74th Vehicular Technology Conference
Nummer74
LandUSA
BySan Francisco
Periode05/09/201108/09/2011

Fingerprint

LTE-advanced
Aggregation
Channel state information
Agglomeration
Compression
Channel State Information
Feedback
Number of Components
Linearly
Traffic
Scenarios
Evaluate

Citer dette

@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",
author = "Nguyen, {Hung Tuan} and Istvan Kovac and Yuanye Wang and Klaus Pedersen",
year = "2011",
doi = "10.1109/VETECF.2011.6093213",
language = "English",
journal = "I E E E V T S Vehicular Technology Conference. Proceedings",
issn = "1550-2252",
publisher = "IEEE",

}

Feedback Compression Schemes for Downlink Carrier Aggregation in LTE-Advanced. / Nguyen, Hung Tuan; Kovac, Istvan; Wang, Yuanye; Pedersen, Klaus.

I: I E E E V T S Vehicular Technology Conference. Proceedings, 2011.

Publikation: Bidrag til tidsskriftKonferenceartikel i tidsskriftForskningpeer review

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

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

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

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

SN - 1550-2252

ER -