Long-term channel information-based CoMP beamforming in LTE-advanced systems

Hui Won Je, Hyewon Lee, Kyuhwan Kwak, Sunghyun Choi, Young Jun Hong, Bruno Clercks

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Citations (Scopus)

Abstract

Coordinated multi-point (CoMP) transmission and reception is a network multiple-input multiple- output (MIMO) technology considered in 3GPP LTE- Advanced systems. In order to improve reliability and capacity of the services for the user equipments (UEs) at the cell edges, CoMP utilizes cooperation among neighboring enhanced node Bs (eNBs). Accordingly, backhaul delay for sharing control signals among eNBs should be carefully handled as UE mobility increases in a fading channel environment; otherwise, CoMP operations derived from inaccurate channel state information (CSI) of neighboring eNBs can severely degrade the system performance. We propose CoMP beamforming schemes using long-term CSI such as spatial correlation matrices instead of instantaneous CSI of neighboring cells. Since long- term CSI varies relatively slowly, the proposed scheme is inherently robust even when a UE moves at a high speed and/or the backhaul delay is large. Using a multi-cell simulator which reflects realistic CoMP system environments, the performance gain of the proposed schemes is evaluated and discussed.

Original languageEnglish
Title of host publication2011 IEEE Global Telecommunications Conference, GLOBECOM 2011
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011 - Houston, TX, United States
Duration: 2011 Dec 52011 Dec 9

Other

Other54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011
CountryUnited States
CityHouston, TX
Period11/12/511/12/9

Fingerprint

Channel state information
Beamforming
Fading channels
Simulators

Keywords

  • CoMP
  • coordinated beamforming
  • long-term CSI
  • MIMO
  • multi-cell

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Je, H. W., Lee, H., Kwak, K., Choi, S., Hong, Y. J., & Clercks, B. (2011). Long-term channel information-based CoMP beamforming in LTE-advanced systems. In 2011 IEEE Global Telecommunications Conference, GLOBECOM 2011 [6134356] https://doi.org/10.1109/GLOCOM.2011.6134356

Long-term channel information-based CoMP beamforming in LTE-advanced systems. / Je, Hui Won; Lee, Hyewon; Kwak, Kyuhwan; Choi, Sunghyun; Hong, Young Jun; Clercks, Bruno.

2011 IEEE Global Telecommunications Conference, GLOBECOM 2011. 2011. 6134356.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Je, HW, Lee, H, Kwak, K, Choi, S, Hong, YJ & Clercks, B 2011, Long-term channel information-based CoMP beamforming in LTE-advanced systems. in 2011 IEEE Global Telecommunications Conference, GLOBECOM 2011., 6134356, 54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011, Houston, TX, United States, 11/12/5. https://doi.org/10.1109/GLOCOM.2011.6134356
Je HW, Lee H, Kwak K, Choi S, Hong YJ, Clercks B. Long-term channel information-based CoMP beamforming in LTE-advanced systems. In 2011 IEEE Global Telecommunications Conference, GLOBECOM 2011. 2011. 6134356 https://doi.org/10.1109/GLOCOM.2011.6134356
Je, Hui Won ; Lee, Hyewon ; Kwak, Kyuhwan ; Choi, Sunghyun ; Hong, Young Jun ; Clercks, Bruno. / Long-term channel information-based CoMP beamforming in LTE-advanced systems. 2011 IEEE Global Telecommunications Conference, GLOBECOM 2011. 2011.
@inproceedings{6808d03f65684d129aa6366c4fbf388b,
title = "Long-term channel information-based CoMP beamforming in LTE-advanced systems",
abstract = "Coordinated multi-point (CoMP) transmission and reception is a network multiple-input multiple- output (MIMO) technology considered in 3GPP LTE- Advanced systems. In order to improve reliability and capacity of the services for the user equipments (UEs) at the cell edges, CoMP utilizes cooperation among neighboring enhanced node Bs (eNBs). Accordingly, backhaul delay for sharing control signals among eNBs should be carefully handled as UE mobility increases in a fading channel environment; otherwise, CoMP operations derived from inaccurate channel state information (CSI) of neighboring eNBs can severely degrade the system performance. We propose CoMP beamforming schemes using long-term CSI such as spatial correlation matrices instead of instantaneous CSI of neighboring cells. Since long- term CSI varies relatively slowly, the proposed scheme is inherently robust even when a UE moves at a high speed and/or the backhaul delay is large. Using a multi-cell simulator which reflects realistic CoMP system environments, the performance gain of the proposed schemes is evaluated and discussed.",
keywords = "CoMP, coordinated beamforming, long-term CSI, MIMO, multi-cell",
author = "Je, {Hui Won} and Hyewon Lee and Kyuhwan Kwak and Sunghyun Choi and Hong, {Young Jun} and Bruno Clercks",
year = "2011",
doi = "10.1109/GLOCOM.2011.6134356",
language = "English",
isbn = "9781424492688",
booktitle = "2011 IEEE Global Telecommunications Conference, GLOBECOM 2011",

}

TY - GEN

T1 - Long-term channel information-based CoMP beamforming in LTE-advanced systems

AU - Je, Hui Won

AU - Lee, Hyewon

AU - Kwak, Kyuhwan

AU - Choi, Sunghyun

AU - Hong, Young Jun

AU - Clercks, Bruno

PY - 2011

Y1 - 2011

N2 - Coordinated multi-point (CoMP) transmission and reception is a network multiple-input multiple- output (MIMO) technology considered in 3GPP LTE- Advanced systems. In order to improve reliability and capacity of the services for the user equipments (UEs) at the cell edges, CoMP utilizes cooperation among neighboring enhanced node Bs (eNBs). Accordingly, backhaul delay for sharing control signals among eNBs should be carefully handled as UE mobility increases in a fading channel environment; otherwise, CoMP operations derived from inaccurate channel state information (CSI) of neighboring eNBs can severely degrade the system performance. We propose CoMP beamforming schemes using long-term CSI such as spatial correlation matrices instead of instantaneous CSI of neighboring cells. Since long- term CSI varies relatively slowly, the proposed scheme is inherently robust even when a UE moves at a high speed and/or the backhaul delay is large. Using a multi-cell simulator which reflects realistic CoMP system environments, the performance gain of the proposed schemes is evaluated and discussed.

AB - Coordinated multi-point (CoMP) transmission and reception is a network multiple-input multiple- output (MIMO) technology considered in 3GPP LTE- Advanced systems. In order to improve reliability and capacity of the services for the user equipments (UEs) at the cell edges, CoMP utilizes cooperation among neighboring enhanced node Bs (eNBs). Accordingly, backhaul delay for sharing control signals among eNBs should be carefully handled as UE mobility increases in a fading channel environment; otherwise, CoMP operations derived from inaccurate channel state information (CSI) of neighboring eNBs can severely degrade the system performance. We propose CoMP beamforming schemes using long-term CSI such as spatial correlation matrices instead of instantaneous CSI of neighboring cells. Since long- term CSI varies relatively slowly, the proposed scheme is inherently robust even when a UE moves at a high speed and/or the backhaul delay is large. Using a multi-cell simulator which reflects realistic CoMP system environments, the performance gain of the proposed schemes is evaluated and discussed.

KW - CoMP

KW - coordinated beamforming

KW - long-term CSI

KW - MIMO

KW - multi-cell

UR - http://www.scopus.com/inward/record.url?scp=84863122658&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863122658&partnerID=8YFLogxK

U2 - 10.1109/GLOCOM.2011.6134356

DO - 10.1109/GLOCOM.2011.6134356

M3 - Conference contribution

AN - SCOPUS:84863122658

SN - 9781424492688

BT - 2011 IEEE Global Telecommunications Conference, GLOBECOM 2011

ER -