Block diagonalization and user selection for MIMO broadcast channels with limited feedback

Moonsik Min; Yo Seb Jeon; Gi Hong Im

doi:10.1109/ICC.2015.7248613

Block diagonalization and user selection for MIMO broadcast channels with limited feedback

Moonsik Min, Yo Seb Jeon, Gi Hong Im

School of Electronics Engineering

Pohang University of Science and Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

We consider limited-feedback-based block diagonalization (BD) and user selection for multiple antenna broadcast channels. With limited feedback, the conventional channel norm can not be a good estimate for channel quality of each user, because multiuser interference is not completely eliminated by using BD under limited channel direction information. Therefore, we need an appropriate channel quality indicator (CQI) to increase the diversity gain achieved by multiuser scheduling. To this end, we consider a determinant-based instantaneous channel capacity and propose a new CQI by taking an expectation over precoding matrices that can not be known at the feedback stage. Simulation results show that the sum rate with the proposed CQI is much higher than the sum rate with conventional CQIs.

Original language	English
Title of host publication	2015 IEEE International Conference on Communications, ICC 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1964-1969
Number of pages	6
ISBN (Electronic)	9781467364324
DOIs	https://doi.org/10.1109/ICC.2015.7248613
State	Published - 9 Sep 2015
Event	IEEE International Conference on Communications, ICC 2015 - London, United Kingdom Duration: 8 Jun 2015 → 12 Jun 2015

Publication series

Name	IEEE International Conference on Communications
Volume	2015-September
ISSN (Print)	1550-3607

Conference

Conference	IEEE International Conference on Communications, ICC 2015
Country/Territory	United Kingdom
City	London
Period	8/06/15 → 12/06/15

Access to Document

10.1109/ICC.2015.7248613

Cite this

Min, M., Jeon, Y. S., & Im, G. H. (2015). Block diagonalization and user selection for MIMO broadcast channels with limited feedback. In 2015 IEEE International Conference on Communications, ICC 2015 (pp. 1964-1969). Article 7248613 (IEEE International Conference on Communications; Vol. 2015-September). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICC.2015.7248613

@inproceedings{c8e9da0c8e824bf6964f6a7862b9a9e1,

title = "Block diagonalization and user selection for MIMO broadcast channels with limited feedback",

abstract = "We consider limited-feedback-based block diagonalization (BD) and user selection for multiple antenna broadcast channels. With limited feedback, the conventional channel norm can not be a good estimate for channel quality of each user, because multiuser interference is not completely eliminated by using BD under limited channel direction information. Therefore, we need an appropriate channel quality indicator (CQI) to increase the diversity gain achieved by multiuser scheduling. To this end, we consider a determinant-based instantaneous channel capacity and propose a new CQI by taking an expectation over precoding matrices that can not be known at the feedback stage. Simulation results show that the sum rate with the proposed CQI is much higher than the sum rate with conventional CQIs.",

author = "Moonsik Min and Jeon, {Yo Seb} and Im, {Gi Hong}",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; IEEE International Conference on Communications, ICC 2015 ; Conference date: 08-06-2015 Through 12-06-2015",

year = "2015",

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day = "9",

doi = "10.1109/ICC.2015.7248613",

language = "English",

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Min, M, Jeon, YS & Im, GH 2015, Block diagonalization and user selection for MIMO broadcast channels with limited feedback. in 2015 IEEE International Conference on Communications, ICC 2015., 7248613, IEEE International Conference on Communications, vol. 2015-September, Institute of Electrical and Electronics Engineers Inc., pp. 1964-1969, IEEE International Conference on Communications, ICC 2015, London, United Kingdom, 8/06/15. https://doi.org/10.1109/ICC.2015.7248613

Block diagonalization and user selection for MIMO broadcast channels with limited feedback. / Min, Moonsik; Jeon, Yo Seb; Im, Gi Hong.
2015 IEEE International Conference on Communications, ICC 2015. Institute of Electrical and Electronics Engineers Inc., 2015. p. 1964-1969 7248613 (IEEE International Conference on Communications; Vol. 2015-September).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - We consider limited-feedback-based block diagonalization (BD) and user selection for multiple antenna broadcast channels. With limited feedback, the conventional channel norm can not be a good estimate for channel quality of each user, because multiuser interference is not completely eliminated by using BD under limited channel direction information. Therefore, we need an appropriate channel quality indicator (CQI) to increase the diversity gain achieved by multiuser scheduling. To this end, we consider a determinant-based instantaneous channel capacity and propose a new CQI by taking an expectation over precoding matrices that can not be known at the feedback stage. Simulation results show that the sum rate with the proposed CQI is much higher than the sum rate with conventional CQIs.

AB - We consider limited-feedback-based block diagonalization (BD) and user selection for multiple antenna broadcast channels. With limited feedback, the conventional channel norm can not be a good estimate for channel quality of each user, because multiuser interference is not completely eliminated by using BD under limited channel direction information. Therefore, we need an appropriate channel quality indicator (CQI) to increase the diversity gain achieved by multiuser scheduling. To this end, we consider a determinant-based instantaneous channel capacity and propose a new CQI by taking an expectation over precoding matrices that can not be known at the feedback stage. Simulation results show that the sum rate with the proposed CQI is much higher than the sum rate with conventional CQIs.

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BT - 2015 IEEE International Conference on Communications, ICC 2015

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - IEEE International Conference on Communications, ICC 2015

Y2 - 8 June 2015 through 12 June 2015

ER -

Block diagonalization and user selection for MIMO broadcast channels with limited feedback

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