Downlink vertical beamforming designs for multi-user MISO systems

Wookbong Lee; San Rim Lee; Han Bae Kong; Han Jin Kim; Inkyu Lee

doi:10.1109/VTCSpring.2015.7145790

Downlink vertical beamforming designs for multi-user MISO systems

Wookbong Lee, San Rim Lee, Han Bae Kong, Han Jin Kim, Inkyu Lee

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

1 Citation (Scopus)

Abstract

In this paper, we study a transmit beamforming technique for multiple input single output downlink multi-user systems with directional antennas where a transmit antenna gain is determined in three dimensional coordinates. For a multiuser active antenna system, beamforming designs to maximize the weighted sum rate are proposed by optimizing the transmit antenna gain and power allocation. Since finding joint optimal parameters requires prohibitively high computational complexity, we separate the optimization problem into two sub-problems of the vertical beamforming and the power allocation. Then a simple vertical beamforming algorithm based on a high signalto- noise ratio assumption is presented. Also, for a multi-user passive antenna system, we provide a beamforming scheme which employs a multi-sector concept. Simulation results show that the proposed beamforming schemes outperform the conventional beamforming schemes.

Original language	English
Title of host publication	2015 IEEE 81st Vehicular Technology Conference, VTC Spring 2015 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479980888
DOIs	https://doi.org/10.1109/VTCSpring.2015.7145790
Publication status	Published - 2015 Jul 1
Event	81st IEEE Vehicular Technology Conference, VTC Spring 2015 - Glasgow, United Kingdom Duration: 2015 May 11 → 2015 May 14

Publication series

Name	IEEE Vehicular Technology Conference
Volume	2015
ISSN (Print)	1550-2252

Other

Other	81st IEEE Vehicular Technology Conference, VTC Spring 2015
Country/Territory	United Kingdom
City	Glasgow
Period	15/5/11 → 15/5/14

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Access to Document

10.1109/VTCSpring.2015.7145790

Cite this

Lee, W., Lee, S. R., Kong, H. B., Kim, H. J., & Lee, I. (2015). Downlink vertical beamforming designs for multi-user MISO systems. In 2015 IEEE 81st Vehicular Technology Conference, VTC Spring 2015 - Proceedings Article 7145790 (IEEE Vehicular Technology Conference; Vol. 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTCSpring.2015.7145790

Downlink vertical beamforming designs for multi-user MISO systems. / Lee, Wookbong; Lee, San Rim; Kong, Han Bae et al.
2015 IEEE 81st Vehicular Technology Conference, VTC Spring 2015 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2015. 7145790 (IEEE Vehicular Technology Conference; Vol. 2015).

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

Lee, W, Lee, SR, Kong, HB, Kim, HJ & Lee, I 2015, Downlink vertical beamforming designs for multi-user MISO systems. in 2015 IEEE 81st Vehicular Technology Conference, VTC Spring 2015 - Proceedings., 7145790, IEEE Vehicular Technology Conference, vol. 2015, Institute of Electrical and Electronics Engineers Inc., 81st IEEE Vehicular Technology Conference, VTC Spring 2015, Glasgow, United Kingdom, 15/5/11. https://doi.org/10.1109/VTCSpring.2015.7145790

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abstract = "In this paper, we study a transmit beamforming technique for multiple input single output downlink multi-user systems with directional antennas where a transmit antenna gain is determined in three dimensional coordinates. For a multiuser active antenna system, beamforming designs to maximize the weighted sum rate are proposed by optimizing the transmit antenna gain and power allocation. Since finding joint optimal parameters requires prohibitively high computational complexity, we separate the optimization problem into two sub-problems of the vertical beamforming and the power allocation. Then a simple vertical beamforming algorithm based on a high signalto- noise ratio assumption is presented. Also, for a multi-user passive antenna system, we provide a beamforming scheme which employs a multi-sector concept. Simulation results show that the proposed beamforming schemes outperform the conventional beamforming schemes.",

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AB - In this paper, we study a transmit beamforming technique for multiple input single output downlink multi-user systems with directional antennas where a transmit antenna gain is determined in three dimensional coordinates. For a multiuser active antenna system, beamforming designs to maximize the weighted sum rate are proposed by optimizing the transmit antenna gain and power allocation. Since finding joint optimal parameters requires prohibitively high computational complexity, we separate the optimization problem into two sub-problems of the vertical beamforming and the power allocation. Then a simple vertical beamforming algorithm based on a high signalto- noise ratio assumption is presented. Also, for a multi-user passive antenna system, we provide a beamforming scheme which employs a multi-sector concept. Simulation results show that the proposed beamforming schemes outperform the conventional beamforming schemes.

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Downlink vertical beamforming designs for multi-user MISO systems

Abstract

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