3D beamforming for capacity boosting in LTE-advanced system

Hyoungju Ji, Byungju Lee, Byonghyo Shim, Young Han Nam, Youngwoo Kwak, Hoondong Noh, Choelkyu Shin

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

3 Citations (Scopus)

Abstract

LTE-Advanced system has been deployed with 2 and 4 transmission antennas (Tx) while the specification supports up to 8Tx. Due to deployment space, antenna dimension and complexity, operators have not been interested in the deployment of 8Tx systems. Recently, three dimensional (3D) beamforming using 2D active antenna array has attracted significant attention in the wireless industry. By incorporating 2D active array into LTE-A systems, the system offers freedom in controlling radiation on elevation and horizontal dimension. In addition, 2D array antenna increases the number of antennas without exceeding form-factor where the conventional antennas are deployed. When the number of antennas increases in the form of 2D arrangement, spatial separation can be realized simultaneously in horizontal and elevation domain and vertical beam-steering can increase SINR of UEs in high floors. In this paper, we study the system operations and implementations for supporting 3D beamforming with 8Tx antennas. In our schemes, by reusing the conventional CSI feedback framework, the system can operate 2D active array without harming the backward compatibility. Evaluation results show that 3D beamforming provides capacity boosting over the conventional 2D beamforming systems while keeping same antenna structure.

Original languageEnglish
Title of host publicationIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2344-2348
Number of pages5
Volume2015-December
ISBN (Print)9781467367820
DOIs
Publication statusPublished - 2015 Dec 1
Externally publishedYes
Event26th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2015 - Hong Kong, China
Duration: 2015 Aug 302015 Sep 2

Other

Other26th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2015
CountryChina
CityHong Kong
Period15/8/3015/9/2

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Keywords

  • beamforming
  • LTE
  • Multi-user transmission

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Ji, H., Lee, B., Shim, B., Nam, Y. H., Kwak, Y., Noh, H., & Shin, C. (2015). 3D beamforming for capacity boosting in LTE-advanced system. In IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC (Vol. 2015-December, pp. 2344-2348). [7343690] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PIMRC.2015.7343690