University of Oulu

O. Tervo, L. Trant, S. Chatzinotas, B. Ottersten and M. Juntti, "Multigroup Multicast Beamforming and Antenna Selection with Rate-Splitting in Multicell Systems," 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Kalamata, 2018, pp. 1-5, doi: 10.1109/SPAWC.2018.8445878

Multigroup multicast beamforming and antenna selection with rate-splitting in multicell systems

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Author: Tervo, Oskari1; Tran, Le-Nam2; Chatzinotas, Symeon3;
Organizations: 1Centre for Wireless Communications, University of Oulu, Oulu, Finland
2The School of Electrical and Electronic Engineering, University College Dublin, Dublin 4, Ireland
3the Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.1 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2020050825739
Language: English
Published: Available from Curran Associates, 2018
Publish Date: 2020-05-08
Description:

Abstract

This paper studies energy-efficient joint coordinated beamforming and antenna selection in multi-cell multi-user multigroup multicast multiple-input single-output systems. We focus on interference-limited scenarios, e.g., when the number of radio frequency (RF) chains is of the same order as the number of multicasting groups. To tackle the interference, we exploit rate-splitting to divide the group messages into common and group-specific sub-messages. We propose a per-cell rate-splitting approach, where the common message is locally designed to be decoded by the in-cell users, while treated as noise by the out-cell users. We consider the case where the number of RF chains is smaller than that of antennas, and consider a switching architecture, that is, the antenna selection is employed to choose the best antennas for transmission. Numerical results illustrate the potential of the proposed approach to significantly improve the energy efficiency in the interference-limited regime.

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Series: IEEE International Workshop on Signal Processing Advances in Wireless Communications
ISSN: 2325-3789
ISSN-L: 2325-3789
ISBN: 978-1-5386-3512-4
ISBN Print: 978-1-5386-3513-1
Pages: 1 - 5
Article number: 8445878
DOI: 10.1109/SPAWC.2018.8445878
OADOI: https://oadoi.org/10.1109/SPAWC.2018.8445878
Host publication: 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
Conference: IEEE International Workshop on Signal Processing Advances in Wireless Communications
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Subjects:
Funding: This research has been financially supported by Academy of Finland 6Genesis Flagship (grant 318927), and project WiConIE. It has also supported in part by a Grant from Science Foundation Ireland under Grant number 17/CDA/4786. The first author has been supported by Walter Ahlström Foundation and Oulu University Scholarship Foundation.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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