eprintid: 10055175
rev_number: 25
eprint_status: archive
userid: 608
dir: disk0/10/05/51/75
datestamp: 2018-09-03 13:57:13
lastmod: 2021-11-23 01:14:56
status_changed: 2018-09-03 13:57:13
type: proceedings_section
metadata_visibility: show
creators_name: Han, Y
creators_name: Jin, S
creators_name: Zhang, J
creators_name: Zhang, J
creators_name: Wong, K-K
title: Analog beam selection schemes of DFT-based hybrid beamforming multiuser systems
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
keywords: Array signal processing, Receivers, Uplink, Discrete Fourier transforms, Fading channels, Downlink, MIMO communication
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: This paper studies analog beam selection schemes of discrete Fourier transform (DFT) based hybrid beamforming systems. We first derive approximations of the achievable rates when maximum-ratio combining (MRC) receiver and maximum-ratio transmitting (MRT) precoder are used in the uplink and downlink, respectively. It is shown that the achievable rate of the hybrid beamforming system is improved with the increase of the number of radio frequency chains. Also, it is found that the orthogonality condition among the line-of-sight (LoS) paths from different users directly determines the interference cancellation capability of the MRC receiver or the MRT precoder. Based on our analytical results, we propose two novel DFT beam selection schemes, referred to as exhausted searching and per-user selection. Numerical results show that the first scheme achieves higher rate while the second one is a simple suboptimal strategy with low complexity, which is practically more attractive.
date: 2018-03-01
date_type: published
publisher: IEEE
official_url: https://doi.org/10.23919/APCC.2017.8304065
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1565896
doi: 10.23919/APCC.2017.8304065
isbn_13: 978-1-7405-2390-5
language_elements: English
lyricists_name: Wong, Kai-Kit
lyricists_id: KWONG98
actors_name: Wong, Kai-Kit
actors_id: KWONG98
actors_role: owner
full_text_status: public
publication: 2017 23RD ASIA-PACIFIC CONFERENCE ON COMMUNICATIONS (APCC): BRIDGING THE METROPOLITAN AND THE REMOTE
pages: 6
event_title: 2017 23rd Asia-Pacific Conference on Communications (APCC)
event_location: Perth (WA), Australia
event_dates: 11 December 2017 - 13 December 2017
institution: 23rd Asia-Pacific Conference on Communications (APCC) - Bridging the Metropolitan and the Remote
book_title: The Proceedings of the 2017 23rd Asia-Pacific Conference on Communications (APCC)
citation:        Han, Y;    Jin, S;    Zhang, J;    Zhang, J;    Wong, K-K;      (2018)    Analog beam selection schemes of DFT-based hybrid beamforming multiuser systems.                     In:  The Proceedings of the 2017 23rd Asia-Pacific Conference on Communications (APCC).    IEEE       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10055175/1/Wong_Analog%20Beam%20Selection%20Schemes%20of%20DFT-based%20Hybrid%20Beamforming%20Multiuser%20Systems_AAM.pdf