eprintid: 10191293
rev_number: 7
eprint_status: archive
userid: 699
dir: disk0/10/19/12/93
datestamp: 2024-04-25 10:18:12
lastmod: 2024-04-25 10:18:12
status_changed: 2024-04-25 10:18:12
type: proceedings_section
metadata_visibility: show
sword_depositor: 699
creators_name: Zhou, X
creators_name: Zhu, Y
creators_name: Xia, W
creators_name: Zhang, J
creators_name: Wong, KK
title: Generalized Superimposed Pilot Enabled URLLC in the Finite Blocklength Regime
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
keywords: Geometry, 
Simulation, 
Precoding, 
Symbols, 
Interference, 
Ultra reliable low latency communication, 
Robustness
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: Conventional regular pilot (RP) scheme is not appli-cable for ultra-reliable and low-latency communication (URLLC) due to the impact of finite blocklength. In this paper, we propose to use generalized superimposed pilot (GSP) scheme for URLLC transmission in massive multi-input multi-output (mMIMO) systems. Distinguishing from the existing superimposed pilot (SP) scheme, the GSP scheme eliminates mutual interference between the pilot and data, where the data length is optimized, and the data symbols are precoded to spread over the whole transmission block. With the GSP scheme, we first formulate a weighted sum rate maximization problem by jointly optimizing the data length, pilot power, and data power and then derive closed-form results, including optimal data length and achievable rate lower bound with maximum-ratio combining (MRC) detector. Based on the closed-form results, we provide the corresponding iterative algorithm where the problem is transformed into the geometry program format by using log-function approximation method. Finally, the performance of the RP, SP, and GSP schemes are compared through simulation results, which reflect the superiority and robustness of the GSP scheme in URLLC scenarios.
date: 2024-03-21
date_type: published
publisher: IEEE
official_url: https://doi.org/10.1109/GCWkshps58843.2023.10464845
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2269912
doi: 10.1109/GCWkshps58843.2023.10464845
isbn_13: 9798350370218
lyricists_name: Wong, Kai-Kit
lyricists_id: KWONG98
actors_name: Wong, Kai-Kit
actors_id: KWONG98
actors_role: owner
full_text_status: public
pres_type: paper
publication: 2023 IEEE Globecom Workshops, GC Wkshps 2023
pagerange: 1499-1504
event_title: 2023 IEEE Globecom Workshops (GC Wkshps)
event_dates: 4 Dec 2023 - 8 Dec 2023
book_title: 2023 IEEE Globecom Workshops, GC Wkshps 2023
citation:        Zhou, X;    Zhu, Y;    Xia, W;    Zhang, J;    Wong, KK;      (2024)    Generalized Superimposed Pilot Enabled URLLC in the Finite Blocklength Regime.                     In:  2023 IEEE Globecom Workshops, GC Wkshps 2023.  (pp. pp. 1499-1504).  IEEE       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10191293/1/globalcom_2023%20%28Yongxu%29.pdf