Frequency divided group beamforming with sparse space‐frequency code for above 6 GHz URLLC systems

In this study, we propose a limited feedback‐based frequency divided group beamforming with sparse space‐frequency transmit diversity coded orthogonal frequency division multiplexing (OFDM) system for ultrareliable low latency communication (URLLC) scenario. The proposed scheme has several advantage...

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Bibliographic Details
Published in:ETRI journal Vol. 44; no. 6; pp. 925 - 935
Main Authors: Yoon, Chanho, Cho, Woncheol, Chang, Kapseok, Ko, Young‐Jo
Format: Journal Article
Language:English
Published: 한국전자통신연구원 01.12.2022
Subjects:
above 6 GHz
hybrid beamforming
power allocation
URLLC
전자/정보통신공학
ISSN:1225-6463, 2233-7326
Online Access:Get full text
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Summary:In this study, we propose a limited feedback‐based frequency divided group beamforming with sparse space‐frequency transmit diversity coded orthogonal frequency division multiplexing (OFDM) system for ultrareliable low latency communication (URLLC) scenario. The proposed scheme has several advantages over the traditional hybrid beamforming approach, including not requiring downlink channel state information for baseband precoding, supporting distributed multipoint transmission structures for diversity, and reducing beam sweeping latency with little uplink overhead. These are all positive aspects of physical layer characteristics intended for URLLC. It is suggested in the system to manage the multipoint transmission structure realized by distributed panels using a power allocation method based on cooperative game theory. Link‐level simulations demonstrate that the proposed scheme offers reliability by achieving both higher diversity order and array gain in a non‐line‐of‐sight channel of selectivity and limited spatial scattering.
Bibliography:Funding information
This research was supported by the Institute of Information Communications Technology Planning Evaluation, grant/award number: 2018‐0‐00218
Institute of Information & Communications Technology Planning & Evaluation, Grant/Award Number: 2018‐0‐00218
https://doi.org/10.4218/etrij.2022-0207
ISSN:1225-6463
2233-7326
DOI:10.4218/etrij.2022-0207