A Transceiver Design for Spectrum Sharing in Mixed Numerology Environments

Jaeyoung Choi; Beomju Kim; Kwonjong Lee; Daesik Hong

doi:10.1109/TWC.2019.2907239

A Transceiver Design for Spectrum Sharing in Mixed Numerology Environments

Jaeyoung Choi, Beomju Kim, Kwonjong Lee, Daesik Hong

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

We consider a mixed numerology spectrum sharing (SS) system where the users have different subcarrier spacing (SCS). Unlike in single numerology SS systems, mixed numerology SS systems suffer from inter-numerology interference (INI). We first derive the interference pattern and find that the variance of interference energy increases due to the difference in SCS. This increase in variance negatively affects decoding performance, since the interference energy is unbalanced between subcarriers. However, previous works on this issue did not take this interference pattern into account for interference management. In order to suppress the increase in variance of the interference energy, we propose a transceiver structure for large SCS users by using simple cyclic shift and frequency shift operations. The proposed transceiver disperses the effect of INI, reducing the variance in the interference energy. From the derived distribution characteristics of the interference energy in closed-form expressions, we show that the proposed transceiver achieves better decoding performance.

Original language	English
Article number	8678670
Pages (from-to)	2707-2721
Number of pages	15
Journal	IEEE Transactions on Wireless Communications
Volume	18
Issue number	5
DOIs	https://doi.org/10.1109/TWC.2019.2907239
Publication status	Published - 2019 May

Bibliographical note

Funding Information:
Manuscript received July 20, 2018; revised November 28, 2018, March 6, 2019, and March 13, 2019; accepted March 13, 2019. Date of publication April 1, 2019; date of current version May 8, 2019. This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT) under Grant 2018R1A2A1A05021029, in part by the Institute for Information and communications Technology Promotion (IITP) grant funded by the Korean Government (MSIP) (Development on the core technologies of transmission, modulation and coding with low-power and low-complexity for massive connectivity in the IoT environment) under Grant 2016-0-00181, and in part by the Samsung Research in Samsung Electronics Co., Ltd. The associate editor coordinating the review of this paper and approving it for publication was W. Zhang. (Corresponding author: Daesik Hong.) J. Choi, B. Kim, and D. Hong are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea (e-mail: jychoi1989@yonsei.ac.kr; kimbj320@yonsei.ac.kr; daesikh@yonsei.ac.kr).

Publisher Copyright:
© 2019 IEEE.

All Science Journal Classification (ASJC) codes

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

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title = "A Transceiver Design for Spectrum Sharing in Mixed Numerology Environments",

abstract = "We consider a mixed numerology spectrum sharing (SS) system where the users have different subcarrier spacing (SCS). Unlike in single numerology SS systems, mixed numerology SS systems suffer from inter-numerology interference (INI). We first derive the interference pattern and find that the variance of interference energy increases due to the difference in SCS. This increase in variance negatively affects decoding performance, since the interference energy is unbalanced between subcarriers. However, previous works on this issue did not take this interference pattern into account for interference management. In order to suppress the increase in variance of the interference energy, we propose a transceiver structure for large SCS users by using simple cyclic shift and frequency shift operations. The proposed transceiver disperses the effect of INI, reducing the variance in the interference energy. From the derived distribution characteristics of the interference energy in closed-form expressions, we show that the proposed transceiver achieves better decoding performance.",

author = "Jaeyoung Choi and Beomju Kim and Kwonjong Lee and Daesik Hong",

note = "Funding Information: Manuscript received July 20, 2018; revised November 28, 2018, March 6, 2019, and March 13, 2019; accepted March 13, 2019. Date of publication April 1, 2019; date of current version May 8, 2019. This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT) under Grant 2018R1A2A1A05021029, in part by the Institute for Information and communications Technology Promotion (IITP) grant funded by the Korean Government (MSIP) (Development on the core technologies of transmission, modulation and coding with low-power and low-complexity for massive connectivity in the IoT environment) under Grant 2016-0-00181, and in part by the Samsung Research in Samsung Electronics Co., Ltd. The associate editor coordinating the review of this paper and approving it for publication was W. Zhang. (Corresponding author: Daesik Hong.) J. Choi, B. Kim, and D. Hong are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea (e-mail: jychoi1989@yonsei.ac.kr; kimbj320@yonsei.ac.kr; daesikh@yonsei.ac.kr). Publisher Copyright: {\textcopyright} 2019 IEEE.",

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A Transceiver Design for Spectrum Sharing in Mixed Numerology Environments

Abstract

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