5G has achieved large-scale commercialization across the world and the global 6G research and development is accelerating. To support more new use cases, 6G mobile communication systems should satisfy extreme performance requirements far beyond 5G. The physical layer key technologies are the basis of the evolution of mobile communication systems of each generation, among which three key technologies, i.e., duplex, waveform and multiple access, are the iconic characteristics of mobile communication systems of each generation. In this paper, we systematically review the development history and trend of the three key technologies and define the Non-Orthogonal Physical Layer (NOPHY) concept for 6G, including Non-Orthogonal Duplex (NOD), Non-Orthogonal Multiple Access (NOMA) and Non-Orthogonal Waveform (NOW). Firstly, we analyze the necessity and feasibility of NOPHY from the perspective of capacity gain and implementation complexity. Then we discuss the recent progress of NOD, NOMA and NOW, and highlight several candidate technologies and their potential performance gain. Finally, combined with the new trend of 6G, we put forward a unified physical layer design based on NOPHY that well balances performance against flexibility, and point out the possible direction for the research and development of 6G physical layer key technologies.
Xiaolin HOU
DOCOMO Beijing Communications Laboratories, Co., Ltd.
Wenjia LIU
DOCOMO Beijing Communications Laboratories, Co., Ltd.
Juan LIU
DOCOMO Beijing Communications Laboratories, Co., Ltd.
Xin WANG
DOCOMO Beijing Communications Laboratories, Co., Ltd.
Lan CHEN
DOCOMO Beijing Communications Laboratories, Co., Ltd.
Yoshihisa KISHIYAMA
NTT DOCOMO, INC.
Takahiro ASAI
NTT DOCOMO, INC.
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Xiaolin HOU, Wenjia LIU, Juan LIU, Xin WANG, Lan CHEN, Yoshihisa KISHIYAMA, Takahiro ASAI, "Non-Orthogonal Physical Layer (NOPHY) Design towards 5G Evolution and 6G" in IEICE TRANSACTIONS on Communications,
vol. E105-B, no. 11, pp. 1444-1457, November 2022, doi: 10.1587/transcom.2021EBP3192.
Abstract: 5G has achieved large-scale commercialization across the world and the global 6G research and development is accelerating. To support more new use cases, 6G mobile communication systems should satisfy extreme performance requirements far beyond 5G. The physical layer key technologies are the basis of the evolution of mobile communication systems of each generation, among which three key technologies, i.e., duplex, waveform and multiple access, are the iconic characteristics of mobile communication systems of each generation. In this paper, we systematically review the development history and trend of the three key technologies and define the Non-Orthogonal Physical Layer (NOPHY) concept for 6G, including Non-Orthogonal Duplex (NOD), Non-Orthogonal Multiple Access (NOMA) and Non-Orthogonal Waveform (NOW). Firstly, we analyze the necessity and feasibility of NOPHY from the perspective of capacity gain and implementation complexity. Then we discuss the recent progress of NOD, NOMA and NOW, and highlight several candidate technologies and their potential performance gain. Finally, combined with the new trend of 6G, we put forward a unified physical layer design based on NOPHY that well balances performance against flexibility, and point out the possible direction for the research and development of 6G physical layer key technologies.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2021EBP3192/_p
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@ARTICLE{e105-b_11_1444,
author={Xiaolin HOU, Wenjia LIU, Juan LIU, Xin WANG, Lan CHEN, Yoshihisa KISHIYAMA, Takahiro ASAI, },
journal={IEICE TRANSACTIONS on Communications},
title={Non-Orthogonal Physical Layer (NOPHY) Design towards 5G Evolution and 6G},
year={2022},
volume={E105-B},
number={11},
pages={1444-1457},
abstract={5G has achieved large-scale commercialization across the world and the global 6G research and development is accelerating. To support more new use cases, 6G mobile communication systems should satisfy extreme performance requirements far beyond 5G. The physical layer key technologies are the basis of the evolution of mobile communication systems of each generation, among which three key technologies, i.e., duplex, waveform and multiple access, are the iconic characteristics of mobile communication systems of each generation. In this paper, we systematically review the development history and trend of the three key technologies and define the Non-Orthogonal Physical Layer (NOPHY) concept for 6G, including Non-Orthogonal Duplex (NOD), Non-Orthogonal Multiple Access (NOMA) and Non-Orthogonal Waveform (NOW). Firstly, we analyze the necessity and feasibility of NOPHY from the perspective of capacity gain and implementation complexity. Then we discuss the recent progress of NOD, NOMA and NOW, and highlight several candidate technologies and their potential performance gain. Finally, combined with the new trend of 6G, we put forward a unified physical layer design based on NOPHY that well balances performance against flexibility, and point out the possible direction for the research and development of 6G physical layer key technologies.},
keywords={},
doi={10.1587/transcom.2021EBP3192},
ISSN={1745-1345},
month={November},}
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TY - JOUR
TI - Non-Orthogonal Physical Layer (NOPHY) Design towards 5G Evolution and 6G
T2 - IEICE TRANSACTIONS on Communications
SP - 1444
EP - 1457
AU - Xiaolin HOU
AU - Wenjia LIU
AU - Juan LIU
AU - Xin WANG
AU - Lan CHEN
AU - Yoshihisa KISHIYAMA
AU - Takahiro ASAI
PY - 2022
DO - 10.1587/transcom.2021EBP3192
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E105-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2022
AB - 5G has achieved large-scale commercialization across the world and the global 6G research and development is accelerating. To support more new use cases, 6G mobile communication systems should satisfy extreme performance requirements far beyond 5G. The physical layer key technologies are the basis of the evolution of mobile communication systems of each generation, among which three key technologies, i.e., duplex, waveform and multiple access, are the iconic characteristics of mobile communication systems of each generation. In this paper, we systematically review the development history and trend of the three key technologies and define the Non-Orthogonal Physical Layer (NOPHY) concept for 6G, including Non-Orthogonal Duplex (NOD), Non-Orthogonal Multiple Access (NOMA) and Non-Orthogonal Waveform (NOW). Firstly, we analyze the necessity and feasibility of NOPHY from the perspective of capacity gain and implementation complexity. Then we discuss the recent progress of NOD, NOMA and NOW, and highlight several candidate technologies and their potential performance gain. Finally, combined with the new trend of 6G, we put forward a unified physical layer design based on NOPHY that well balances performance against flexibility, and point out the possible direction for the research and development of 6G physical layer key technologies.
ER -