Volume 31 Issue 3
May  2022
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GUO Rongbin, TANG Yajie, ZHANG Changming, et al., “Prospects and Challenges of THz Precoding,” Chinese Journal of Electronics, vol. 31, no. 3, pp. 488-498, 2022, doi: 10.1049/cje.2021.00.263
Citation: GUO Rongbin, TANG Yajie, ZHANG Changming, et al., “Prospects and Challenges of THz Precoding,” Chinese Journal of Electronics, vol. 31, no. 3, pp. 488-498, 2022, doi: 10.1049/cje.2021.00.263

Prospects and Challenges of THz Precoding

doi: 10.1049/cje.2021.00.263
Funds:  This work was supported in part by the National Key Research and Development Program of China (2021YFB2800800, 2020YFB1805700, 2018YFB1801500, 2018YFB2201700), Zhejiang Lab ( 2020LC0AA02, 2021LC0PI01, 2020LC0AD01), the National Natural Science Foundation of China (61771424), the Natural Science Foundation of Zhejiang Province (LQ21F010002, LZ18F010001), and the Key Research and Development Program of Zhejiang Province (2021C04006)
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  • Author Bio:

    (corresponding author) received the B.S. degree in communication engineering from Southwest Jiaotong University, Chengdu, China, in 2013, and the Ph.D degree in communication and information systems from Zhejiang University, Hangzhou, China, in 2018. He is currently an Assistant Professor with the Intelligent Network Institute, Zhejiang Lab, Hangzhou, China. His research interests include terahertz communications, algorithm design for MIMO communication systems, and signal processing for wireless communications. (Email:rbguoisee@zju.edu.cn)

    received the B.S. degree from Beihang University, Beijing, China, in 2017, and the M.S. degree from the Delft University of Technology, Delft, the Netherlands, in 2020. She is currently working at the Intelligent Network Institute of Zhejiang Lab, Hangzhou, China. Her research interests include signal processing and algorithm design for communications

    received the B.S. degree from the Department of Electronic Information Science and Technology, Beijing Normal University, Beijing, China, in 2010, and the Ph.D. degree from the Department of Electronic Engineering, Tsinghua University, Beijing, in 2015. He is currently a research expert with the Intelligent Network Institute, Zhejiang Lab, Hangzhou, China. His research interests include millimeter wave and terahertz wireless communications, including hardware impairments compensation, spectral efficiency enhancement, and signal quality optimization

    received the B.S., M.S., and Ph.D. degrees from the Department of Electronic Engineering, Tsinghua University, Beijing, China, in 2014, 2016 and 2020, respectively. He is currently an Assistant Professor with Research Center for Intelligent Computing Platform, Zhejiang Lab, Hangzhou, China. His current research interests include terahertz communications, integrated terrestrial-satellite communications, and information theory

    is the Chief Engineer of Zhejiang Lab. He received the Ph.D. degree in communication and information system from the PLA University of Science and Technology, Nanjing, China. He serves as a Member of the National “Broadband China Strategy”drafting expert group, a Member of the National Next Generation Radio and Television Network expert group, a Member of the State Radio and Television Administration’s Three Network Integration expert group, and the Chief Scientist of Zhejiang “Software Defined Network Technology and Application Innovation Team”. He is also the Vice President of IEEE VTS Society Nanjing Chapter. His research interests include broadband wireless networks, software-defined networks, swarm intelligence, mobile edge computing, and next-generation broadcast television networks. He has published more than 100 papers in journals, and applied for more than 30 patents

  • Received Date: 2021-07-30
  • Accepted Date: 2022-01-25
  • Available Online: 2022-02-19
  • Publish Date: 2022-05-05
  • Terahertz (THz) communications are considered as very promising for the sixth-generation (6G) ultra-dense wireless networks. However, THz signals suffer from well-known severe path loss, which consequently shortens the coverage of THz communication systems. To deal with this issue, precoding technique is expected to be beneficial to extend the limited coverage by providing directional beams with ultra large number of antenna arrays. In this paper, we overview the state-of-the-art developments of THz precoding techniques such as reconfigurable intelligent surface based precoding, hybrid digital-analog precoding and delay-phase precoding. Based on the survey, we summarize several open issues remaining to be addressed, and discuss the prospects of a few potential research directions on THz precoding, such as one-bit precoding, precoding for hardware impairments and THz security precoding. This overview will be helpful for researchers to study innovative solutions of THz precoding in the future 6G wireless communications.
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