首页|Prospects and Challenges of THz Precoding

Prospects and Challenges of THz Precoding

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Terahertz(THz)communications are considered as very promising for the sixth-generation(6G)ultra-dense wireless networks.However,THz sig-nals suffer from well-known severe path loss,which con-sequently 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 remain-ing 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 help-ful for researchers to study innovative solutions of THz precoding in the future 6G wireless communications.

THz precodingReconfigurable intelli-gent surfaceHybrid precodingBeam spilt

GUO Rongbin、TANG Yajie、ZHANG Changming、LIU Shanyun、ZHAO Zhifeng

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Zhejiang Laboratory,Hangzhou 311100,China

National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaZhejiang LabZhejiang LabZhejiang Lab国家自然科学基金浙江省自然科学基金浙江省自然科学基金Key Research and Development Program of Zhejiang Province

2021YFB28008002020YFB18057002018YFB18015002018YFB22017002O20LCOAAO 22021LC0PI012020LC0AD0161771424LQ21F010002LZ18F0100012021C04006

2022

10.1049/cje.2021.00.263

电子学报(英文)

电子学报(英文)

CSTPCDSCIEI
ISSN：1022-4653
年,卷(期)：2022.31(3)
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