300-GHz-Band OFDM Video Transmission with CMOS TX/RX Modules and 40dBi Cassegrain Antenna toward 6G

Yohei MORISHITA  Sangyeop LEE  Toshihiro TERAOKA  Ruibing DONG  Yuichi KASHINO  Hitoshi ASANO  Shinsuke HARA  Kyoya TAKANO  Kosuke KATAYAMA  Takenori SAKAMOTO  Naganori SHIRAKATA  Koji TAKINAMI  Kazuaki TAKAHASHI  Akifumi KASAMATSU  Takeshi YOSHIDA  Shuhei AMAKAWA  Minoru FUJISHIMA  

IEICE TRANSACTIONS on Electronics   Vol.E104-C    No.10    pp.576-586
Publication Date: 2021/10/01
Publicized: 2021/01/26
Online ISSN: 1745-1353
DOI: 10.1587/transele.2021MMP0005
Type of Manuscript: Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
6G,  THz,  300GHz,  Cassegrain antenna,  OFDM,  CMOS,  transmitter,  receiver,  module,  

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This paper demonstrates 300GHz terahertz wireless communication using CMOS transmitter (TX) and receiver (RX) modules targeting sixth-generation (6G). To extend communication distance, CMOS modules with WR-3.4 waveguide interface and a high-gain antenna of 40dBi Cassegrain antenna are designed, achieving 36Gbps throughput at a 1m communication distance. Besides, in order to support orthogonal frequency-division multiplexing (OFDM), a self-heterodyne architecture is introduced, which effectively cancels the phase noise in multi-carrier modulation. As a proof-of-concept (PoC), the paper successfully demonstrates real-time video transfer at a 10m communication distance using fifth-generation (5G) based OFDM at the 300GHz frequency band.