A High-order Modulation (64-QAM) Broadband THz Communication System over 100 Gbps

Lai, Zhengrong; Li, Chao; Li, Yongjun; Lai, Xinyan; Li, Jianqiang; Guan, Ke

doi:10.1109/iceict53123.2021.9531263

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…7) Terahertz wireless transmission has been the focus of much research in recent years. [8][9][10][11][12][13][14][15][16] In particular, the 300 GHz band has the potential to provide a wide bandwidth in the near future. However, the HF of terahertz waves causes high propagation loss in the atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Terahertz wave beam control using optical phased array and array photomixer

Doi,

Li,

Che

et al. 2024

Jpn. J. Appl. Phys.

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Terahertz waves technology is attracted attention as a means of achieving ultrahigh-speed, high-capacity wireless communications. However, terahertz waves have high propagation loss due to their high frequency and high directivity. Therefore, terahertz waves intensity enhancement and beam steering are required. In this study, we discussed beam control of the terahertz wave generated by arrayed photomixers using an optical phased array (OPA). It was revealed that the terahertz beam steering by the OPA can be controlled with an error of less than 10°. Furthermore, we developed an automatic terahertz beam deflection system based on a hill-climbing algorithm and feedback control to improve the beam steering accuracy.

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Section: Introductionmentioning

confidence: 99%

Terahertz wave beam control using optical phased array and array photomixer

Doi,

Li,

Che

et al. 2024

Jpn. J. Appl. Phys.

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“…Thanks to recent improvements in device performance, transmission performance can be verified using actual transceivers and receivers for sub-THz bands. Transmission rates exceeding 100 Gbps can be achieved using a wideband spectrum through wireless communications [21,22,23,24,25,26,27,28,29,30]. Moreover, these advancements bring to light feasible configurations for wideband transmission with long distances for future mobile communications.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on a sub-terahertz single-carrier transmission exceeding 100Gbps using an ultra-wideband transmission system

Fukuda,

Yamamoto,

Matsudaira

et al. 2024

IEICE Electron. Express

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This letter reports on experimental results of high data rate transmissions using a sub-terahertz single-carrier (SC) transmission scheme. One requirement for 6G is achieving a data rate exceeding 100 Gbps. According to Shannon's channel capacity, the data rate is proportional to the transmission-signal bandwidth. Therefore, one approach for achieving the target data rate is to employ a sub-terahertz transmission with an ultrawide bandwidth of over several gigahertz. To verify the feasibility of high data-rate transmission using an ultra-wide bandwidth, a SC transmission system with a carrier frequency of 141.5 GHz is configured and tested in an outdoor line-of-sight environment. The configured system transmits two different wideband signals using orthogonal polarization-division multiplexing. Experimental results show that a single vertical or horizontal polarized transmission with a baud rate of 10 GHz is available for the data rate of 60 Gbps at the long transmission distance of 100 m. Furthermore, the total data rate of 117 Gbps is achieved by multiplexing two orthogonally polarized transmissions.

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