300-GHz-Band Self-Heterodyne Wireless System for Real-Time Video Transmission Toward 6G

Morishita, Yohei; Teraoka, Toshihiro; Kashino, Yuichi; Asano, Hiroyuki; Sakamoto, Takenori; Shirakata, Naganori; Takinami, Koji; Takahashi, Koichi

doi:10.1109/rfit49453.2020.9226182

Cited by 9 publications

(3 citation statements)

References 6 publications

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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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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

View full text Add to dashboard Cite

show abstract

“…The terminal utilizes the peripheral devices as virtual millimeter-wave antennae, and then the spatial multiplexing capability is enhanced without increasing the size or power consumption of the terminal itself. Several papers have reported an evaluation [2] and demonstrations [3,4] of a communication using the orthogonal frequency division multiplexing (OFDM) around 300 GHz band, but none of them considered the conversion to the millimeter radio wave or the effect of the multipath fading over the channel. In the system with the virtualized terminal, the peripheral devices perform only up/down-conversion and amplification without baseband processing.…”

Section: Introductionmentioning

confidence: 99%

Effect of terahertz-wave phase noise and millimeter-wave multipath fading on Beyond 5G wireless system

2022

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Towards the Beyond 5G ultra-high-speed wireless system, the "virtualized terminal" system is studied. By connecting a user terminal to multiple peripheral devices over terahertz radio wave (300 GHz) which are utilized as virtual antennae communicating with access points using millimeter radio wave, the spatial multiplexing capability is enhanced. In this system, the waveform is required to be robust against both phase noise from a terahertz-wave oscillator and multipath fading over the millimeterwave since the baseband waveform is common to those frequencies. This work evaluates the effect of those factors and reveals that the effect of phase noise and multipath fading is dominant for OFDM and DFT-s-OFDM, respectively.

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“…This market will continue to drive the increase of the utilized frequency spectrum as well as the required bandwidth [2]- [4]. Common and well-established approaches for microwave and mm-wave systems are mostly based on active circuitry today, like heterodyne or homodyne architectures [5]- [6]. The benefits of using active microwave systems are good sensitivity and dynamic range combined with good miniaturization capabilities.…”

Section: Introductionmentioning

confidence: 99%

MMIC Vector Topology Enabling Multi RF Functionalities for 5G and Beyond

2021

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This paper presents a vector topology of a monolithic microwave integrated circuit (MMIC) capable of performing several radiofrequency (RF) functionalities essential for future wireless communications and geolocation in the millimeter frequency band. The proposed circuit can address several usage modes such as conventional frequency heterodyning for high-speed IQ modulation and demodulation. In addition, the device can be configured in six-port quadratic detection mode to achieve optimum power added efficiency (PAE). The topology developed in 65 nm FDSOI CMOS technology achieves broadband V-band frequency operation and combines vector precision for both high data rates and phase state determination. The results presented concern QPSK modulation schemes at data rates up to 4 Gbps as well as essential geolocation metrics such as time domain of arrival (TDoA) and angle of arrival (AoA). The combination of vector accuracy / PAE together with wide linear operating range makes this topology a viable candidate for next generation radio frequency systems. INDEX TERMSMonolithic microwave integrated circuit (MMIC), IQ modulation / demodulation, Millimeter wave, Six-port technology, Time domain of arrival (TDoA), Angle of arrival (AoA).

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300-GHz-Band Self-Heterodyne Wireless System for Real-Time Video Transmission Toward 6G

Cited by 9 publications

References 6 publications

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

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

Effect of terahertz-wave phase noise and millimeter-wave multipath fading on Beyond 5G wireless system

MMIC Vector Topology Enabling Multi RF Functionalities for 5G and Beyond

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