Sub-THz Channel Sounding Dataset

Dataset Overview

This dataset contains dual-band Sub-THz channel measurements at 154 GHz and 300 GHz, collected by the Radio Signal Processing Laboratory at Niigata University using a Keysight AWG/DGT-based channel sounder. The measurements cover four representative propagation environments: an open square outdoor hotspot, an indoor corridor, an indoor conference room, and an outdoor street canyon.

For each scenario, channel transfer functions (CTFs) are measured by mechanically scanning TX and/or RX horn antennas over the azimuth plane, enabling extraction of multipath components (MPCs) including delay, direction-of-departure (DoD), direction-of-arrival (DoA), and received power.

Measurement Setup

Frequency	154 GHz and 300 GHz (dual-band)
Measurement Type	Directional scan channel measurement
TX/RX Antenna	Horn antenna (26 dBi, 9° HPBW)
Signal Bandwidth	4 GHz (154 GHz) / 8 GHz (300 GHz)
Delay Resolution	250 ps (154 GHz) / 125 ps (300 GHz)
Environments	Indoor (conference room, corridor), Outdoor (street canyon, open square)
Location	Japan
Channel Sounder	Keysight AWG/DGT Channel Sounder

Measurement Scenarios

Conference Room Indoor

154/300 GHz · Meeting room scenario

Corridor Indoor

154/300 GHz · Access, ~~D2D, and backhaul~~ links

Street Canyon Outdoor

154/300 GHz · Urban street canyon access

Open Square Outdoor

300 GHz · Hotspot access scenario

Measurement Method

Channel measurements were performed using a custom-built dual-band Sub-THz channel sounder based on a Keysight AWG/DGT platform, covering 154 GHz (4 GHz BW) and 300 GHz (8 GHz BW) simultaneously. High-gain horn antennas are mechanically rotated in azimuth at both TX and RX sides to obtain double-directional channel data.

Channel Sounder Specifications

Parameter	154 GHz	300 GHz
Carrier Frequency	154 GHz	300 GHz
Signal Bandwidth	4 GHz	8 GHz
Sounding Signal	640 tones	1,280 tones
Delay Resolution	250 ps	125 ps
Delay Span	160 ns
Antenna Gain	26 dBi
HPBW	9°
EIRP	14 dBm
Dynamic Range	60–80 dB

Back-to-Back Calibration

A back-to-back (B2B) calibration is performed by directly connecting the TX and RX chains to measure the combined system frequency response. This response is divided out of all measured CTFs to yield calibrated channel transfer functions free of hardware distortion.

Dual-band Setup

154/300 GHz dual-band channel sounder RF head

TX unit (left) with Up-Conv., BPF, PA, and Horn Ant. for 154/300 GHz. RX unit (right) with Horn Ant. and Down-Conv. Mounted on motorized rotator for azimuth scanning.

System Architecture

Keysight AWG/DGT Sub-THz channel sounder system block diagram

Full system block diagram with hardware photo. TX: AWG (M8195A, 64 GSa/s) with ×12/×6 upconversion to 300/154 GHz. RX: Digitizer (M8131A, 32 GSa/s) with LNA and downconverter. GPS/Rubidium clock for synchronization.

Datasets

Scenario	Environment	Frequency	Link Type	Propagation	Reference	Data Download
Conference Room Indoor	Indoor meeting room	154 GHz300 GHz	Access	LoS / NLoS	AWPL 2026 ResearchGate	Available PL / LSP (.xlsx)
Corridor Indoor	Indoor corridor	154 GHz300 GHz	Access, ~~D2D~~, ~~Backhaul~~	LoS / NLoS	TAP 2025(initial 300 GHz results)ResearchGate	Available PL / LSP (.xlsx)
Street Canyon Outdoor	Outdoor urban street	154 GHz300 GHz	Access	LoS / NLoS	TAP 2026 arXiv	Available PL / LSP (.xlsx)
Open Square Outdoor	Outdoor hotspot access	300 GHz	Access	LoS / NLoS	WCL 2024 ResearchGate	Coming soon

Multi-dimensional CIR-level data and multipath component (MPC) data are available upon consultation. Please contact us for details.

Conference room – floor plan with Tx/Rx positions and antenna setup

Conference Room – 154/300 GHz

Frequency	154 GHz and 300 GHz
Link Type	Access (BS→MS)
Propagation	LoS / NLoS
Reference	IEEE AWPL 2026 ResearchGate
PL / LSP Data	SubTHz_ConferenceRoom_PL_LSP.xlsx

Indoor conference room scenario at both 154 GHz and 300 GHz, characterizing dual-band channel behavior in a typical meeting room.

Corridor environment – photo and sounder setup

Corridor floor plan with Tx/Rx positions

Corridor – 154/300 GHz

Frequency	154 GHz and 300 GHz
Link Types	Access, ~~D2D~~, ~~Backhaul~~
Propagation	LoS / NLoS
Reference	IEEE TAP 2025 ResearchGate
PL / LSP Data	SubTHz_Corridor_PL_LSP.xlsx

Indoor corridor environment at 154 GHz and 300 GHz covering three link types: access (BS-to-UE), ~~device-to-device (D2D), and backhaul (BS-to-BS)~~. The dataset is based on dual-band measurements; the referenced IEEE TAP paper reports initial experimental results at 300 GHz and is provided for reference.

Street canyon measurement setup – aerial map and LoS/NLoS photos

Street Canyon – 154/300 GHz

Frequency	154 GHz and 300 GHz
Link Type	Access (BS→MS)
Propagation	LoS / NLoS
Reference	IEEE TAP 2026 arXiv
PL / LSP Data	SubTHz_StreetCanyon_PL_LSP.xlsx

Outdoor urban street canyon at 154 GHz and 300 GHz for access channel characterization. Quasi-deterministic channel modeling based on measurement data.

Open Square – aerial map with Tx/Rx positions

Open Square – 300 GHz Hotspot

Frequency	300 GHz
Link Type	Access (BS→MS)
Propagation	LoS / NLoS
Reference	IEEE WCL 2024 ResearchGate

Outdoor open square hotspot access scenario at 300 GHz. MIMO channel capacity measurements with mechanically rotated horn antennas.

Related Publications & Citation

If you use this dataset in your research, please cite the relevant papers. Click BibTeX to show the citation entry.

IEICE Trans. Commun. 2027
M. Yomoda, M. Kim, N. Kuno, K. Kitao, S. Suyama, "Characterization and Modeling of Vegetation Blockage Effects on Building Reflection Paths at Sub-THz Frequencies," IEICE Trans. Commun., vol. E110-B, no. 3, Mar. 2027.
DOI Link PDF (Open Access) BibTeX

@article{yomoda2027vegetation,
  author  = {Yomoda, Masato and Kim, Minseok and
             Kuno, Nobuaki and Kitao, Koshiro and
             Suyama, Satoshi},
  title   = {{Characterization and Modeling of
             Vegetation Blockage Effects on Building
             Reflection Paths at Sub-THz Frequencies}},
  journal = {IEICE Transactions on Communications},
  volume  = {E110-B},
  number  = {3},
  year    = {2027},
  doi     = {10.23919/transcom.2026isp0005}
}

IEEE TAP (Early Access)
M. Kim, M. Yomoda, "Synthesized-Isotropic Narrowband Channel Parameter Extraction from Angle-Resolved Wideband Channel Measurements," IEEE Trans. Antennas Propagat., early access.
DOI Link arXiv BibTeX

@article{kim2026synthesized,
  author  = {Kim, Minseok and Yomoda, Masato},
  title   = {{Synthesized-Isotropic Narrowband Channel
             Parameter Extraction from Angle-Resolved
             Wideband Channel Measurements}},
  journal = {IEEE Transactions on Antennas and
             Propagation},
  note    = {Early Access},
  year    = {2026},
  doi     = {10.1109/tap.2026.3741563}
}

IEEE TAP 2026
M. Kim, M. Yomoda, M. Mao, N. Kuno, K. Kitao, S. Suyama, "Quasi-Deterministic Modeling of Sub-THz Band Access Channels in Street Canyon Environments," IEEE Trans. Antennas Propagat., 2026.
DOI Link arXiv BibTeX

@article{kim2026quasi,
  author  = {Kim, Minseok and Yomoda, Masato and
             Mao, Minghe and Kuno, Nobuaki and
             Kitao, Koshiro and Suyama, Satoshi},
  title   = {{Quasi-Deterministic Modeling of Sub-THz
             Band Access Channels in Street Canyon
             Environments}},
  journal = {IEEE Transactions on Antennas and
             Propagation},
  year    = {2026},
  doi     = {10.1109/tap.2026.3680565}
}

IEEE AWPL 2026
M. Mao, M. Kim, "Indoor Sub-THz Channel Characterization at 154 GHz and 300 GHz in a Conference Room Scenario," IEEE Antennas Wireless Propagat. Lett., 2026.
DOI Link ResearchGate BibTeX

@article{mao2026indoor,
  author  = {Mao, Minghe and Kim, Minseok},
  title   = {{Indoor Sub-THz Channel Characterization
             at 154 GHz and 300 GHz in a Conference
             Room Scenario}},
  journal = {IEEE Antennas and Wireless Propagation
             Letters},
  year    = {2026},
  doi     = {10.1109/lawp.2026.3659850}
}

IEEE Commag 2026
M. Kim, J. Takada, M. Mao, C. C. Kang, X. Du, A. Ghosh, "THz Channels for Short-Range Mobile Networks: Multipath Channel Behavior and Human Body Shadowing Effects," IEEE Commun. Mag., 2026.
DOI Link PDF (Open Access) BibTeX

@article{kim2026thz,
  author  = {Kim, Minseok and Takada, Jun-Ichi and
             Mao, Minghe and Kang, Che Chia and
             Du, Xin and Ghosh, Anirban},
  title   = {{THz Channels for Short-Range Mobile
             Networks: Multipath Channel Behavior and
             Human Body Shadowing Effects}},
  journal = {IEEE Communications Magazine},
  year    = {2026},
  doi     = {10.1109/mcom.001.2400694}
}

IEEE TAP 2025
R. Takahashi, A. Ghosh, M. Mao, M. Kim, "Channel Modeling and Characterization of Access, D2D, and Backhaul Links in a Corridor Environment at 300 GHz," IEEE Trans. Antennas Propagat., vol. 73, 2025.
DOI Link ResearchGate BibTeX

@article{takahashi2025channel,
  author  = {Takahashi, Riku and Ghosh, Anirban and
             Mao, Minghe and Kim, Minseok},
  title   = {{Channel Modeling and Characterization
             of Access, D2D, and Backhaul Links in a
             Corridor Environment at 300 GHz}},
  journal = {IEEE Transactions on Antennas and
             Propagation},
  year    = {2025},
  doi     = {10.1109/tap.2024.3450308}
}

IEEE WCL 2024
M. Mao, R. Takahashi, A. Ghosh, M. Kim, "MIMO Channel Capacity Measurement in Open Square Hotspot Access Scenarios at 300 GHz," IEEE Wireless Commun. Lett., 2024.
DOI Link ResearchGate BibTeX

@article{mao2024mimo,
  author  = {Mao, Minghe and Takahashi, Riku and
             Ghosh, Anirban and Kim, Minseok},
  title   = {{MIMO Channel Capacity Measurement in
             Open Square Hotspot Access Scenarios
             at 300 GHz}},
  journal = {IEEE Wireless Communications Letters},
  year    = {2024},
  doi     = {10.1109/lwc.2024.3430494}
}

IEEE Access 2023
M. Kim, A. Ghosh, R. Takahashi, K. Shibata, "Indoor Channel Measurement at 300 GHz and Comparison of Signal Propagation with 60 GHz," IEEE Access, vol. 11, pp. 124040–124054, Nov. 2023.
DOI Link PDF (Open Access) BibTeX

@article{kim2023indoor,
  author  = {Kim, Minseok and Ghosh, Anirban and
             Takahashi, Riku and Shibata, Kosuke},
  title   = {{Indoor Channel Measurement at 300 GHz
             and Comparison of Signal Propagation
             with 60 GHz}},
  journal = {IEEE Access},
  volume  = {11},
  pages   = {124040--124054},
  year    = {2023},
  doi     = {10.1109/access.2023.3330653}
}

IEEE TTHz 2023
A. Ghosh, R. Takahashi, M. Kim, "Comparison of Clustering Techniques using an Indoor Measurement at 300 GHz," IEEE Trans. Terahertz Sci. Technol., vol. 13, no. 6, pp. 678–687, Sept. 2023.
DOI Link ResearchGate BibTeX

@article{ghosh2023comparison,
  author  = {Ghosh, Anirban and Takahashi, Riku and
             Kim, Minseok},
  title   = {{Comparison of Clustering Techniques
             using an Indoor Measurement at 300 GHz}},
  journal = {IEEE Transactions on Terahertz Science
             and Technology},
  volume  = {13},
  number  = {6},
  pages   = {678--687},
  year    = {2023},
  doi     = {10.1109/tthz.2023.3313462}
}

IEICE ComEX 2023
R. Takahashi, K. Shibata, A. Ghosh, M. Kim, "Validation of 300 GHz Channel Sounder through Indoor Multipath Measurements," IEICE Commun. Express, vol. 12, no. 6, pp. 271–276, Jun. 2023.
DOI Link PDF (J-STAGE) BibTeX

@article{takahashi2023validation,
  author  = {Takahashi, Riku and Shibata, Kosuke and
             Ghosh, Anirban and Kim, Minseok},
  title   = {{Validation of 300 GHz Channel Sounder
             through Indoor Multipath Measurements}},
  journal = {IEICE Communications Express},
  volume  = {12},
  number  = {6},
  pages   = {271--276},
  year    = {2023},
  doi     = {10.1587/comex.2023spl0013}
}

IEEE Access 2023
A. Ghosh, M. Kim, "THz Channel Sounding and Modeling Techniques: An Overview," IEEE Access, vol. 11, pp. 17823–17856, Feb. 2023.
DOI Link PDF (Open Access) BibTeX

@article{ghosh2023thz,
  author  = {Ghosh, Anirban and Kim, Minseok},
  title   = {{THz Channel Sounding and Modeling
             Techniques: An Overview}},
  journal = {IEEE Access},
  volume  = {11},
  pages   = {17823--17856},
  year    = {2023},
  doi     = {10.1109/access.2023.3246161}
}