mm-Wave Channel Sounding Dataset – Radio Signal Processing Lab, Niigata University

Dataset Overview

This dataset was collected by the Radio Signal Processing Laboratory at Niigata University as part of dual-band channel measurement campaigns in urban macro-cell (UMa) and micro-cell (UMi) environments in Yokohama City, Japan. Three areas were covered: Yuraku, NTTCom, and World Porters (WP) — the same urban access environments used for the Sub-6GHz MIMO Channel Sounding campaign.

Double-directional channel measurements were conducted simultaneously at 24 GHz and 60 GHz using a custom-built mm-wave channel sounder, capturing the angular and delay characteristics of the propagation channel in both LoS and NLoS conditions.

Measurement Setup

Frequency	24 GHz and 60 GHz (simultaneous)
Measurement Type	Double-directional channel measurement
TX/RX Antenna	COTS Phased Arrays
TX Height	31.0 m (Yuraku) · 34.0 m (NTTCom) · 3.0 m (WP)
RX Height	1.5 m (all areas)
Meas. Points	126 total (Yuraku: 49 · NTTCom: 52 · WP: 25)
Environments	Urban macro-cell (UMa), Urban micro-cell (UMi)
Location	Yokohama City, Japan
Channel Sounder	MIMO Channel Sounder

Measurement Areas

Area 1 – Yuraku (UMa)

Yokohama Daiichi Yuraku Bldg.

Urban Macro 24 GHz 60 GHz

Area 2 – NTTCom (UMa)

NTTCom Yokohama Yamashita Bldg.

Urban Macro 24 GHz 60 GHz

Area 3 – WP / World Porters (UMi)

Yokohama World Porters

Urban Micro 24 GHz 60 GHz

All Areas ●Yuraku ●NTTCom ●WP

Tx Yuraku NTTCom WP · Download KML

Measurement Method

Channel measurements were conducted using a custom-built 24/60-GHz dual-band double-directional (D-D) channel sounder based on commercial off-the-shelf (COTS) phased array RF transceivers (SIVERS IMA). The system acquires double-directional channel data over the full 360° azimuth range at both frequencies simultaneously.

Channel Sounder System

	24 GHz	60 GHz
RF Transceiver	EVK02001 (SIVERS IMA)	EVK06002 (SIVERS IMA)
Antenna	8×2-element UPA	16-element ULA
Beam Coverage / Array	±45° (90° per orientation)
Tx Beams / Orientation	5	11
Rx Beams / Orientation	5	12
MIMO Scheme	Dual 4×4 TDM

Full Azimuth (360°) Sweep

Each phased array covers a 90° sector. By rotating both TX and RX arrays through four cardinal orientations (N, E, S, W), a full 360° double-directional angular sweep is achieved. One complete measurement cycle takes approximately 5 minutes per RX point.

OTA Calibration

Over-the-air (OTA) calibration is applied to remove the combined frequency response of the TX and RX chains, including phased array antenna characteristics, yielding calibrated channel transfer functions (CTFs).

Post-Processing

Multipath components (MPCs) — delay, angle-of-departure (AoD), angle-of-arrival (AoA), and power — are extracted from the multi-dimensional channel impulse response (MDCIR) using a multi-dimensional sub-grid CLEAN algorithm. MPC clustering is then performed with a K-PowerMeans (KPM) algorithm applied jointly to the 24 GHz and 60 GHz datasets, yielding common clusters (present at both frequencies) and uncommon clusters (present at one frequency only).

Dual-band joint clustering: 24 GHz and 60 GHz MPC datasets are composed and clustered jointly.

Channel Sounder Hardware

24/60-GHz dual-band channel sounder system

TX (left) and RX (right) units mounted on carts. Each cart carries a 24-GHz and 60-GHz phased array with a 360° camera on top.

Field Measurement

RX cart positioned at a static measurement point in the urban street environment (Yokohama, Japan).

Datasets

Scenario	Area / BS Location	TX Height	RX Height	Direction	Points	Frequency	Data Download
Urban Macro UMa	Kanai Area Yokohama Daiichi Yuraku Bldg.	31.0 m	1.5 m	NW (19) / SW (30)	49	24 GHz60 GHz	Coming soon
Urban Macro UMa	China Town NTTCom Yokohama Yamashita Bldg.	34.0 m	1.5 m	E (29) / S (23)	52	24 GHz60 GHz	Coming soon
Urban Micro UMi	Streets Yokohama World Porters	3.0 m	1.5 m	NW (25)	25	24 GHz60 GHz	Coming soon

BS Antenna

MS Antenna

Area 1 – Yuraku UMa

Location	Kanai Area, Yokohama
BS Building	Yokohama Daiichi Yuraku Bldg.
TX Height	31.0 m
RX Height	1.5 m
BS Direction	NW / SW
Meas. Points	NW: 19 / SW: 30 (Total: 49)
Frequency	24 GHz, 60 GHz

BS Antenna

MS Antenna

Area 2 – NTTCom UMa

Location	China Town, Yokohama
BS Building	NTTCom Yokohama Yamashita Bldg.
TX Height	34.0 m
RX Height	1.5 m
BS Direction	E / S
Meas. Points	E: 29 / S: 23 (Total: 52)
Frequency	24 GHz, 60 GHz

BS Antenna

MS Antenna

Area 3 – World Porters UMi

Location	Yokohama World Porters
TX Placement	Near intersection (street-level)
TX Height	3.0 m
RX Height	1.5 m
BS Direction	NW
Meas. Points	NW: 25 (Total: 25)
Frequency	24 GHz, 60 GHz

Data Preview

Sample visualizations from the measurement campaigns.

Area 1 – Yuraku (Urban Macro) Area 2 – NTTCom (Urban Macro) Area 3 – WP (Urban Micro) Measurement area overview

Cumulative Distribution Functions (CDF) of Large-Scale Parameters at 24 GHz and 60 GHz.

3GPP TR 38.901 model

Area 1 – Yuraku (Urban Macro) · 24 GHz & 60 GHz · LoS / NLoS

Area 2 – NTTCom (Urban Macro) · 24 GHz & 60 GHz · LoS / NLoS

Area 3 – World Porters (Urban Micro) · 24 GHz & 60 GHz · LoS / NLoS

Measured channel statistics at 24 GHz and 60 GHz. μ and σ denote mean and std. dev. of log₁₀ values. 3GPP reference values from TR 38.901.

Large-Scale Parameters (LSP) — Area 1 Yuraku (UMa)

3GPP reference from TR 38.901 (UMa, 24 GHz).

Parameter		24 GHz		60 GHz		3GPP UMa
Parameter		LoS	NLoS	LoS	NLoS	LoS	NLoS
RMS DS log₁₀(DS/1s)	μ	−6.969	−6.914	−7.454	−7.642	−7.088	−6.562
RMS DS log₁₀(DS/1s)	σ	0.309	0.739	0.485	0.390	0.66	—
RMS ASD log₁₀(ASD/1°)	μ	1.460	1.400	1.267	1.131	1.214	1.342
RMS ASD log₁₀(ASD/1°)	σ	0.118	0.316	0.168	—	0.28	0.28
RMS ASA log₁₀(ASA/1°)	μ	1.615	1.298	1.476	1.707	1.810	1.603
RMS ASA log₁₀(ASA/1°)	σ	0.175	—	0.223	0.363	0.20	0.11
K-factor (dB)	μ	5.17	—	8.36	—	9.00	—
K-factor (dB)	σ	4.63	—	4.60	—	3.50	—

Small-Scale Parameters (SSP) — Area 1 Yuraku

Parameter	24 GHz	60 GHz	3GPP @ 24 GHz	3GPP @ 60 GHz
Cluster DS (ns)	1.868	1.026	1.85	0.54
Cluster ASD (°)	10.759	5.806	5.0	5.458
Cluster ASA (°)	18.255	9.130	11.0	10.338

Large-Scale Parameters (LSP) — Area 2 NTTCom (UMa)

3GPP reference from TR 38.901 (UMa, 24 GHz).

Parameter		24 GHz		60 GHz		3GPP UMa
Parameter		LoS	NLoS	LoS	NLoS	LoS	NLoS
RMS DS log₁₀(DS/1s)	μ	−7.409	−7.151	−7.621	−7.387	−7.088	−6.562
RMS DS log₁₀(DS/1s)	σ	0.142	0.127	0.223	—	0.66	—
RMS ASD log₁₀(ASD/1°)	μ	1.293	1.284	1.193	1.158	1.214	1.342
RMS ASD log₁₀(ASD/1°)	σ	0.064	0.037	0.081	—	0.28	0.28
RMS ASA log₁₀(ASA/1°)	μ	1.598	1.514	1.476	1.707	1.810	1.603
RMS ASA log₁₀(ASA/1°)	σ	0.180	0.097	0.210	—	0.20	0.11
K-factor (dB)	μ	7.462	—	8.244	—	9.00	—
K-factor (dB)	σ	4.584	—	5.130	—	3.50	—

Small-Scale Parameters (SSP) — Area 2 NTTCom

Parameter	24 GHz	60 GHz	3GPP @ 24 GHz	3GPP @ 60 GHz
Cluster DS (ns)	3.226	2.518	1.85	0.54
Cluster ASD (°)	15.334	8.506	5.0	6.723
Cluster ASA (°)	29.404	19.417	11.0	15.723

Large-Scale Parameters (LSP) — Area 3 World Porters (UMi)

3GPP reference from TR 38.901 (UMi, 24 GHz).

Parameter		24 GHz		60 GHz		3GPP UMi
Parameter		LoS	NLoS	LoS	NLoS	LoS	NLoS
RMS DS log₁₀(DS/1s)	μ	−7.184	—	−7.383	—	−7.476	−7.166
RMS DS log₁₀(DS/1s)	σ	0.157	—	0.200	—	0.38	0.564
RMS ASD log₁₀(ASD/1°)	μ	1.529	1.208	1.488	1.122	1.140	—
RMS ASD log₁₀(ASD/1°)	σ	0.089	—	0.074	—	0.41	—
RMS ASA log₁₀(ASA/1°)	μ	1.461	1.698	1.372	1.668	1.618	—
RMS ASA log₁₀(ASA/1°)	σ	0.120	0.370	0.132	0.389	0.300	—
K-factor (dB)	μ	9.45	—	10.16	—	9.00	—
K-factor (dB)	σ	3.38	—	4.37	—	5.00	—

Small-Scale Parameters (SSP) — Area 3 WP

Parameter	24 GHz		60 GHz		3GPP UMi
Parameter	LoS	NLoS	LoS	NLoS	LoS	NLoS
Cluster DS (ns)	2.57	5.00	2.26	11.00	—	—
Cluster ASD (°)	25.01	3.00	19.76	10.00	—	—
Cluster ASA (°)	26.71	17.00	22.27	22.00	—	—

Related Publications & Citation

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

IEEE TVT 2025
H. Tsukada, N. Suzuki, B. Bag, R. Takahashi, M. Kim, "Millimeter-Wave Urban Cellular Channel Characterization and Recipe for High-Precision Site-Specific Channel Simulation," IEEE Trans. Veh. Technol., vol. 74, no. 3, pp. 3598–3612, Mar. 2025.
DOI Link PDF (Open Access) BibTeX

@article{tsukada2025millimeter,
  author  = {Tsukada, Hibiki and Suzuki, Naoya and
             Bag, Banibrata and Takahashi, Riku and
             Kim, Minseok},
  title   = {{Millimeter-Wave Urban Cellular Channel
             Characterization and Recipe for
             High-Precision Site-Specific Channel
             Simulation}},
  journal = {IEEE Transactions on Vehicular Technology},
  volume  = {74},
  number  = {3},
  pages   = {3598--3612},
  year    = {2025},
  doi     = {10.1109/TVT.2024.3492719}
}

IEEE AP-S 2025
M. Kim, "24/60 GHz Dual-Band Synchronized Directional Channel Measurements Using COTS Phased Arrays in Urban Cellular Environments," Proc. IEEE AP-S/CNC-USNC-URSI, 2025.
DOI Link BibTeX

@inproceedings{kim2025aps,
  author    = {Kim, Minseok},
  title     = {{24/60 GHz Dual-Band Synchronized Directional
               Channel Measurements Using COTS Phased Arrays
               in Urban Cellular Environments}},
  booktitle = {Proc. IEEE AP-S/CNC-USNC-URSI},
  year      = {2025},
  doi       = {10.1109/AP-S/CNC-USNC-URSI55537.2025.11266374}
}

IEEE LAWP 2024
N. Suzuki, H. Tsukada, R. Takahashi, B. Bag, M. Kim, "Characterization of Spatial Consistency of Cluster Channels in Urban Environments at 24 and 60 GHz," IEEE Antennas Wireless Propag. Lett., vol. 23, no. 5, pp. 1583–1587, 2024.
DOI Link ResearchGate BibTeX

@article{suzuki2024spatial,
  author  = {Suzuki, Naoya and Tsukada, Hibiki and
             Takahashi, Riku and Bag, Banibrata and
             Kim, Minseok},
  title   = {{Characterization of Spatial Consistency
             of Cluster Channels in Urban Environments
             at 24 and 60 GHz}},
  journal = {IEEE Antennas Wireless Propag. Lett.},
  volume  = {23},
  number  = {5},
  pages   = {1583--1587},
  year    = {2024},
  doi     = {10.1109/LAWP.2024.3363191}
}

ISAP 2022
H. Tsukada, N. Suzuki, R. Takahashi, M. Kim, "24/60-GHz Dual-Band Double-Directional Channel Measurements in Urban Cellular Access Environments," Proc. ISAP 2022, Oct.–Nov. 2022.
DOI Link BibTeX

@inproceedings{tsukada2022dual,
  author    = {Tsukada, Hibiki and Suzuki, Naoya and
               Takahashi, Riku and Kim, Minseok},
  title     = {{24/60-GHz Dual-Band Double-Directional
               Channel Measurements in Urban Cellular
               Access Environments}},
  booktitle = {Proc. Int. Symp. Antennas Propag. (ISAP)},
  year      = {2022},
  month     = {Oct.--Nov.},
  doi       = {10.1109/ISAP53582.2022.9998592}
}

ICC Workshops 2022
M. Kim, H. Tsukada, K. Kumakura, R. Takahashi, N. Suzuki, H. Sawada, T. Matsumura, "A 24/60-GHz Dual-Band Double-Directional Channel Sounder Using COTS Phased Arrays," Proc. IEEE ICC Workshops, 2022.
DOI Link BibTeX

@inproceedings{kim2022icc,
  author    = {Kim, Minseok and Tsukada, Hibiki and
               Kumakura, Keiichiro and Takahashi, Riku and
               Suzuki, Naoya and Sawada, Hirokazu and
               Matsumura, Takeshi},
  title     = {{A 24/60-GHz Dual-Band Double-Directional
               Channel Sounder Using COTS Phased Arrays}},
  booktitle = {Proc. IEEE ICC Workshops},
  year      = {2022},
  doi       = {10.1109/ICCWorkshops53468.2022.9814563}
}

mm-Wave Dual-Band Channel Sounding Dataset

Dataset Overview

Measurement Setup

Measurement Areas

Area 1 – Yuraku (UMa)

Area 2 – NTTCom (UMa)

Area 3 – WP / World Porters (UMi)

Measurement Method

Channel Sounder System

Full Azimuth (360°) Sweep

OTA Calibration

Post-Processing

Channel Sounder Hardware

Field Measurement

Datasets

Area 1 – Yuraku UMa

Area 2 – NTTCom UMa

Area 3 – World Porters UMi

Data Preview

Large-Scale Parameters (LSP) — Area 1 Yuraku (UMa)

Small-Scale Parameters (SSP) — Area 1 Yuraku

Large-Scale Parameters (LSP) — Area 2 NTTCom (UMa)

Small-Scale Parameters (SSP) — Area 2 NTTCom

Large-Scale Parameters (LSP) — Area 3 World Porters (UMi)

Small-Scale Parameters (SSP) — Area 3 WP

Related Publications & Citation

License & Terms of Use

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