Double-directional 8×8 MIMO channel measurements in urban outdoor environments at 4.850 GHz, collected in Yokohama City, Japan. Supports 5G/6G channel modeling, beamforming research, and propagation analysis.
This dataset was collected by the Radio Signal Processing Laboratory at Niigata University as part of drive measurement campaigns in urban macro-cell (UMa) and micro-cell (UMi) environments in Yokohama City, Japan. Four routes (R3, R4, R5, R6) were driven across three distinct areas: Yuraku, NTTCom, and World Porters (WP).
Each drive covers 3,000 measurement points (sample period: 0.512 s) with co-located 360° panoramic photos (every 10 s, ~150 pcs per route). Valid samples are selected based on vehicle motion, TX field-of-view, and power threshold criteria.
| Frequency | 4.850 GHz |
|---|---|
| TX Antenna | 8-Element Uniform Linear Array (ULA) |
| RX Antenna | 8-Element Uniform Circular Array (UCA) |
| Sample Period | 0.512 s · 3,000 pts / route |
| Panorama Photos | Every 10 s · ~150 pcs / route |
| Environments | Urban macro-cell (UMa), Urban micro-cell (UMi) |
| Location | Yokohama City, Japan |
| Channel Sounder | MIMO Channel Sounder |
| Scenario | Area / BS Location | BS Antenna | BS Height | Direction | Routes |
|---|---|---|---|---|---|
| Urban Macro UMa |
Kanai Area Yokohama Daiichi Yuraku Bldg. |
8-elem ULA | 33 m | N | R3 |
| China Town NTTCom Yokohama Yamashita Bldg. |
8-elem ULA | 34 m | SE | R4R5 | |
| Urban Micro UMi |
Streets Yokohama World Porters |
8-elem UCA | 3 m | — | R6 |
| Location | Kanai Area, Yokohama |
|---|---|
| BS Building | Yokohama Daiichi Yuraku Bldg. |
| BS Antenna | 8-elem ULA |
| BS Height | 33 m |
| BS Direction | North (N) |
| Routes | R3 |
| Valid Samples | 915 (R3, 4.85 GHz) |
| Location | China Town, Yokohama |
|---|---|
| BS Building | NTTCom Yokohama Yamashita Bldg. |
| BS Antenna | 8-elem ULA |
| BS Height | 34 m |
| BS Direction | South-East (SE) |
| Routes | R4, R5 |
| Valid Samples | 634 (R4) + 102 (R5) |
| Location | Yokohama World Porters |
|---|---|
| BS Placement | Street-level |
| BS Antenna | 8-elem UCA |
| BS Height | 3 m |
| Routes | R6 |
| Valid Samples | 1,735 (R6, 4.85 GHz) |
Sample visualizations of the measurement campaigns.
Large Scale Parameters (PL, DS, ASA, ASD) at 4.850 GHz for each measurement route.
R3 – Yuraku (Urban Macro, Area 1) · 915 valid samples
R4 – NTTCom (Urban Macro, Area 2) · 634 valid samples
R6 – WP / World Porters (Urban Micro, Area 3) · 1,735 valid samples
| Route | Area | Env. | Valid | Photos |
|---|---|---|---|---|
| R3 | Yuraku | UMa | 915 | 41 |
| R4 | NTTCom | UMa | 634 | 25 |
| R5 | NTTCom | UMa | 102 | 6 |
| R6 | WP | UMi | 1,735 | 15 |
| Total | 3,386 | 87 | ||
Full 360° panoramic images for all measurement locations are included in the dataset download.
| File Name | Contents | Format | Size | |
|---|---|---|---|---|
R1_Yuraku_2.4GHz.zip |
Campaign R1 channel transfer functions | .mat | — MB | Requires registration |
R3_Yuraku_4.8GHz.zip |
Campaign R3 channel transfer functions | .mat | — MB | Requires registration |
R6_WP_4.8GHz.zip |
Campaign R6 channel transfer functions | .mat | — MB | Requires registration |
README.txt |
Data structure, field descriptions, MATLAB usage guide | .txt | — KB | Requires registration |
This dataset is freely available for academic and research purposes. Please complete the registration form below. The download link will be provided immediately after submission.
If you use this dataset in your research, please cite the following paper:
@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}
}
@article{calist2025bridging,
author = {Calist, Inocent and Kim, Minseok},
title = {{Bridging FR1 to FR3: Urban Channel
Parameterization Anchored at 4.85 GHz
and Literature-Referenced Cross-Band
Trends}},
journal = {arXiv preprint},
year = {2025},
eprint = {2512.00707},
url = {https://arxiv.org/abs/2512.00707}
}
@article{zhang2026environment,
author = {Zhang, Xuejian and He, Ruisi and
Kim, Minseok and Calist, Inocent and
Yang, Mi and Qi, Ziyi},
title = {{Environment-Aware Channel Prediction
for Vehicular Communications: A
Multimodal Visual Feature Fusion
Framework}},
journal = {arXiv preprint},
year = {2026},
eprint = {2604.02396},
url = {https://arxiv.org/abs/2604.02396}
}
This dataset is released under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.
For questions regarding the dataset or collaboration inquiries, please contact: