MIMO Baseband CS
Double-Directional CS Line-up
FDM: Frequency division multiplexing
TDM: Time division multiplexing
STDM: Space-time division multiplexing
| | Sub-6GHz (2.4 GHz/5 GHz) | 24 GHz | 60 GHz |
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|---|---|---|---|---|---|
| Appearance |  |  |  |
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| Since | 2022 | 2021 | 2020 | 2014 | |
| Scheme | 8x8 Full MIMO (FDM-STDM) | Phased array (4×4 MIMO TDM) | Phased array (4×4 MIMO TDM) | Direction-scan (Dual-polar 2x2 MIMO TDM) |
|
| RF | Custom | SIVERS IMA | SIVERS IMA | VubIQ | |
| Carrier freq. | 2.462 GHz | 4.85001 GHz | 24.15 GHz | 58.32/60.48/ 62.64/64.8 GHz | 58.25 GHz |
| Signal bandwidth | 40 MHz | 99.9 MHz | 200 MHz | 400 MHz | 400 MHz |
| No. subcarriers | 200 | 510 | 512 | 1,024 | 256 |
| Subcarrier spacing | 195 KHz | 195 KHz | 391 KHz | 391 KHz | 1.56 MHz |
| No. FFT | 4,096 | 4,096 | 2,048 | 2,048 | 512 |
| Sampling rates | 800 MSa/s | 800 MSa/s | 800 MSa/s | 800 MSa/s | 800 MSa/s |
| Delay resolution | 25 ns | 10 ns | 5 ns | 2.5 ns | 2.5 ns |
| Delay span | 5.12 us | 5.12 us | 2.56 us | 2.56 us | 640 ns |
| Tx power | 23 dBm/ant | 26 dBm/ant | 20 dBm/board | 22 dBm/board | 10 dBm |
| Antenna/ Array | 8×8 MIMO | 8×8 MIMO | 8×2-element UPA 12 dBi@Tx 12 dBi@Rx  | 16-element ULA 19 dBi@Tx (BFM06005)  20 dBi@Rx (BFM06010)  |  |
| HPBW | UCA: ~75° (Az), ~70° (El) ULA: 90° (Az/El) | UCA: ~75° (Az), ~70° (El) ULA: 90° (Az/El) | Az: 15° El: 45° | Az: 6° El: 45°(Tx)/18°(Rx) | 30°/12°/3° |
| Gain/EIRP | UCA: 6.5 dBi ULA: 4 dBi | UCA: 6.5 dBi ULA: 4 dBi | 32 dBm | 41 dBm | 34/44 dBm |
| Beam steering | Full azimuth (beamforming) | Full azimuth (beamforming) | Full azimuth (20×20 beams) | Full azimuth (44×48 beams) | Full azimuth ±30° elevation |
| Measurement campagins | UMa, UMi | UMa, UMi | UMa, UMi | Indoor office, Open square, UMa, UMi | Indoor conference room, Entrance hall, Open square |
| Publications | 1, 2, 3, 5 | 1, 2, 3, 5 | 11 | 8, 9, 10, 11 | 4, 5, 6, 7 |
| Global standardization | IEEE P2982, EU COST CA20120 INTERACT | EU COST IRACON, IEEE 802.11ay | |||
| Manual | Sub-6GHz v1.0 | - 60-GHz SIVERS RF v2.1 | 60-GHz VubIQ RF v2.0 |
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Related Publications
- Minseok Kim, Jun-ichi Takada, and Yohei Konishi, “Novel Scalable MIMO Channel Sounding Technique and Measurement Accuracy Evaluation with Transceiver Impairments,” IEEE Trans. Instrum. Meas., Vol.61, No.12, pp. 3185-3197, Dec. 2012 (SCI)
- Minseok Kim, Yohei Konishi, Yuyuan Chang, and Jun-ichi Takada, “Large Scale Parameters and Double-Directional Characterization of Indoor Wideband Radio Multipath Channels at 11 GHz,” IEEE Trans. Antennas Propag., Vol. 62, No. 1, pp. 430-441, Jan. 2014 (SCI)
- Yohei Konishi, Minseok Kim, Yuyuan Chang, Jun-ichi Takada, “Versatile Radio Channel Sounder for Double Directional and Multi-link MIMO Channel Measurements at 11 GHz,” IEICE Trans. Electron., Vol.E97-C, No.10, pp. 994-1004, Oct. 2014, ISSN:0916-8524 (SCIE)
- Karma Wangchuk, Kento Umeki, Tatsuki Iwata, Panawit Hanpinitsak, Minseok Kim, Kentaro Saito, Jun-ichi Takada, “Double Directional Millimeter Wave Propagation Channel Measurement and Polarimetric Cluster Properties in Outdoor Urban Pico-cell Environment,” IEICE Trans. Commun., Vol.E100-B, No.7, pp.1133-1144, Jul. 2017 (SCI)
- (Tutorial) Minseok Kim, Jun-ichi Takada, Kentaro Saito, “Multi-dimensional Radio Channel Measurement, Analysis and Modeling for High Frequency Bands,” IEICE Trans. Commun., Vol.E101-B, No.2, pp.293-308, Feb. 2018 (SCI)
- Minseok Kim, Satoru Kishimoto, Satoshi Yamakawa, Ke Guan, “Millimeter-Wave Intra-Cluster Channel Model for In-Room Access Scenarios,” IEEE Access, Vol.8, pp. 82042-82053, May 2020 (SCIE)
- Minseok Kim, Tatsuki Iwata, Shigenobu Sasaki, Jun-ichi Takada, “Millimeter-Wave Radio Channel Characterization using Multi-Dimensional Sub-Grid CLEAN Algorithm,” IEICE Trans. Commun.,Vol.E103-B, No.7, pp.767-779, Jul. 2020 (SCI)
- Minseok Kim, Shuaiqin Tang, Keiichiro Kumakura, “Fast Double-Directional Full Azimuth Sweep Channel Sounder Using Low-Cost COTS Beamforming RF Transceivers,” IEEE Access, Vol.9, pp. 80288-80299, Jun. 2021 (SCIE)
- Minseok Kim, Keiichiro Kumakura, Shuaiqin Tang, Hibiki Tsukada, “Multipath Clusters Observed in Outdoor Open Square Environments at 60 GHz,” 2021 IEEE 94th IEEE Vehicular Technology Conference (VTC), Sept. 2021.
- Hibiki Tsukada, Keiichiro Kumakura, Shuaiqin Tang, Minseok Kim, “Millimeter-Wave Channel Model Parameters for Various Office Environments,” IEEE Access, Vol.10, pp. 60387-60396, Jun. 2022 (SCIE)
- Minseok Kim, Hibiki Tsukada, Keiichiro Kumakura, Riku Takahashi, Naoya Suzuki, Hirokazu Sawada, Takeshi Matsumura, “A 24/60-GHz Dual-Band Double-Directional Channel Sounder Using COTS Phased Arrays,” 2022 IEEE International Conference on Communications (ICC), May 2022.
- 高橋莉玖, 塚田響, 鈴木直也, 日野一世, 金ミンソク, “市街地マクロセル環境におけるSub-6 GHz帯伝搬チャネル特性,” 電子情報通信学会総合大会, B-1-11 (2023年3月). slides
- Minseok Kim, Tsukada Hibiki, Riku Takahashi, Naoya Suzuki, Hino Issei, Hirokazu Sawada, Takeshi Matsumura, “Development of Sub-6 GHz Double-Directional Radio Channel Sounder and Urban Cellular Channel Measurement Results,” IEICE Technical Report, AP2022-225, Feb. 2023 (in Japanese)
金ミンソク, 塚田響, 高橋莉玖, 鈴木直也, 日野一世, 沢田弘和, 松村 武, “Sub-6 GHz帯双角度チャネルサウンダの開発及び市街地環境におけるチャネル測定結果,” 信学技報, AP2022-225, 2023年2月. article , slides - Naoya Suzuki, Riku Takahashi, Banibrata Bag, Minseok Kim, “Characterization of Spatial Consistency of Cluster Channels in Urban Environments at 24 and 60 GHz,” IEEE Antennas Wirel. Propag. Lett., Vol. 23, No. 5, pp.1583-1587, May 2024.
- Hibiki Tsukada, Naoya Suzuki, Banibrata Bag, Riku Takahashi, Minseok Kim, “Millimeter-Wave Urban Cellular Channel Characterization and Recipe for High-Precision Site-Specific Channel Simulation,” IEEE Trans. Veh. Tech., Vol. 74, No. 3, pp. 3598-3612, Mar. 2025
- Inocent Calist, Minseok Kim, “Bridging FR1 to FR3: Urban Channel Parameterization Anchored at 4.85 GHz and Literature-Referenced Cross-Band Trends,” IEEE Trans. Antennas Propag. (submitted)
