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 | ||
|---|---|---|---|---|---|
| Appearance |  |  |  |
||
| 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 |
||
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.
