Challenges in Middle-Range Wireless Communications at 300GHz-Band
Overview of middle-range wireless transmission challenges using MIMO technology in the 300GHz band. Key technologies for future standardization discussions in IEEE P802.15 Working Group.
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July 2022 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) DCN: 15-22-0374-00-0thz Submission Title: Challenges in Middle-Range Wireless Communications using the 300GHz-Band Date Submitted: July 14, 2022 Source: Tetsuya Kawanishi, Kazuhiko Tamesue, Toshio Sato, Takuro Sato, Waseda University 3-4-1, Okubo, Shinjuku-ku, Tokyo 169-8555, Japan Voice: +81 3 5286 3386, E-Mail: kawanishi@waseda.jp Iwao Hosako, National Institute of Information and Communications Technology (NICT) 4-2-1, Nukui-Kitamachi, Koganei, Tokyo 184-8795, Japan E-Mail: hosako@nict.go.jp Re: n/a Abstract: Overviews of middle-range 300GHz transmission using MIMO is provided. Purpose: Informing SC THz on key technologies for 300GHz transmission based on MIMO for discussion in future THz standardization Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Submission Slide 1 Tetsuya Kawanishi, Waseda Univ., et al
July 2022 DCN: 15-22-0374-00-0thz Challenges in Middle-Range Wireless Communications using the 300GHz- Band Tetsuya Kawanishi, Kazuhiko Tamesue, Toshio Sato, Takuro Sato and Iwao Hosako Waseda University, Japan National Institute of Information and Communications Technology (NICT), Japan Submission Slide 2 Tetsuya Kawanishi, Waseda Univ., et al
July 2022 DCN: 15-22-0374-00-0thz Outline of this contribution Use-cases of middle-range WPAN Link budget for middle-range 300 GHz wireless communication Feasibility study by simulation for path loss and delay of both applications Antenna, RF technologies for this project Submission Slide 3 Tetsuya Kawanishi, Waseda Univ., et al
July 2022 Applications for middle-range WPAN DCN: 15-22-0374-00-0thz High speed wireless communication for personalized 8K videos Medium-range communication to cover stadium or aircraft cabin 300GHz 20Gbps 100 users 300GHz 20Gbps 100 users 70m 70m Use case 2: Aircraft cabin In-flight video services 8K video stream Use case 1: Stadium Personalized video services 8K video stream Submission Tetsuya Kawanishi, Waseda Univ., et al
July 2022 DCN: 15-22-0374-00-0thz A channel plan example 300GHz-band can provide high-speed transmission and multi-channel capability. Each channel offers effective bit rate 20 Gbps with 2.16 GHz bandwidth and can handle 100 compressed streams of HEVC/H.265 8K video (200 Mbps). Total transmission capacity can be 240 Gbps by using 12 channels. 2.16GHz 2.16GHz 2.16GHz 2.16GHz 2.16GHz 2.16GHz 15CH 23CH 13CH 14CH 22CH 12CH Sea level (0km) 298.08 276.48 285.12 278.64 302.4 300.24 282.96 280.80 Frequency (GHz) Pressure: 1,013 hPa Temperature : 20.0 Water vapor density : 13.5 g/m3 Height 12km Height 16km Pressure: 103 hPa Temperature : -56.5 Water vapor density : 0.07 g/m3 Pressure: 193 hPa Temperature : -56.5 Water vapor density : 0.12 g/m3 Submission Slide 5 Tetsuya Kawanishi, Waseda Univ., et al
July 2022 DCN: 15-22-0374-00-0thz Link budget for middle-range WPAN Link budget for 100m distance communication is estimated High EIRP (43 dBm) is achieved by hybrid beam-forming EIRP 43dBm Tx Antenna 23dBi 20dBm Tx Power Path loss Throughput 20Gbps CP-OFDM w/ 64-QAM subcarrier -122dB 0dBm Bandwidth 2.16GHz Atmospheric loss Rx Level CNR=23.8dB -57dBm Rx Antenna 23dBi -1.0dB -80.8dBm thermal noise Access Point Terminal Distance d=100m (Target 70m + margin 30m) Submission Slide 6 Tetsuya Kawanishi, NICT, et al
July 2022 DCN: 15-22-0374-00-0thz Feasibility study using simulation Propagation analysis for the stadium using the ray tracing method - Place 5 blocks of 16x10 sheets and a metal roof at 20 m height to simulate the stadium - Path loss is estimated as 91 dB at 50 m and 124 dB at 70 m that is close to the value in link budget - The impulse response at the 50m receiving point is 188.7 nsec Power (dBm) Metal roof (20 m in height) Response time 50m Tx Rx3Path loss 91dB -91dB loss 33m Rx2 Rx1 18m Rx1 Rx2 16x10 seats 16x10 seats Rx3 16x10 seats 16x10 seats 16x10 seats Configuration of simulation (stadium) Time of arrival (sec) Submission Slide 7 Tetsuya Kawanishi, NICT, et al
November 2018 System Design for middle-range WPAN DCN: 15-22-0374-00-0thz Target - Throughput - Spectral efficiency - Bandwidth - Distance Key Specification - 3x3 MIMO - CP-OFDM 64-QAM subcarriers and LDPC (1440, 1344) 256-QAM subcarriers and LDPC (1440, 1056) 20 Gbps per channel 10 bps/Hz 2.16 GHz per channel 70 m 3x3MIMO RHCP LHCP RHCP LHCP ANT ANT ANT ANT Transmitter Receiver IP data IP data QSFP+ I/F QSFP+ I/F ANT ANT LP LP orthogonal channel and multipath PHY PHY RHCP Right-handed circular polarization LHCP Left-handed circular polarization LP Linearly polarized wave Submission Slide 8 Tetsuya Kawanishi, NICT, et al
July 2022 DCN: 15-22-0374-00-0thz Antenna, RF technologies High power amplifier -Parallel 16 InP HEMTs to realize 20 dBm High gain patch array antenna using the low loss dielectric substrate - Right/Left Circular Polarized 8x8 Elements Antenna Array - Broad axial-ratio by 2-times sequential connection method Submission Slide 9 Tetsuya Kawanishi, NICT, et al
July 2022 DCN: 15-22-0374-00-0thz 8x8 Elements Antenna Array RHCP element Distance between elements 0.65 2-times sequential sequential pair 1 sequential pair 2 Submission Slide 10 Tetsuya Kawanishi, NICT, et al
July 2022 DCN: 15-22-0374-00-0thz Summary and Discussion Research on 300GHz medium-range wireless transmission is underway. The transmission speed is targeted at effective bit rate 20 Gbps to deliver HEVC/H.265 8K compressed video to 100 streams. The target communication distance was set at 70 m for the stadium and the aircraft cabin. Feasibility is confirmed through link budget design and simulation. System design and Key technologies including RF amplifier and Antenna are introduced. Submission Slide 11 Tetsuya Kawanishi, NICT, et al
