| Presentation | 2021-11-10 A Study of Delay Characteristics of Time Domain Channel Model for Terahertz Band Hiroto Ebisawa, Zhaona Wu, Kenta Umebayasi, Janne Lehtomaki, Nizar Zorba, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we consider the channel model in THz band for future wireless communication systems. To design wireless communication system using the THz band, it is important to understand the channel characteristics and to model them. The propagation of THz waves is affected by frequency selective fading due to the molecular absorption by mainly water in the atmosphere, throughout the THz band. This unique phenomenon of THz band has not been considered in the microwaves and millimeter waves used for conventional wireless communications. However, it has a significant affected network coverage and achievable data rate in the THz band. In this paper, we investigate the delay characteristics of the LoS channel by assuming the impulse response as a time domain channel model in the THz band. In the related work, the propagation characteristics of the LoS channel have been shown such as average delay, delay spread and total received energy. As a result of further investigation, we found that the time when receiver receives the direct wave, have additional delay than the propagation delay calculated by propagation distance / light speed. This additional delay beyond the propagation delay changed by distance and frequency. So, we formulate the additional delay from the group delay of channel and investigate its characteristics. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Terahertz Band / Channel Models / Impulse Response / Molecular Absorption / Propagation Delay |
| Paper # | AP2021-105 |
| Date of Issue | 2021-11-03 (AP) |
| Conference Information | |
| Committee | AP / RCS |
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| Conference Date | 2021/11/10(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | NBC-Bekkan (Nagasaki) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Chair | Hiroshi Yamada(Niigata Univ.) / Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Mitoshi Fujimoto(Fukui Univ) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) |
| Secretary | Mitoshi Fujimoto(NTT DOCOMO) / Toshihiko Nishimura(National Defense Academy) / Tomoya Tandai(NEC) / Fumihide Kojima(Panasonic) |
| Assistant | Dr. Kim(Niigata Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation / Technical Committee on Radio Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study of Delay Characteristics of Time Domain Channel Model for Terahertz Band |
| Sub Title (in English) | |
| Keyword(1) | Terahertz Band |
| Keyword(2) | Channel Models |
| Keyword(3) | Impulse Response |
| Keyword(4) | Molecular Absorption |
| Keyword(5) | Propagation Delay |
| 1st Author's Name | Hiroto Ebisawa |
| 1st Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| 2nd Author's Name | Zhaona Wu |
| 2nd Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| 3rd Author's Name | Kenta Umebayasi |
| 3rd Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| 4th Author's Name | Janne Lehtomaki |
| 4th Author's Affiliation | University of Oulu(University of Oulu) |
| 5th Author's Name | Nizar Zorba |
| 5th Author's Affiliation | Qatar University(Qatar University) |
| Date | 2021-11-10 |
| Paper # | AP2021-105 |
| Volume (vol) | vol.121 |
| Number (no) | AP-233 |
| Page | pp.pp.28-33(AP), |
| #Pages | 6 |
| Date of Issue | 2021-11-03 (AP) |