Z. Wu, H. Ebisawa, K. Umebayashi, J. Lehtomäki and N. Zorba, "Time Domain Propagation Characteristics with Causal Channel Model for Terahertz Band," 2021 IEEE International Conference on Communications Workshops (ICC Workshops), 2021, pp. 1-6, doi: 10.1109/ICCWorkshops50388.2021.9473820
Time domain propagation characteristics with causal channel model for Terahertz band
|Author:||Wu, Zhaona1; Ebisawa, Hiroto1; Umebayashi, Kenta1;|
1Tokyo University of Agriculture and Technology
2Centre for Wireless Communications, University of Oulu
|Online Access:||PDF Full Text (PDF, 0.8 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2021102552119
Institute of Electrical and Electronics Engineers,
|Publish Date:|| 2021-10-25
In recent years, as more devices are connected to wireless communication systems, the demand for spectrum has increased. As conventional spectrum resources are limited, the THz band becomes an interesting option of more spectrum for wireless communication. However, the channel in THz band has different characteristics compared to the channels in typical frequency bands, and therefore, it is necessary to perform more research to understand the THz channel propagation. In this paper, we focus on the time domain THz channel model under line of sight (LoS) propagation conditions and investigate the channel propagation characteristics in time domain. Firstly, in the full frequency band (FFB) scenario, the time domain impulse responses, which correspond to the time domain THz channel model, are presented for different distances. In the impulse responses, there are significantly delayed paths due to the molecular absorption which causes significant frequency selectivity. Secondly, we extend the model to the limited frequency band (LFB) scenario by applying the root raised cosine filters. The results indicate that the richness of the delayed paths in the impulse response depends on the selected frequency band. In addition, the results indicate that the time delay and total energy strongly depend on the distance whereas the delay spread varies as a function of frequency.
IEEE International Conference on Communications workshop
2021 IEEE International Conference on Communications Workshops, ICC Workshops 2021
IEEE International Conference on Communications Workshops
|Type of Publication:||
A4 Article in conference proceedings
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This work was partially funded by project Marubeni – Qatar University number M-QJRC-2020-4. The statements made herein are solely the responsibility of the authors. The work of J. Lehtom¨aki was supported by the Academy of Finland 6Genesis Flagship (grant no. 318927).
|Academy of Finland Grant Number:||
318927 (Academy of Finland Funding decision)
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