6G - Teraherz Channel Characterization                              Home : www.sharetechnote.com

 

 

 

 

 

Terahertz Channel Characterization

 

I think the way we investigate on channel characterization would be similar regardless of the frequency range. So if you have any knowledge on channel characterization for any of previous technology (e.g, 5G channel characterization), it would be much easier to follow up on Terahertz Channel Characterization. If you are interested in my note about 5G channel characterized done in before and early 5G standization, check this page.

As of initial writing of this note (May 2021), I haven't got much of the information about 300Ghz ~ 1 Thz yet. Most of the information (e.g, tech articles or papers) on this topic is largely around D-Band (110~170 Ghz) or W-Band(75~110Ghz).

: In early 2021, some papers and white papers are published on channel sounder in 300 Ghz region, but with distance between Transmitter and Reciever is just around a few meters.

 

 

 

Atmospheric Attenuation

 

This is about Atmospheric Attenuation. As commonly understood, we see the general tendency of increasing attenuation as frequency goes higher. As a result, we will see higher attenuation in Tera Hertz candate (C) frequency comparing to 5G or D band (B). In the 6G Candidate ranges, we see much less attenuation in dry environment ((1) & (2)) comparing to standard environment ((3) & (4)) implying that interacting with water molecule would play an important role. The attenuation at higher altitude ((1) & (3)) is lower than the case at sea level ((2) & (4)).

 

 

Source : NYT Wireless - Publication

 

 

 

Attenuation by Rain

 

In terms of Attenuation by Rain, it is obvious that the precipitation affects a lot on attenuation, but regarding the frequency effects there is not much differences between 5G FR2(C) and 6G Candiate Frequency(D, E).

 

 

Source : NYT Wireless - Publication

 

 

 

Path Loss Model

 

 

 

 

 

Source : NYT Wireless - Publication

 

 

 

Attenuation by Foliage

 

Source : NYT Wireless - Publication

 

 

Source : NYT Wireless - Publication

 

 

 

Channel Sounding Example : THz Channel Sounding: Design and Validation of a High Performance Channel Sounder at 300 GHz

 

 

 

 

 

 

 

 

 

 

Channel Sounding Example : Channel Sounding Techniques for Applications in THz Communications

 

 

 

 

 

 

 

 

Reference

 

 

 

YouTube