Page 40 - ITU Journal: Volume 2, No. 1 - Special issue - Propagation modelling for advanced future radio systems - Challenges for a congested radio spectrum

ITU Journal: ICT Discoveries, Vol. 2(1), December 2019

ACKNOWLEDGEMENT
The research leading to these results received
funding from the French National Research Agency
(ANR-17-CE25-0013) within the framework of the
project BRAVE. The authors are also grateful for
the feedback obtained for this work in the
framework of the COST Action CA15104 IRACON.

REFERENCES

[1] Y. Corre, G. Gougeon, J-B. Doré, S. Bicaïs,
B. Miscopein, M. Saad, J. Palicot, F. Bader, and
E. Faussurrier, “Sub-THz spectrum as
Enabler for 6G Wireless Communications up
Fig. 15 – CDF of the delay spread to 1 Tbps”, 6G wireless summit, Levi, Finland,
March 2019
Table 2 – Excess path-loss parameters at frequency 150 GHz
[2] ITU-R P.1238-9, Propagation data and
prediction methods for the planning of indoor
radiocommunication systems and radio local
area networks in the frequency range
300 MHz to 100 GHz, June 2017.

[3] ITU-R P.1411-9, Propagation data and
5. CONCLUSION prediction methods for the planning of short-
The availability of large radio spectrum above range outdoor radiocommunication systems
90 GHz offers opportunities to consider networks and radio local area networks in the
with immense capacities. Before such networks frequency range 300 MHz to 100 GHz, June
can be evaluated, it is important to validate the 2017.
relevant scenarios and their requirements. Both [4] S. Nguyen, J. Jarvelainen, A. Karttunen,
indoor and outdoor scenarios at sub-THz K. Haneda and J. Putkonen, “Comparing
frequencies have been considered in this work. Radio Propagation Channels Between 28 and
Various propagation related properties like excess 140 GHz Bands in a Shopping Mall”, in the
path loss and delay spread results have been Proc. of the 12th European Conf. on Antennas
reported for LoS, NLoS with vegetation and NLoS and Propagation (EuCAP), London,
cases. Both isotropic and beam-forming antennas April 2018.
have been considered and reported.
[5] L. Pometcu and R. D’Errico, “Characterization
This work enabled the extension of the existing of sub-THz and mmWave Propagation
channel modeling frameworks to be utilized for Channel for Indoor Scenarios”, in the Proc. of
sub-THz frequencies. Detailed environmental data the 12th European Conf. on Antennas and
obtained from LIDAR point clouds was utilized to Propagation (EuCAP), London, April 2018.
accurately consider the impact by various
obstacles like vegetation. Extractions of analytical [6] S. Nguyen et al., “On the Frequency
models from the channel characterization have Dependency of Radio Channel’s Delay Spread:
also been performed to enable future utilization Analyses and Findings From mmMAGIC
and validation by measurements of the sub-THz Multi-frequency Channel Sounding”, in the
channels. The proposed simple sub-THz channel Proc. of the 12th European Conf. on Antennas
models can be further exploited to design, assess and Propagation (EuCAP), London,
and evaluate the channels and networks until April 2018.
further specificities related to the channel are
available through extensive measurements. In the
meanwhile, this approach provides highly accurate
initial understanding of the sub-THz channel.

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