Zobrazeno 1 - 10
of 382
pro vyhledávání: '"Haneda, Katsuyuki"'
The study of 5G base station antenna array performance for self-interference reduction is derived. The line of sight signal channel model and Rayleigh channel model are developed. The relevant calculations for channel capacities are shown. This is th
Externí odkaz:
http://arxiv.org/abs/2405.14220
This paper introduces a novel approach to experimentally characterize effective human skin permittivity at sub-Terahertz (sub-THz) frequencies, specifically from $140$~to $210$~GHz, utilizing a quasi-optical measurement system. To ensure accurate mea
Externí odkaz:
http://arxiv.org/abs/2405.11863
This manuscript proposes a method for characterizing the complex permittivity of the human finger skin based on an open-ended waveguide covered with a thin dielectric sheet at sub-terahertz frequencies. The measurement system is initially analyzed th
Externí odkaz:
http://arxiv.org/abs/2405.06106
This manuscript presents a novel method for characterizing the permittivities of low-loss dielectric slabs in sub-terahertz (sub-THz) frequencies, specifically above 100 GHz using a quasi-optical system. The algorithm is introduced with detailed deri
Externí odkaz:
http://arxiv.org/abs/2405.06099
Autor:
Weragama, Chathuri, Kokkoniemi, Joonas, De Guzman, Mar Francis, Haneda, Katsuyuki, Kyosti, Pekka, Juntti, Markku
Millimeter-wave (mmWave) and D Band (110--170~GHz) frequencies are poised to play a pivotal role in the advancement of sixth-generation (6G) systems and beyond, owing to their ability to enhance performance metrics such as capacity, ultra-low latency
Externí odkaz:
http://arxiv.org/abs/2403.18713
Radio wave propagation simulations based on the ray-optical approximation have been widely adopted in coverage analysis for a range of situations, including the outdoor-to-indoor scenario. This work presents O2I ray-tracing simulations utilizing a co
Externí odkaz:
http://arxiv.org/abs/2210.03159
Autor:
Selimis, Dimitrios G., De Guzman, Mar Francis, Lazarakis, Fotis I., Manganaris, Kyriakos N., Peppas, Kostas P., Haneda, Katsuyuki
In this paper, we present new measurement results to model large-scale path loss, angular spread and channel sparsity at the sub-THz (141-145 GHz) band, for both indoor and outdoor scenarios. Extensive measurement campaigns have been carried out, tak
Externí odkaz:
http://arxiv.org/abs/2209.11324
The rollout of millimeter-wave (mmWave) cellular network enables us to realize the full potential of 5G/6G with vastly improved throughput and ultra-low latency. MmWave communication relies on highly directional transmission, which significantly incr
Externí odkaz:
http://arxiv.org/abs/2208.02480
Penetration of cellphones into markets requires their robust operation in time-varying radio environments, especially for millimeter-wave communications. Hands and fingers of a human cause significant changes in the physical environments of cellphone
Externí odkaz:
http://arxiv.org/abs/2208.01966
The importance of indoor mobile connectivity has increased during the last years, especially during the Covid-19 pandemic. In contrast, new energy-efficient buildings contain structures like low-emissive windows and multi-layered thermal insulations
Externí odkaz:
http://arxiv.org/abs/2207.06185