Comments on "Near-Body Shadowing Analysis at 60 GHz"

• Published in: IEEE transactions on antennas and propagation Vol. 65; no. 6; p. 3314
• Main Authors: Kim, Donggu, Lee, Hoojin, Kang, Joonhyuk
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.06.2017; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 60 GHz communications; Analytical models; Antennas; Biological system modeling; Diffraction; Electric power distribution; Fading channels; Human body; Indexes; Indoor communication; Indoor environments; Mathematical models; near body; Shadow mapping; Shadows; specular magnitudes; two-wave with diffuse power (TWDP) distribution
• ISSN: 0018-926X; 1558-2221
• DOI: 10.1109/TAP.2017.2697414

In a recent paper, Mavridis et al. proposed a statistical diffraction model to characterize the channel near the human body (i.e., near-body zone) at 60 GHz in an indoor communication environment. Specifically, they demonstrated that the near-body zone has been separated into the front and back regions, and both regions can be theoretically modeled by a two-wave with diffuse power (TWDP) distribution, the statistical properties of which are described by two parameters <inline-formula> <tex-math notation="LaTeX">K </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">\Delta </tex-math></inline-formula> defined as <disp-formula> <tex-math notation="LaTeX">\begin{equation*} K=\frac {V_{1}^{2}+V_{2}^{2}}{2\sigma ^{2}} \end{equation*} </tex-math></disp-formula> and <disp-formula> <tex-math notation="LaTeX">\begin{equation*} \Delta =\frac {2V_{1}V_{2}}{V_{1}^{2}+V_{2}^{2}}, \end{equation*} </tex-math></disp-formula> which represent the ratio of the total specular power to the diffused power and the relative power level of the two specular components, respectively, where <inline-formula> <tex-math notation="LaTeX">V_{1} </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">V_{2} </tex-math></inline-formula> denote the magnitudes of the two specular components, and <inline-formula> <tex-math notation="LaTeX">2\sigma ^{2} </tex-math></inline-formula> represents the average power of the diffused components.