TY - JOUR
T1 - A Channel Model for Polarized Off-Body Communications with Dynamic Users
AU - Turbic, Kenan
AU - Correia, Luis M.
AU - Beko, Marko
N1 - info:eu-repo/grantAgreement/FCT/5876/147324/PT#
Project UID/MULTI/04111/0213.
Project UID/MULTI/04111/0216.
Project foRESTER PCIF/SSI/0102/2017.
Grant IF/00325/2015.
PY - 2019/11
Y1 - 2019/11
N2 - This paper presents an off-body channel model for polarized communications with dynamic users. The model is based on Geometrical Optics and Uniform Theory of Diffraction and accounts for free space propagation, reflections, and diffractions. It allows for arbitrary antennas' polarizations and gain patterns and supports a number of on-body antenna placements. In order to take the influence of users' motion into account, a mobility model for wearable antennas on dynamic users is used. Signal depolarization mechanisms are identified, and simulations are performed to analyze the influence of user dynamics on the channel. The results show that significant polarization mismatch losses occur due to wearable antenna rotations, resulting in received power variations up to 37.5 dB for the line-of-sight component and 41.4 dB for the scattered one. The importance of taking signal polarization into account is demonstrated by comparing the simulation results between polarized and nonpolarized channel models in a free space propagation scenario, where a difference up to 53 dB in between the two is observed.
AB - This paper presents an off-body channel model for polarized communications with dynamic users. The model is based on Geometrical Optics and Uniform Theory of Diffraction and accounts for free space propagation, reflections, and diffractions. It allows for arbitrary antennas' polarizations and gain patterns and supports a number of on-body antenna placements. In order to take the influence of users' motion into account, a mobility model for wearable antennas on dynamic users is used. Signal depolarization mechanisms are identified, and simulations are performed to analyze the influence of user dynamics on the channel. The results show that significant polarization mismatch losses occur due to wearable antenna rotations, resulting in received power variations up to 37.5 dB for the line-of-sight component and 41.4 dB for the scattered one. The importance of taking signal polarization into account is demonstrated by comparing the simulation results between polarized and nonpolarized channel models in a free space propagation scenario, where a difference up to 53 dB in between the two is observed.
KW - Body area networks (BANs)
KW - dynamic users
KW - polarized off-body channel
KW - wireless communication
UR - http://www.scopus.com/inward/record.url?scp=85077759720&partnerID=8YFLogxK
U2 - 10.1109/TAP.2019.2925157
DO - 10.1109/TAP.2019.2925157
M3 - Article
AN - SCOPUS:85077759720
SN - 0018-926X
VL - 67
SP - 7001
EP - 7013
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 11
M1 - 8753689
ER -