2 research outputs found
A cooperative localization-aided tracking algorithm for THz wireless systems
In this paper, a novel cooperation-aided localization and tracking approach,
suitable for terahertz (THz) wireless systems is presented. It combines an
angle of arrival (AoA) tracking algorithm with the two-way time of arrival
method, in order to accurately track the user equipment (UE) position and
reduce the deafness caused by the estimation errors of the tracking algorithms.
This algorithm can be used by one base station (BS) to estimate the UE
position, or by multiple BSs, that cooperate with each other to increase the
accuracy of the estimations, as well as the probability of successful
estimations and guarantee low-estimation overhead. The efficiency of the
algorithm is evaluated in terms of deafness and probability of successful AoA
estimation and is compared with the corresponding performance of the fast
channel tracking algorithm.Comment: 7 pages, 6 figures, IEEE WCNC 2019 (accepted paper
Relay-Based Blockage and Antenna Misalignment Mitigation in THz Wireless Communications
The proliferation of wireless devices in recent years has caused a spectrum
shortage, which led the scientific community to explore the potential of using
terahertz (THz) communications. However, THz systems suffer from severe path
attenuation, blockage, and antenna misalignment. In this paper, we present a
relay-based blockage and antenna misalignment mitigation approach. In more
detail, two relay selection policies are employed, namely best and random relay
selection. The system performance under both policies is evaluated and compared
in terms of average throughput and the probability that throughput of a link is
below the quality of service (QoS) threshold, using Monte Carlo simulations. It
was observed that the effect of both blockage and misalignment can be mitigated
using relays. Moreover, the gain of using relaying to mitigate blockage is much
more significant.Comment: 4 page, 4 figures, 6G summi