2 research outputs found
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
Performance Evaluation of Reconfigurable Intelligent Surface Assisted D-band Wireless Communication
In the recent years, the proliferation of wireless data traffic has led the
scientific community to explore the use of higher unallocated frequency bands,
such as the millimeter wave and terahertz (0.1-10 THz) bands. However, they are
prone to blockages from obstacles laid in the transceiver path. To address
this, in this work, the use of a reconfigurable-intelligent-surface (RIS) to
restore the link between a transmitter (TX) and a receiver (RX), operating in
the D-band (110-170 GHz) is investigated. The system performance is evaluated
in terms of pathgain and capacity considering the RIS design parameters, the
TX/RX-RIS distance and the elevation angles from the center of the RIS to the
transceivers.Comment: 6 pages, 5 figures, accepted for presentation in IEEE 5G World Forum
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