The use of fully directional links in ad-hoc networks improves the overall network performance but complicates the process of neighbor discovery. In most of the state-of-the-art schemes, nodes switch their direction e...
ISBN:
(数字)9781728149059
ISBN:
(纸本)9781728149066
The use of fully directional links in ad-hoc networks improves the overall network performance but complicates the process of neighbor discovery. In most of the state-of-the-art schemes, nodes switch their direction either randomly or in a predefined sequence, without considering the result of past discovery attempts in each sector. This introduces high discovery latency and severe long tail problem, especially for high density networks and/or narrow beams. To overcome these limitations, we propose two novel decentralized, and low complexity reinforcement learning-based neighbor discovery schemes in this paper. In these schemes, the neighbor discovery is mapped to a stochastic multi-player game, where each node independently adjusts its policy via the Q-learning based scheme to minimize the discovery latency. Effectiveness of the proposed schemes is assessed through numerical results, and it is observed that these proposed schemes are able to achieve a significantly faster network-wide neighbor discovery, while incurring low overhead and computational complexity.
In this paper, we consider the problem of computing the rank of a block-structured symbolic matrix (a generic partitioned matrix) A = (Aαβxαβ), where Aαβ is a 2 × 2 matrix over a field F and xαβ is an ind...
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Despite the immense progress in the recent years, efficient solutions for monitoring remote areas are still missing today. This is especially notable in the context of versatile maritime and offshore use cases, owing ...
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With the development of wireless communication, higher requirements arise for train-ground wireless communications in high-speed railway (HSR) scenarios. The millimeter-wave (mm-wave) frequency band with rich spectrum...
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Fluid antenna systems (FAS) are among the most promising technologies for the sixth generation (6G) mobile communication networks. Unlike traditional fixed-position multiple-input multiple-output (MIMO) systems, a FAS...
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The current data-centric security architecture for the Information Centric Network (ICN) does not provide efficient user authentication mechanisms, thus causing undesirable issues such as interest flooding a ttacks (I...
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The fundamental capacity limits of intelligent reflecting surface (IRS)-assisted multi-user wireless communication systems are investigated in this paper. Specifically, the capacity and rate regions for both capacity-...
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This paper demonstrates a simulation-assisted measurement technique to determine the gain of an antenna accurately in an open test site. This technique is based on two-antenna gain determination method using Friis equ...
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We employ the physics of chiral bound state in the continuum and suggest planar chiral metasurfaces with near-perfect circular dichroism (CD). We demonstrate experimentally metasurfaces with CD=0.9 with Q factor excee...
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ISBN:
(数字)9781957171050
ISBN:
(纸本)9781665466660
We employ the physics of chiral bound state in the continuum and suggest planar chiral metasurfaces with near-perfect circular dichroism (CD). We demonstrate experimentally metasurfaces with CD=0.9 with Q factor exceeding Q=390 at optical frequencies.
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