Optics & Laser Technology, Год журнала: 2024, Номер 183, С. 112338 - 112338
Опубликована: Дек. 18, 2024
Язык: Английский
Polymers, Год журнала: 2024, Номер 16(18), С. 2607 - 2607
Опубликована: Сен. 14, 2024
This review explores the application of Long Short-Term Memory (LSTM) networks, a specialized type recurrent neural network (RNN), in field polymeric sciences. LSTM networks have shown notable effectiveness modeling sequential data and predicting time-series outcomes, which are essential for understanding complex molecular structures dynamic processes polymers. delves into use models polymer properties, monitoring polymerization processes, evaluating degradation mechanical performance Additionally, it addresses challenges related to availability interpretability. Through various case studies comparative analyses, demonstrates different science applications. Future directions also discussed, with an emphasis on real-time applications need interdisciplinary collaboration. The goal this is connect advanced machine learning (ML) techniques science, thereby promoting innovation improving predictive capabilities field.
Язык: Английский
Процитировано
7
Drones, Год журнала: 2024, Номер 8(7), С. 300 - 300
Опубликована: Июль 6, 2024
Unmanned aerial vehicles (UAVs) are extensively employed in pursuit, rescue missions, and agricultural applications. These operations require substantial data video transmission, demanding significant spectral resources. The ultra-broad bandwidth of 0.1–10 THz the Terahertz (THz) frequency range is essential for future UAV-based wireless communications. However, available spectrum varies with transmission distance. To enhance efficiency over this variable bandwidth, we propose using hierarchical modulation (HM) overlapped traditional quadrature amplitude (QAM) non-overlapped closer users. Furthermore, analyze single-user case utilize block-coordinated descent (BCD) method to jointly optimize order, subcarrier sub-band power improve system sum rate. Finally, considering mobility randomness UAV users, design a switching rule dynamically adjust changes distance as users move, thereby enhancing rates. Simulation results demonstrate superior performance rate complexity compared existing methods such (HBM) HM schemes.
Язык: Английский
Процитировано
2
Sensors, Год журнала: 2024, Номер 24(15), С. 5007 - 5007
Опубликована: Авг. 2, 2024
Advancements in assisted driving technologies are expected to enable future passengers use a wide range of multimedia applications electric vehicles (EVs). To address the bandwidth demands for high-resolution and immersive videos during peak traffic, this study introduces bandwidth-management algorithm support differentiated streaming services heterogeneous vehicle-to-everything (V2X) networks. By leveraging cellular 6G base stations, along with Cell-Free (CF) Massive Multi-Input Multi-Output (mMIMO) Wi-Fi 7 access points, aims provide high-coverage, high-speed, low-interference V2X network environment. Additionally, Li-Fi technology is employed supply extra limited connectivity via V2V communication. Importantly, addresses urgency prioritization different ensure smooth execution emergency pre-downloading mechanism specifically non-real-time applications. Through simulations, algorithm’s effectiveness meeting EV users’ needs various demonstrated. During peak-bandwidth-demand periods, users experienced an average increase 47%. Furthermore, utilization across landscape significantly improved.
Язык: Английский
Процитировано
0
Remote Sensing, Год журнала: 2024, Номер 16(16), С. 3083 - 3083
Опубликована: Авг. 21, 2024
This paper considers a terahertz (THz) dual-function multi-input multi-output (MIMO) radar and communication system with the assistance of reconfigurable intelligent surface (RIS) jointly designs constant modulus (CM) waveform RIS phase shifts. A weighted optimization scheme is presented, to minimize sum three objectives, including multi-user interference (MUI) energy, negative multi-target illumination power MIMO similarity error under CM constraint. For formulated non-convex problem, novel alternating coordinate descent (ACD) algorithm introduced, transform it into two subproblems for shift design. Unlike existing algorithms that solve each subproblem by iteratively approximating optimal solution iteration stepsize selection, ACD can alternately dividing multiple simpler problems, achieve closed-form solutions. Our numerical simulations demonstrate superiorities over methods. In addition, impacts weighting coefficients, channel conditions on performance THz are analyzed.
Язык: Английский
Процитировано
0
Electronics, Год журнала: 2024, Номер 13(23), С. 4579 - 4579
Опубликована: Ноя. 21, 2024
In the next-generation communication systems, multiple access (MA) will play a crucial role in achieving high throughput to support future-oriented services. Recently, rate-splitting (RSMA) has received much attention from both academia and industry due its ability flexibly mitigate inter-user interference broad range of regimes. Further, with growing emphasis on spectrum resource utilization, integrated sensing (ISAC) technology, which improves efficiency by merging radar signals, is expected be one key candidate technologies for sixth-generation (6G) wireless networks. this paper, we first investigate evolution existing MA techniques basic principles RSMA-assisted ISAC systems. Moreover, make future highlight prime 6G such as non-terrestrial networks (NTN), reconfigurable intelligent surfaces (RIS), millimeter wave (mmWave) terahertz (THz) technologies, vehicular-to-everything (V2X), along main technical challenges potential benefits pave way
Язык: Английский
Процитировано
0
Optics & Laser Technology, Год журнала: 2024, Номер 183, С. 112338 - 112338
Опубликована: Дек. 18, 2024
Язык: Английский
Процитировано
0