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The use of modern software-defined radio (SDR) devices enables the implementation of efficient communication systems in numerous scenarios. Such technology comes especially handy in the context of search and rescue (SAR) systems, enabling…

信号处理 · 电气工程与系统科学 2023-12-11 Daniel Gil Gaviria , Marcus Müller , Felix Artmann , Laurent Schmalen

The research objectives are exploring characteristics of human mobility patterns, subsequently modelling them mathematically depending on inter-event time and traveled distances parameters using CDRs (Call Detailed Records). The…

社会与信息网络 · 计算机科学 2018-07-16 Suhad Faisal Behadili , Cyrille Bertelle , Loay E. George

Recommender systems easily face the issue of user preference shifts. User representations will become out-of-date and lead to inappropriate recommendations if user preference has shifted over time. To solve the issue, existing work focuses…

信息检索 · 计算机科学 2023-03-29 Wenjie Wang , Xinyu Lin , Liuhui Wang , Fuli Feng , Yunshan Ma , Tat-Seng Chua

In the user-centric cell-free massive MIMO (UC-mMIMO) network scheme, user mobility necessitates updating the set of serving access points to maintain the user-centric clustering. Such updates are typically performed through handoff (HO)…

信息论 · 计算机科学 2025-08-05 Hussein A. Ammar , Raviraj Adve , Shahram Shahbazpanahi , Gary Boudreau , Israfil Bahceci

For dense femtocells, intelligent integrated femtocell/macrocell network architecture, a neighbor cell list with a minimum number of femtocells, effective call admission control (CAC), and handover processes with proper signaling are the…

网络与互联网体系结构 · 计算机科学 2014-12-12 Mostafa Zaman Chowdhury , Yeong Min Jang

Multiple antennas arrays play a key role in wireless networks for communications but also for localization and sensing applications. The use of large antenna arrays at high carrier frequencies (in the mmWave range) pushes towards a…

信号处理 · 电气工程与系统科学 2022-12-14 Antonio A. D'Amico , Andrea de Jesus Torres , Luca Sanguinetti , Moe Win

In traditional spread-spectrum techniques, a wideband transmit signal is obtained by modulating a wideband carrier by a narrowband signal containing a relatively low-rate message. In the receiver, the respective demodulation/despreading…

信号处理 · 电气工程与系统科学 2020-08-17 Alexei V. Nikitin , Ruslan L. Davidchack

Handoff decisions are usually signal strength based because of simplicity and effectiveness. Apart from the conventional techniques, such as threshold and hysteresis based schemes, recently many artificial intelligent techniques such as…

网络与互联网体系结构 · 计算机科学 2014-01-13 P. P. Bhattacharya , Ananya Sarkar , IndranilSarkar , Subhajit Chatterjee

Representing the movements of objects (trips) over a network in a compact way while retaining the capability of exploiting such data effectively is an important challenge of real applications. We present a new Compact Trip Representation…

数据结构与算法 · 计算机科学 2019-01-01 Nieves R. Brisaboa , Antonio Fariña , Daniil Galaktionov , M. Andrea Rodriguez

Due to the short and bursty incoming messages, channel access activities in a wireless random access system are often fractional. The lack of frequent data support consequently makes it difficult for the receiver to estimate and track the…

信息论 · 计算机科学 2011-10-11 Zheng Wang , Jie Luo

A new channel coding approach was proposed in [1] for random multiple access communication over the discrete-time memoryless channel. The coding approach allows users to choose their communication rates independently without sharing the…

信息论 · 计算机科学 2016-11-15 Zheng Wang , Jie Luo

Cross domain recommender systems have been increasingly valuable for helping consumers identify the most satisfying items from different categories. However, previously proposed cross-domain models did not take into account bidirectional…

信息检索 · 计算机科学 2019-10-14 Pan Li , Alexander Tuzhilin

This paper presents a novel control strategy for drone networks to improve the quality of 3D structures reconstructed from aerial images by drones. Unlike the existing coverage control strategies for this purpose, our proposed approach…

最优化与控制 · 数学 2024-04-23 Zhiyuan Lu , Muhammad Hanif , Takumi Shimizu , Takeshi Hatanaka

Mobile users in an ultra-dense millimeter-wave cellular network experience handover events more frequently than in conventional networks, which results in increased service interruption time and performance degradation due to blockages.…

网络与互联网体系结构 · 计算机科学 2021-07-12 Seongjoon Kang , Siyoung Choi , Goodsol Lee , Saewoong Bahk

This letter analyzes the handover probability in a drone cellular network where the initial positions of drone base stations (DBSs) serving a set of user equipment (UE) on the ground are modeled by a homogeneous Poisson point process (PPP).…

信息论 · 计算机科学 2021-01-26 Morteza Banagar , Vishnu Vardhan Chetlur , Harpreet S. Dhillon

At present, attention mechanism has been widely applied to the fields of deep learning models. Structural models that based on attention mechanism can not only record the relationships between features position, but also can measure the…

机器学习 · 计算机科学 2021-05-12 Xiaolong Wei , LiFang Yang , Xianglin Huang , Gang Cao , Tao Zhulin , Zhengyang Du , Jing An

In Mobile Ad-Hoc networks, broadcasting is a fundamental operation in the network layer. A node transmits a rebroadcast message to any or all other nodes whenever it receives for the first time. It will generate several redundant…

网络与互联网体系结构 · 计算机科学 2013-11-18 Geet Kalani , A Nagaraju

An increasing number of retailers are expanding their channels to the offline and online domains, transforming them into multi-channel retailers. This transition emphasizes the need for cross-channel recommendations. Given that each retail…

信息检索 · 计算机科学 2024-07-19 Yijin Choi , Jongkyung Shin , Chiehyeon Lim

In this work, we face the issue of achieving an efficient dynamic mapping in vehicular networking scenarios, i.e., to obtain an accurate estimate of the positions and trajectories of connected vehicles in a certain area. State of the art…

网络与互联网体系结构 · 计算机科学 2019-10-17 Federico Mason , Marco Giordani , Federico Chiariotti , Andrea Zanella , Michele Zorzi

This paper elaborates on Conditional Handover (CHO) modelling, aimed at maximizing the use of contention free random access (CFRA) during mobility. This is a desirable behavior as CFRA increases the chance of fast and successful handover.…

网络与互联网体系结构 · 计算机科学 2023-07-28 Jedrzej Stanczak , Umur Karabulut , Ahmad Awada