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Two-way relaying (TWR) reduces the spectral-efficiency loss caused in conventional half-duplex relaying. TWR is possible when two nodes exchange data simultaneously through a relay. In cellular systems, data exchange between base station…

信息论 · 计算机科学 2013-07-16 Rohit Budhiraja , Karthik KS , Bhaskar Ramamurthi

This paper studies a wireless powered mobile edge computing (MEC) system with device-to-device (D2D)-enabled task offloading. In this system, a set of distributed multi-antenna energy transmitters (ETs) use collaborative energy beamforming…

信息论 · 计算机科学 2019-11-01 Dixiao Wu , Feng Wang , Xiaowen Cao , Jie Xu

This study investigates an experimental software defined radio (SDR) implementation on 180 GHz. Rate scarcity and frequency sparsity are discussed as hardware bottlenecks. Experimental challenges are explained along with the derived system…

信号处理 · 电气工程与系统科学 2024-04-01 Eray Guven , Gunes Karabulut Kurt

The problem of the distributed recovery of jointly sparse signals has attracted much attention recently. Let us assume that the nodes of a network observe different sparse signals with common support; starting from linear, compressed…

最优化与控制 · 数学 2016-11-15 Sophie M. Fosson , Javier Matamoros , Carles Anton-Haro , Enrico Magli

Delay tomography has so far burdened source and receiver measurement nodes in a network with two requirements such as path establishment and clock synchronization between them. In this letter, we focus on the clock synchronization problem…

网络与互联网体系结构 · 计算机科学 2014-02-24 Kensuke Nakanishi , Shinsuke Hara , Takahiro Matsuda , Kenichi Takizawa , Fumie Ono , Ryu Miura

A distributed integrated sensing and communication (D-ISAC) system offers significant cooperative gains for both sensing and communication performance. These gains, however, can only be fully realized when the distributed nodes are…

信号处理 · 电气工程与系统科学 2025-03-13 Kawon Han , Kaitao Meng , Christos Masouros

Asynchronous radio transceivers often lead to significant range and velocity ambiguity, posing challenges for precise positioning and velocity estimation in passive-sensing perceptive mobile networks (PMNs). To address this issue, carrier…

信号处理 · 电气工程与系统科学 2025-03-24 Xiao-Yang Wang , Shaoshi Yang , Hou-Yu Zhai , Christos Masouros , J. Andrew Zhang

This paper presents a novel time synchronization attack (TSA) model for the Global Positioning System (GPS) based on clock data behavior changes in a higher-order derivative domain. Further, the time synchronization attack rejection and…

信号处理 · 电气工程与系统科学 2021-03-02 Erick Schmidt , Junhwan Lee , Nikolaos Gatsis , David Akopian

Improving the uplink quality of service for users located around the boundaries between cells is a key challenge in LTE systems. Relying on power control, existing approaches throttle the rates of cell-center users, while multi-user…

信号处理 · 电气工程与系统科学 2020-04-14 Mohamed Salah Ibrahim , Ahmed S. Zamzam , Aritra Konar , Nicholas D. Sidiropoulos

In this study, a cross-layer design which combines adaptive modulation and coding (AMC) and hybrid automatic repeat request (HARQ) techniques for a cooperative wireless network is investigated analytically. Previous analyses of such systems…

信号处理 · 电气工程与系统科学 2019-11-13 Ibrahim Ozkan

Wideband millimeter-wave and terahertz (THz) systems can facilitate simultaneous data communication with multiple spatially separated users. It is desirable to orthogonalize users across sub-bands by deploying frequency-dependent beams with…

信号处理 · 电气工程与系统科学 2023-11-17 Aditya Wadaskar , Ding Zhao , Ibrahim Pehlivan , Danijela Cabric

This paper studies a multi-user cooperative mobile-edge computing (MEC) system, in which a local mobile user can offload intensive computation tasks to multiple nearby edge devices serving as helpers for remote execution. We focus on the…

信号处理 · 电气工程与系统科学 2018-02-21 Hong Xing , Liang Liu , Jie Xu , Arumugam Nallanathan

In order to enable spectrum sharing, spectrum sensing plays a crucial role in wireless communication. The challenges in wireless spectrum require collaboration among stakeholders to devise innovative solutions. This research explores the…

系统与控制 · 电气工程与系统科学 2023-10-18 Ahmed Temtam , Dimitrie Popescu

Wi-Fi plays a crucial role in connecting electronic devices and providing communication services in everyday life. Recently, there has been a growing demand for services that require low-latency communication, such as real-time…

信息论 · 计算机科学 2025-08-29 Seungmin Lee , Changmin Lee , Si-Chan Noh , Joonsoo Lee

Extreme Edge Computing (EEC) pushes computing even closer to end users than traditional Multi-access Edge Computing (MEC), harnessing the idle resources of Extreme Edge Devices (EEDs) to enable low-latency, distributed processing. However,…

This paper presents an intra coding tool, named Merge mode for Template-based Intra Mode Derivation (TIMD). TIMD-Merge has been adopted in the 15\textsuperscript{th} version of the Enhanced Compression Model (ECM) software that explores…

多媒体 · 计算机科学 2025-03-25 Mohsen Abdoli , Ramin G. Youvalari , Frank Plowman , Alexandre Tissier

This paper examines synchronization of computer clocks connected via a data network and proposes a skewless algorithm to synchronize them. Unlike existing solutions, which either estimate and compensate the frequency difference (skew) among…

最优化与控制 · 数学 2013-08-21 Enrique Mallada , Xiaoqiao Meng , Michel Hack , Li Zhang , Ao Tang

In this paper, we propose a novel Kalman Filter (KF)-based uplink (UL) joint communication and sensing (JCAS) scheme, which can significantly reduce the range and location estimation errors due to the clock asynchronism between the base…

信息论 · 计算机科学 2023-06-21 Xu Chen , Zhiyong Feng , J. Andrew Zhang , Xin Yuan , Ping Zhang

Facing a vast amount of connections, huge performance demands, and the need for reliable connectivity, the sixth generation of communication networks (6G) is envisioned to implement disruptive technologies that jointly spur connectivity,…

In this paper, we propose a fully distributed algorithm for joint clock skew and offset estimation in wireless sensor networks based on belief propagation. In the proposed algorithm, each node can estimate its clock skew and offset in a…

分布式、并行与集群计算 · 计算机科学 2016-07-14 Jian Du , Yik-Chung Wu