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In this work, we focus on the efficiency and scalability of pairwise constraint-based active clustering, crucial for processing large-scale data in applications such as data mining, knowledge annotation, and AI model pre-training. Our goals…

Machine Learning · Computer Science 2025-09-11 Wen-Bo Xie , Xun Fu , Bin Chen , Yan-Li Lee , Tao Deng , Tian Zou , Xin Wang , Zhen Liu , Jaideep Srivastavad

Wireless Sensor networks are dense networks of small, low-cost sensors, which collect and disseminate environmental data and thus facilitate monitoring and controlling of physical environment from remote locations with better accuracy. The…

Networking and Internet Architecture · Computer Science 2012-04-13 Deepali Virmani , Tanuj Singhal , Ghanshyam , Khyati Ahlawat , Noble

The wireless sensor networks (WSNs) is a power constrained system, since nodes run on limited power batteries which shorten its lifespan.The main challenge facing us in the design and conception of Wireless Sensor Networks (WSNs) is to find…

Networking and Internet Architecture · Computer Science 2013-06-20 Mostafa Saadi , Moulay Lahcen Hasnaoui , Abderrahim Beni Hssane , Said Benkirane , Mohamed Laghdir

Massive machine-type communication (mMTC) has been regarded as one of the most important use scenarios in the fifth generation (5G) and beyond wireless networks, which demands scalable access for a large number of devices. While grant-free…

Signal Processing · Electrical Eng. & Systems 2021-02-18 Xinyu Bian , Yuyi Mao , Jun Zhang

Efficient and low-latency wireless connectivity between the base station (BS) and a sparse set of sporadically active devices from a massive number of devices is crucial for random access in emerging massive machine-type communications…

Information Theory · Computer Science 2024-04-16 Jyotish Robin , Elza Erkip

In a wireless sensor network Quality of Information (QoI), Energy Efficiency, Redundant data avoidance, congestion control are the important metrics that affect the performance of wireless sensor network. As many approaches were proposed to…

Networking and Internet Architecture · Computer Science 2013-05-22 Manju Prasad , Andhe Dharani

Internet of Things (IoT) devices have grown in popularity since they can directly interact with the real world. Home automation systems automate these interactions. IoT events are crucial to these systems' decision-making but are often…

Cryptography and Security · Computer Science 2024-07-30 Uzma Maroof , Gustavo Batista , Arash Shaghaghi , Sanjay Jha

Grant-free non-orthogonal multiple access has been regarded as a viable approach to accommodate access for a massive number of machine-type devices with small data packets. The sporadic activation of the devices creates a multiuser setup…

Signal Processing · Electrical Eng. & Systems 2023-05-15 Yanna Bai , Wei Chen , Bo Ai , Petar Popovski

Although many successful ensemble clustering approaches have been developed in recent years, there are still two limitations to most of the existing approaches. First, they mostly overlook the issue of uncertain links, which may mislead the…

Machine Learning · Statistics 2016-06-06 Dong Huang , Jian-Huang Lai , Chang-Dong Wang

To support the modern machine-type communications, a crucial task during the random access phase is device activity detection, which is to detect the active devices from a large number of potential devices based on the received signal at…

Information Theory · Computer Science 2021-12-21 Yang Li , Zhilin Chen , Yunqi Wang , Chenyang Yang , Yik-Chung Wu

Massive machine-type communications (mMTC) are fundamental to the Internet of Things (IoT) framework in future wireless networks, involving the connection of a vast number of devices with sporadic transmission patterns. Traditional device…

Signal Processing · Electrical Eng. & Systems 2025-10-22 Xinjue Wang , Esa Ollila , Sergiy A. Vorobyov

We focus on C-RAN random access protocols for IoT devices that yield low-latency high-rate active-device detection in dense networks of large-array remote radio heads. In this context, we study the problem of learning the strengths of links…

Information Theory · Computer Science 2018-01-15 Ozgun Y. Bursalioglu , Zheda Li , Chenwei Wang , Haralabos Papadopoulos

This study confronts the growing challenges of energy consumption and the depletion of energy resources, particularly in the context of smart buildings. As the demand for energy increases alongside the necessity for efficient building…

This paper investigates the issue of cooperative activity detection for grant-free random access in the sixth-generation (6G) cell-free wireless networks with sourced and unsourced paradigms. First, we propose a cooperative framework for…

Information Theory · Computer Science 2020-11-23 Xiaodan Shao , Xiaoming Chen , Derrick Wing Kwan Ng , Caijun Zhong , Zhaoyang Zhang

Minimizing energy consumption of low-power wireless nodes is a persistent challenge from the constrained Internet of Things (IoT). In this paper, we start from the observation that constrained IoT devices have largely different hardware…

Networking and Internet Architecture · Computer Science 2025-08-14 Michel Rottleuthner , Thomas C. Schmidt , Matthias Wählisch

In this work, we propose an adaptive system design for an Internet of Things (IoT) monitoring network with latency and reliability requirements, where IoT devices generate time-critical and event-triggered bursty traffic, and an unmanned…

Signal Processing · Electrical Eng. & Systems 2024-05-17 Nilupuli Senadhira , Salman Durrani , Sheeraz A. Alvi , Nan Yang , Xiangyun Zhou

Energy-efficiency is highly desirable for sensing systems in the Internet of Things (IoT). A common approach to achieve low-power systems is duty-cycling, where components in a system are turned off periodically to meet an energy budget.…

Systems and Control · Computer Science 2017-05-03 Long N. Le , Douglas L. Jones

Due to the increase of Internet-of-Things (IoT) devices, IoT networks are getting overcrowded. Networks can be extended with more gateways, increasing the number of supported devices. However, as investigated in this work, massive MIMO has…

Signal Processing · Electrical Eng. & Systems 2021-05-27 Gilles Callebaut , Sara Gunnarsson , Andrea P. Guevara , Anders J Johansson , Liesbet Van der Perre , Fredrik Tufvesson

This paper considers sparse device activity detection for cellular machine-type communications with non-orthogonal signatures using the approximate message passing algorithm. This paper compares two network architectures, massive…

Information Theory · Computer Science 2019-06-25 Zhilin Chen , Foad Sohrabi , Wei Yu

In this paper, a novel cluster-based approach for optimizing the energy efficiency of wireless small cell networks is proposed. A dynamic mechanism based on the spectral clustering technique is proposed to dynamically form clusters of small…

Networking and Internet Architecture · Computer Science 2016-05-03 Sumudu Samarakoon , Mehdi Bennis , Walid Saad , Matti Latva-aho