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Future wireless networks need to support massive machine type communication (mMTC) where a massive number of devices accesses the network and massive MIMO is a promising enabling technology. Massive access schemes have been studied for…

信息论 · 计算机科学 2021-12-01 Unnikrishnan Kunnath Ganesan , Emil Björnson , Erik G. Larsson

We study a wireless-powered uplink communication system with non-orthogonal multiple access (NOMA), consisting of one base station and multiple energy harvesting users. More specifically, we focus on the individual data rate optimization…

Tailor-made for massive connectivity and sporadic access, grant-free random access has become a promising candidate access protocol for massive machine-type communications (mMTC). Compared with conventional grant-based protocols, grant-free…

信号处理 · 电气工程与系统科学 2022-10-26 Zhaoji Zhang , Qinghua Guo , Ying Li , Ming Jin , Chongwen Huang

In this work, we study the use of non-orthogonal multiple access (NOMA) and orthogonal time frequency space (OTFS) modulation in a multiple-input multiple-output (MIMO) communication network where mobile users (MUs) with different mobility…

信号处理 · 电气工程与系统科学 2024-06-28 Wafa Hedhly , Leila Musavian , Nikolaos Thomos

Non-Intrusive Load Monitoring (NILM) is a practical method to provide appliance-level electricity consumption information. Event detection, as an important part of event-based NILM methods, has a direct impact on the accuracy of the…

信号处理 · 电气工程与系统科学 2019-03-25 Mengqi Lu , Zuyi Li

Deep learning is a popular machine learning approach which has achieved a lot of progress in all traditional machine learning areas. Internet of thing (IoT) and Smart City deployments are generating large amounts of time-series sensor data…

网络与互联网体系结构 · 计算机科学 2021-04-15 Xiaofeng Xie , Di Wu , Siping Liu , Renfa Li

Massive Machine-Type Communications (mMTC) is a key service category in the current generation of wireless networks featuring an extremely high density of energy and resource-limited devices with sparse and sporadic activity patterns. In…

信息论 · 计算机科学 2023-03-14 Jyotish Robin , Elza Erkip

A novel reconfigurable intelligent surfaces (RISs)-based transmission framework is proposed for downlink non-orthogonal multiple access (NOMA) networks. We propose a quality-of-service (QoS)-based clustering scheme to improve the resource…

信号处理 · 电气工程与系统科学 2021-11-05 Yixuan Zou , Yuanwei Liu , Kaifeng Han , Xiao Liu , Kok Keong Chai

The exponential expansion of IoT and 5G-Advanced applications has enlarged the attack surface for DDoS, malware, and zero-day intrusions. We propose an intrusion detection system that fuses a convolutional neural network (CNN), a…

密码学与安全 · 计算机科学 2025-09-22 Rasil Baidar , Sasa Maric , Robert Abbas

With the arrival of 6G, the Internet of Things (IoT) traffic is becoming more and more complex and diverse. To meet the diverse service requirements of IoT devices, massive machine-type communications (mMTC) becomes a typical scenario, and…

信号处理 · 电气工程与系统科学 2025-09-19 Zhongwen Sun , Wei Chen , Yuxuan Sun , Bo Ai

To realize orthogonal frequency division multiplexing (OFDM)-based grant-free access for wideband systems under frequency-selective fading, existing device activity detection and channel estimation methods need substantial accuracy…

信息论 · 计算机科学 2025-08-12 Zhiyan Li , Ying Cui , Danny H. K. Tsang

Intrusion Detection Systems (IDSs) have played a significant role in the detection and prevention of cyber-attacks in traditional computing systems. It is not surprising that this technology is now being applied to secure Internet of Things…

网络与互联网体系结构 · 计算机科学 2024-07-23 Mohammed Jouhari , Hafsa Benaddi , Khalil Ibrahimi

In this paper, non-orthogonal multiple access (NOMA) networks assisted by multiple intelligent reflecting surfaces (IRSs) with discrete phase shifts are investigated, in which each user device (UD) is served by an IRS to improve the quality…

信号处理 · 电气工程与系统科学 2021-05-27 Yanyu Cheng , Kwok Hung Li , Yuanwei Liu , Kah Chan Teh , George K. Karagiannidis

This work provides a generalized performance analysis for the multi-user uplink-NOMA system with adaptive square quadrature amplitude modulation (QAM) over Rayleigh fading channels. Motivated by the massive IoT connections and…

信息论 · 计算机科学 2022-04-29 Hichem Semira , Ferdi Kara , Hakan Kaya , Halim Yanikomeroglu

In this paper, we consider a light fidelity (LiFi)-enabled bidirectional Internet of Things (IoT) communication system, where visible light and infrared light are used in the downlink and uplink, respectively. In order to improve the energy…

信号处理 · 电气工程与系统科学 2021-12-02 Chen Chen , Shu Fu , Xin Jian , Min Liu , Xiong Deng , Zhiguo Ding

This paper considers joint device activity detection and channel estimation in Internet of Things (IoT) networks, where a large number of IoT devices exist but merely a random subset of them become active for short-packet transmission at…

信息论 · 计算机科学 2021-05-06 Qipeng Wang , Liang Liu , Shuowen Zhang , Francis C. M. Lau

Host load prediction is the basic decision information for managing the computing resources usage on the cloud platform, its accuracy is critical for achieving the servicelevel agreement. Host load data in cloud environment is more high…

信号处理 · 电气工程与系统科学 2020-07-31 Hengheng Shen , Xuehai Hong

In 5G and future generation wireless systems, massive IoT networks with bursty traffic are expected to co-exist with cellular systems to serve several latency-critical applications. Thus, it is important for the access points to identify…

信号处理 · 电气工程与系统科学 2021-11-05 Jyotish Robin , Elza Erkip

This two-part paper considers an uplink massive device communication scenario in which a large number of devices are connected to a base-station (BS), but user traffic is sporadic so that in any given coherence interval, only a subset of…

信息论 · 计算机科学 2018-05-09 Liang Liu , Wei Yu

Intrusion Detection Systems (IDSs) have played a significant role in detecting and preventing cyber-attacks within traditional computing systems. It is not surprising that the same technology is being applied to secure Internet of Things…

密码学与安全 · 计算机科学 2024-12-17 Mohammed Jouhari , Mohsen Guizani