Results 21 to 30 of about 2,333,689 (240)
Wireless Sensor Networks for Noise Measurement and Acoustic Event Recognitions in Urban Environments
Sensors, 2020 Nowadays, urban noise emerges as a distinct threat to people’s physiological and psychological health. Previous works mainly focus on the measurement and mapping of the noise by using Wireless Acoustic Sensor Networks (WASNs) and further propose some ...
Liyan Luo +5 more
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Rendezvous for Cognitive Radios [PDF]
IEEE Transactions on Mobile Computing, 2011 Cognitive radios have been touted as a solution to communicating in a Dynamic Spectrum Access environment. This paper examines how cognitive radios initially find one another among the expanse of ever-changing open spectrum, termed the rendezvous problem.
Nick C Theis +2 more
openaire +4 more sources
NOMA in Cooperative Underlay Cognitive Radio Networks Under Imperfect SIC
IEEE Access, 2020 In conventional cognitive radio (CR), the users in secondary network (SN) can only access the idle spectrum when users in primary network (PN) are absent.
D. Do, Anh-Tu Le, Byung Moo Lee
semanticscholar +1 more source
Photonics, 2023 With the rapid development of the underwater Internet of Things (IoT), the number of underwater communication nodes is rapidly increasing. The access capacity of a traditional multi-antenna communication system is limited by the number of transmitting ...
Yanlong Li +5 more
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Intelligent Reflecting Surface-Assisted Cognitive Radio System [PDF]
IEEE Transactions on Communications, 2019 Cognitive radio (CR) is an effective solution to improve the spectral efficiency (SE) of wireless communications by allowing the secondary users (SUs) to share spectrum with primary users (PUs). Meanwhile, intelligent reflecting surface (IRS), also known
Jie Yuan +4 more
semanticscholar +1 more source
Spectrum sensing in cognitive radio networks: threshold optimization and analysis
EURASIP Journal on Wireless Communications and Networking, 2020 Cognitive radio is a technology developed for the effective use of radio spectrum sources. The spectrum sensing function plays a key role in the performance of cognitive radio networks.
K. Koçkaya, I. Develi
semanticscholar +1 more source
Adaptive Diversity Algorithm Based on Block STBC for Massive MIMO Link Misalignment in UWOC Systems
Journal of Marine Science and Engineering, 2023 In the past few years, underwater wireless optical communication (UWOC) has become a promising wireless communication technology in the underwater environment.
Yanlong Li +5 more
doaj +1 more source
Target detection based on generalized Bures–Wasserstein distance
EURASIP Journal on Advances in Signal Processing, 2023 Radar target detection with fewer echo pulses in non-Gaussian clutter background is a challenging problem. In this instance, the conventional detectors using coherent accumulation are not very satisfactory.
Zhizhong Huang, Lin Zheng
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A Machine Anomalous Sound Detection Method Using the lMS Spectrogram and ES-MobileNetV3 Network
Applied Sciences, 2023 Unsupervised anomalous sound detection by machines holds significant importance within the realm of industrial automation. Currently, the task of machine-based anomalous sound detection in complex industrial settings is faced with issues such as the ...
Mei Wang +7 more
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Outage probability analysis of vehicular communication system with two-way AF cooperation
Dianzi Jishu Yingyong, 2018 In vehicular communication system, two-way cooperative communication can improve system performance. However, vehicle mobile communication will cause the two-way link correlation and thus reduce the system outage performance.
Lin Xiaoyu, Qiu Bin, Xiao Hailin
doaj +1 more source