Blar i NTNU Open på forfatter "Li, Qihao"
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Channel-based Optimal Back-off Delay Control in Delay-Constrained Industrial WSNs
Li, Qihao; Zhang, Ning; Cheffena, Michael; Shen, Xuemin (Sherman) (Journal article; Peer reviewed, 2019)Recent developments in industrial wireless sensor networks (IWSNs) have revolutionized industrial automation systems. However, harsh industrial environment poses great challenges to a time-critical and reliable wireless ... -
Channel-based Sampling Rate and Queuing State Control in Delay-Constraint Industrial WSNs
Li, Qihao; Zhang, Kuan; Cheffena, Michael; Shen, Xuemin (Sherman) (Journal article, 2017)Industrial Wireless Sensor Networks (IWSNs) improve the transmission precision of control signaling as well as contributing to the real-time data monitoring and instrument fault diagnosing throughout the manufacturing ... -
Channel-based Sybil Detection in Industrial Wireless Sensor Networks: a Multi-kernel Approach
Li, Qihao; Zhang, Kuan; Cheffena, Michael; Shen, Xuemin (Sherman) (Journal article, 2017)Industrial Wireless Sensor Networks (IWSNs) integrate various types of sensors to measure and control industrial production. However, the unattended open environment makes IWSNs vulnerable to malicious attacks, such as ... -
Exploiting Dispersive Power Gain and Delay Spread for Sybil Detection in Industrial WSNs: A Multi-Kernel Approach
Li, Qihao; Cheffena, Michael (Journal article; Peer reviewed, 2019)Industrial wireless sensor networks (IWSNs) promote innovations in the industry such as structural status mapping, instrument fault diagnosing, and oriented automation system associating. However, due to the shared nature ... -
Power delay profile analysis and modeling of industrial indoor channels
Ai, Yun; Cheffena, Michael; Li, Qihao (Chapter, 2015)In this paper, power delay profile (PDP) measurements of three different industrial indoor environments are presented. The measurements were performed in the frequency range of 800 MHz to 2.7 GHz using a vector network ... -
Radio frequency measurements and capacity analysis for industrial indoor environments
Ai, Yun; Cheffena, Michael; Li, Qihao (Chapter, 2015)In this study, path-loss and shadowing measurement results for three different industrial indoor environments at 900, 1600, and 2450 MHz are presented. The results show that the one-slope model fits the measured path-loss ...