Secure intelligent reflecting surface assisted mobile edge computing system with wireless power transfer
In this paper, we study an Intelligent Reflecting Surface (IRS) assisted Mobile Edge Computing (MEC) system under eavesdropping threats, where the IRS is used to enhance the energy signal transmission and the offloading performance between Wireless Devices (WDs) and the Access Point (AP). Specifical...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2024-12-01
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| Series: | Digital Communications and Networks |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352864823001323 |
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| author | Dawei Wang Xuanrui Li Menghan Wu Yixin He Yi Lou Yu Pang Yi Lu |
| author_facet | Dawei Wang Xuanrui Li Menghan Wu Yixin He Yi Lou Yu Pang Yi Lu |
| author_sort | Dawei Wang |
| collection | DOAJ |
| description | In this paper, we study an Intelligent Reflecting Surface (IRS) assisted Mobile Edge Computing (MEC) system under eavesdropping threats, where the IRS is used to enhance the energy signal transmission and the offloading performance between Wireless Devices (WDs) and the Access Point (AP). Specifically, in the proposed scheme, the AP first powers all WDs with the wireless power transfer through both direct and IRS-assisted links. Then, powered by the harvested energy, all WDs securely offload their computation tasks through the two links in the time division multiple access mode. To determine the local and offloading computational bits, we formulate an optimization problem to jointly design the IRS's phase shift and allocate the time slots constrained by the security and energy requirements. To cope with this non-convex optimization problem, we adopt semidefinite relaxations, singular value decomposition techniques, and Lagrange dual method. Moreover, we propose a dichotomy particle swarm algorithm based on the bisection method to process the overall optimization problem and improve the convergence speed. The numerical results illustrate that the proposed scheme can boost the performance of MEC and secure computation rates compared with other IRS-assisted MEC benchmark schemes. |
| format | Article |
| id | doaj-art-7f17430a19c1476e8a043eb87d5b3e8c |
| institution | DOAJ |
| issn | 2352-8648 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Digital Communications and Networks |
| spelling | doaj-art-7f17430a19c1476e8a043eb87d5b3e8c2025-08-20T02:51:00ZengKeAi Communications Co., Ltd.Digital Communications and Networks2352-86482024-12-011061874188010.1016/j.dcan.2023.07.007Secure intelligent reflecting surface assisted mobile edge computing system with wireless power transferDawei Wang0Xuanrui Li1Menghan Wu2Yixin He3Yi Lou4Yu Pang5Yi Lu6School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, ChinaSchool of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, ChinaSchool of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, ChinaCollege of Information Science and Engineering, Jiaxing University, Jiaxing 314001, China; Jiaxing Key Laboratory of Smart Transportations, Jiaxing University, Jiaxing 314001, China; Corresponding authors.College of Information Science and Engineering, Harbin Institute of Technology (Weihai), Weihai 264209, China; Corresponding authors.Chongqing Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology, School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China; Corresponding authors.Chongqing Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology, School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, ChinaIn this paper, we study an Intelligent Reflecting Surface (IRS) assisted Mobile Edge Computing (MEC) system under eavesdropping threats, where the IRS is used to enhance the energy signal transmission and the offloading performance between Wireless Devices (WDs) and the Access Point (AP). Specifically, in the proposed scheme, the AP first powers all WDs with the wireless power transfer through both direct and IRS-assisted links. Then, powered by the harvested energy, all WDs securely offload their computation tasks through the two links in the time division multiple access mode. To determine the local and offloading computational bits, we formulate an optimization problem to jointly design the IRS's phase shift and allocate the time slots constrained by the security and energy requirements. To cope with this non-convex optimization problem, we adopt semidefinite relaxations, singular value decomposition techniques, and Lagrange dual method. Moreover, we propose a dichotomy particle swarm algorithm based on the bisection method to process the overall optimization problem and improve the convergence speed. The numerical results illustrate that the proposed scheme can boost the performance of MEC and secure computation rates compared with other IRS-assisted MEC benchmark schemes.http://www.sciencedirect.com/science/article/pii/S2352864823001323Intelligent reflecting surfaceMobile edge computingPower transferInformation security |
| spellingShingle | Dawei Wang Xuanrui Li Menghan Wu Yixin He Yi Lou Yu Pang Yi Lu Secure intelligent reflecting surface assisted mobile edge computing system with wireless power transfer Digital Communications and Networks Intelligent reflecting surface Mobile edge computing Power transfer Information security |
| title | Secure intelligent reflecting surface assisted mobile edge computing system with wireless power transfer |
| title_full | Secure intelligent reflecting surface assisted mobile edge computing system with wireless power transfer |
| title_fullStr | Secure intelligent reflecting surface assisted mobile edge computing system with wireless power transfer |
| title_full_unstemmed | Secure intelligent reflecting surface assisted mobile edge computing system with wireless power transfer |
| title_short | Secure intelligent reflecting surface assisted mobile edge computing system with wireless power transfer |
| title_sort | secure intelligent reflecting surface assisted mobile edge computing system with wireless power transfer |
| topic | Intelligent reflecting surface Mobile edge computing Power transfer Information security |
| url | http://www.sciencedirect.com/science/article/pii/S2352864823001323 |
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