On Security and Throughput for Energy Harvesting Untrusted Relays in IoT Systems Using NOMA
In this paper, we analyze the secrecy and throughput of multiple-input single-output (MISO) energy harvesting (EH) Internet of Things (IoT) systems, in which a multi-antenna base station (BS) transmits signals to IoT devices (IoTDs) with the help of relays. Specifically, the communication process is...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2019-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8865010/ |
| _version_ | 1818911296558465024 |
|---|---|
| author | Van Nhan Vo Chakchai So-In Hung Tran Duc-Dung Tran Sovannarith Heng Phet Aimtongkham Anh-Nhat Nguyen |
| author_facet | Van Nhan Vo Chakchai So-In Hung Tran Duc-Dung Tran Sovannarith Heng Phet Aimtongkham Anh-Nhat Nguyen |
| author_sort | Van Nhan Vo |
| collection | DOAJ |
| description | In this paper, we analyze the secrecy and throughput of multiple-input single-output (MISO) energy harvesting (EH) Internet of Things (IoT) systems, in which a multi-antenna base station (BS) transmits signals to IoT devices (IoTDs) with the help of relays. Specifically, the communication process is separated into two phases. In the first phase, the BS applies transmit antenna selection (TAS) to broadcast the signal to the relays and IoTDs by using non-orthogonal multiple access (NOMA). Here, the relays use power-splitting-based relaying (PSR) for EH and information processing. In the second phase, the selected relay employs the amplify-and-forward (AF) technique to forward the received signal to the IoTDs using NOMA. The information transmitted from the BS to the IoTD risks leakage by the relay, which is able to act as an eavesdropper (EAV) (i.e., an untrusted relay). To analyze the secrecy performance, we investigate three schemes: random-BS-best-relay (RBBR), best-BS-random-relay (BBRR), and best-BS-best-relay (BBBR). The physical layer secrecy (PLS) performance is characterized by deriving closed-form expressions of secrecy outage probability (SOP) for the IoTDs. A BS transmit power optimization algorithm is also proposed to achieve the best secrecy performance. Based on this, we then evaluate the system performance of the considered system, i.e., the outage probability and throughput. In addition, the impacts of the EH time, the power-splitting ratio, the numbers of BS antennas, and the numbers of untrusted relays on the SOP and throughput are investigated. The Monte Carlo approach is applied to verify our analytical results. Finally, the numerical examples indicate that the system performance of BBBR is greater than that of RBBR and BBRR. |
| first_indexed | 2024-12-19T22:56:27Z |
| format | Article |
| id | doaj.art-00168b5560944d6d8a45c0fb17c5b418 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T22:56:27Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-00168b5560944d6d8a45c0fb17c5b4182022-12-21T20:02:37ZengIEEEIEEE Access2169-35362019-01-01714934114935410.1109/ACCESS.2019.29466008865010On Security and Throughput for Energy Harvesting Untrusted Relays in IoT Systems Using NOMAVan Nhan Vo0https://orcid.org/0000-0003-0753-5203Chakchai So-In1https://orcid.org/0000-0003-1026-191XHung Tran2https://orcid.org/0000-0002-0231-1211Duc-Dung Tran3Sovannarith Heng4Phet Aimtongkham5Anh-Nhat Nguyen6International School, Duy Tan University, Da Nang, VietnamDepartment of Computer Science, Applied Network Technology (ANT) Laboratory, Faculty of Science, Khon Kaen University, Khon Kaen, ThailandSchool of Innovation, Design and Engineering, Mälardalen University, Västerås, SwedenFaculty of Electrical and Electronics Engineering, Duy Tan University, Da Nang, VietnamDepartment of Computer Science, Applied Network Technology (ANT) Laboratory, Faculty of Science, Khon Kaen University, Khon Kaen, ThailandDepartment of Computer Science, Applied Network Technology (ANT) Laboratory, Faculty of Science, Khon Kaen University, Khon Kaen, ThailandDepartment of Computer Science, Applied Network Technology (ANT) Laboratory, Faculty of Science, Khon Kaen University, Khon Kaen, ThailandIn this paper, we analyze the secrecy and throughput of multiple-input single-output (MISO) energy harvesting (EH) Internet of Things (IoT) systems, in which a multi-antenna base station (BS) transmits signals to IoT devices (IoTDs) with the help of relays. Specifically, the communication process is separated into two phases. In the first phase, the BS applies transmit antenna selection (TAS) to broadcast the signal to the relays and IoTDs by using non-orthogonal multiple access (NOMA). Here, the relays use power-splitting-based relaying (PSR) for EH and information processing. In the second phase, the selected relay employs the amplify-and-forward (AF) technique to forward the received signal to the IoTDs using NOMA. The information transmitted from the BS to the IoTD risks leakage by the relay, which is able to act as an eavesdropper (EAV) (i.e., an untrusted relay). To analyze the secrecy performance, we investigate three schemes: random-BS-best-relay (RBBR), best-BS-random-relay (BBRR), and best-BS-best-relay (BBBR). The physical layer secrecy (PLS) performance is characterized by deriving closed-form expressions of secrecy outage probability (SOP) for the IoTDs. A BS transmit power optimization algorithm is also proposed to achieve the best secrecy performance. Based on this, we then evaluate the system performance of the considered system, i.e., the outage probability and throughput. In addition, the impacts of the EH time, the power-splitting ratio, the numbers of BS antennas, and the numbers of untrusted relays on the SOP and throughput are investigated. The Monte Carlo approach is applied to verify our analytical results. Finally, the numerical examples indicate that the system performance of BBBR is greater than that of RBBR and BBRR.https://ieeexplore.ieee.org/document/8865010/Energy harvestingInternet of Thingsphysical layer secrecythroughputNOMAMISO |
| spellingShingle | Van Nhan Vo Chakchai So-In Hung Tran Duc-Dung Tran Sovannarith Heng Phet Aimtongkham Anh-Nhat Nguyen On Security and Throughput for Energy Harvesting Untrusted Relays in IoT Systems Using NOMA IEEE Access Energy harvesting Internet of Things physical layer secrecy throughput NOMA MISO |
| title | On Security and Throughput for Energy Harvesting Untrusted Relays in IoT Systems Using NOMA |
| title_full | On Security and Throughput for Energy Harvesting Untrusted Relays in IoT Systems Using NOMA |
| title_fullStr | On Security and Throughput for Energy Harvesting Untrusted Relays in IoT Systems Using NOMA |
| title_full_unstemmed | On Security and Throughput for Energy Harvesting Untrusted Relays in IoT Systems Using NOMA |
| title_short | On Security and Throughput for Energy Harvesting Untrusted Relays in IoT Systems Using NOMA |
| title_sort | on security and throughput for energy harvesting untrusted relays in iot systems using noma |
| topic | Energy harvesting Internet of Things physical layer secrecy throughput NOMA MISO |
| url | https://ieeexplore.ieee.org/document/8865010/ |
| work_keys_str_mv | AT vannhanvo onsecurityandthroughputforenergyharvestinguntrustedrelaysiniotsystemsusingnoma AT chakchaisoin onsecurityandthroughputforenergyharvestinguntrustedrelaysiniotsystemsusingnoma AT hungtran onsecurityandthroughputforenergyharvestinguntrustedrelaysiniotsystemsusingnoma AT ducdungtran onsecurityandthroughputforenergyharvestinguntrustedrelaysiniotsystemsusingnoma AT sovannarithheng onsecurityandthroughputforenergyharvestinguntrustedrelaysiniotsystemsusingnoma AT phetaimtongkham onsecurityandthroughputforenergyharvestinguntrustedrelaysiniotsystemsusingnoma AT anhnhatnguyen onsecurityandthroughputforenergyharvestinguntrustedrelaysiniotsystemsusingnoma |