Beamforming and Antenna Grouping Design for the Multi-Antenna Relay with Energy Harvesting to Improve Secrecy Rate
The physical security strategy in the wireless network with a single-antenna eavesdropper is studied. The information transmits from a single-antenna source to a single-antenna destination, and an energy-limited multi-antenna relay is employed to forward information. The antennas of the relay are di...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-07-01
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| Series: | Information |
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| Online Access: | http://www.mdpi.com/2078-2489/7/3/38 |
| _version_ | 1831730825973989376 |
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| author | Weijia Lei Meihui Zhan |
| author_facet | Weijia Lei Meihui Zhan |
| author_sort | Weijia Lei |
| collection | DOAJ |
| description | The physical security strategy in the wireless network with a single-antenna eavesdropper is studied. The information transmits from a single-antenna source to a single-antenna destination, and an energy-limited multi-antenna relay is employed to forward information. The antennas of the relay are divided into two groups. One group receives and forwards information, and the other converts the received signal into energy. Beamforming is used by the relay to prevent the eavesdropper from intercepting confidential information. For the purpose of maximizing the secrecy rate, antenna grouping and beamforming vectors are designed. A low complexity scheme of antenna grouping is presented. The simulation results show that the secrecy rate can be significantly improved by arranging part of the antennas for energy harvesting, and part for forwarding and optimizing the beamforming vector at the relay. The antenna grouping scheme significantly reduces the computational complexity at the cost of acceptable performance loss. |
| first_indexed | 2024-12-21T09:53:38Z |
| format | Article |
| id | doaj.art-5e07cbfbfa494da1814c2db3dea429e7 |
| institution | Directory Open Access Journal |
| issn | 2078-2489 |
| language | English |
| last_indexed | 2024-12-21T09:53:38Z |
| publishDate | 2016-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Information |
| spelling | doaj.art-5e07cbfbfa494da1814c2db3dea429e72022-12-21T19:08:08ZengMDPI AGInformation2078-24892016-07-01733810.3390/info7030038info7030038Beamforming and Antenna Grouping Design for the Multi-Antenna Relay with Energy Harvesting to Improve Secrecy RateWeijia Lei0Meihui Zhan1Chongqing Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, ChinaChongqing Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, ChinaThe physical security strategy in the wireless network with a single-antenna eavesdropper is studied. The information transmits from a single-antenna source to a single-antenna destination, and an energy-limited multi-antenna relay is employed to forward information. The antennas of the relay are divided into two groups. One group receives and forwards information, and the other converts the received signal into energy. Beamforming is used by the relay to prevent the eavesdropper from intercepting confidential information. For the purpose of maximizing the secrecy rate, antenna grouping and beamforming vectors are designed. A low complexity scheme of antenna grouping is presented. The simulation results show that the secrecy rate can be significantly improved by arranging part of the antennas for energy harvesting, and part for forwarding and optimizing the beamforming vector at the relay. The antenna grouping scheme significantly reduces the computational complexity at the cost of acceptable performance loss.http://www.mdpi.com/2078-2489/7/3/38physical layer securityenergy harvestingmulti-antenna relaybeamformingantenna groupingsecrecy rate |
| spellingShingle | Weijia Lei Meihui Zhan Beamforming and Antenna Grouping Design for the Multi-Antenna Relay with Energy Harvesting to Improve Secrecy Rate Information physical layer security energy harvesting multi-antenna relay beamforming antenna grouping secrecy rate |
| title | Beamforming and Antenna Grouping Design for the Multi-Antenna Relay with Energy Harvesting to Improve Secrecy Rate |
| title_full | Beamforming and Antenna Grouping Design for the Multi-Antenna Relay with Energy Harvesting to Improve Secrecy Rate |
| title_fullStr | Beamforming and Antenna Grouping Design for the Multi-Antenna Relay with Energy Harvesting to Improve Secrecy Rate |
| title_full_unstemmed | Beamforming and Antenna Grouping Design for the Multi-Antenna Relay with Energy Harvesting to Improve Secrecy Rate |
| title_short | Beamforming and Antenna Grouping Design for the Multi-Antenna Relay with Energy Harvesting to Improve Secrecy Rate |
| title_sort | beamforming and antenna grouping design for the multi antenna relay with energy harvesting to improve secrecy rate |
| topic | physical layer security energy harvesting multi-antenna relay beamforming antenna grouping secrecy rate |
| url | http://www.mdpi.com/2078-2489/7/3/38 |
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