Secrecy Rate Maximizing Beamforming Schemes for the DF Relay Wiretap Channels
We consider beamforming schemes for the multi-antenna decode-and-forward (DF) relays that maximize the secrecy rate (SR) in the relay wiretap channel. Both full-duplex (FD) and half-duplex (HD) relays are considered, where the FD relay fights the loop-back self-interference while maximizing the SR....
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8554293/ |
| _version_ | 1818618011479703552 |
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| author | Duckdong Hwang Janghoon Yang Eunchul Yoon Hyoung-Kyu Song Sung Sik Nam |
| author_facet | Duckdong Hwang Janghoon Yang Eunchul Yoon Hyoung-Kyu Song Sung Sik Nam |
| author_sort | Duckdong Hwang |
| collection | DOAJ |
| description | We consider beamforming schemes for the multi-antenna decode-and-forward (DF) relays that maximize the secrecy rate (SR) in the relay wiretap channel. Both full-duplex (FD) and half-duplex (HD) relays are considered, where the FD relay fights the loop-back self-interference while maximizing the SR. The HD relay beamforming is derived from the FD case as a byproduct. The facts that, the weaker link among the two hops in the DF relay network dominates, the throughput and the first hop is shared among the destination and the eavesdroppers make us divide the beamformer solution space into three separate regions. Since only two of the three regions effectively produce non-negative SR, separate beamformer designs for these two effective regions are provided. Numerical results reveal performance trade off of FD and HD modes in various channel configurations, where the two challenges of self-interference suppression and the protection from eavesdropping ask different requirements for the beamforming. |
| first_indexed | 2024-12-16T17:14:48Z |
| format | Article |
| id | doaj.art-2d1bdb9e23f540d798778126f6a8bc7e |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T17:14:48Z |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-2d1bdb9e23f540d798778126f6a8bc7e2022-12-21T22:23:19ZengIEEEIEEE Access2169-35362018-01-016778417784810.1109/ACCESS.2018.28842028554293Secrecy Rate Maximizing Beamforming Schemes for the DF Relay Wiretap ChannelsDuckdong Hwang0https://orcid.org/0000-0002-4468-514XJanghoon Yang1https://orcid.org/0000-0002-4073-6747Eunchul Yoon2Hyoung-Kyu Song3https://orcid.org/0000-0002-3274-4982Sung Sik Nam4https://orcid.org/0000-0001-9259-4931Department of Electronics and Information, Communication Engineering, Sejong University, Seoul, South KoreaDepartment of New Media, Seoul Media Institute of Technology, Seoul, South KoreaDepartment of Electronics Engineering, Konkuk University, Seoul, South KoreaDepartment of Electronics and Information, Communication Engineering, Sejong University, Seoul, South KoreaDepartment of Electronic Engineering, Korea University, Seoul, South KoreaWe consider beamforming schemes for the multi-antenna decode-and-forward (DF) relays that maximize the secrecy rate (SR) in the relay wiretap channel. Both full-duplex (FD) and half-duplex (HD) relays are considered, where the FD relay fights the loop-back self-interference while maximizing the SR. The HD relay beamforming is derived from the FD case as a byproduct. The facts that, the weaker link among the two hops in the DF relay network dominates, the throughput and the first hop is shared among the destination and the eavesdroppers make us divide the beamformer solution space into three separate regions. Since only two of the three regions effectively produce non-negative SR, separate beamformer designs for these two effective regions are provided. Numerical results reveal performance trade off of FD and HD modes in various channel configurations, where the two challenges of self-interference suppression and the protection from eavesdropping ask different requirements for the beamforming.https://ieeexplore.ieee.org/document/8554293/Secrecy raterelay wiretap channeldecode and forwardbeamformer design |
| spellingShingle | Duckdong Hwang Janghoon Yang Eunchul Yoon Hyoung-Kyu Song Sung Sik Nam Secrecy Rate Maximizing Beamforming Schemes for the DF Relay Wiretap Channels IEEE Access Secrecy rate relay wiretap channel decode and forward beamformer design |
| title | Secrecy Rate Maximizing Beamforming Schemes for the DF Relay Wiretap Channels |
| title_full | Secrecy Rate Maximizing Beamforming Schemes for the DF Relay Wiretap Channels |
| title_fullStr | Secrecy Rate Maximizing Beamforming Schemes for the DF Relay Wiretap Channels |
| title_full_unstemmed | Secrecy Rate Maximizing Beamforming Schemes for the DF Relay Wiretap Channels |
| title_short | Secrecy Rate Maximizing Beamforming Schemes for the DF Relay Wiretap Channels |
| title_sort | secrecy rate maximizing beamforming schemes for the df relay wiretap channels |
| topic | Secrecy rate relay wiretap channel decode and forward beamformer design |
| url | https://ieeexplore.ieee.org/document/8554293/ |
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