Enhancing Secrecy Capacity in FSO Links via MISO Systems Through Turbulence-Induced Fading Channels With Misalignment Errors
It has recently been proved that the free-space optical (FSO) communication links are susceptible to interceptions. Due to this reason, the optics community shows a special interest in studying these high-speed links in greater detail from a physical layer security (PLS) point of view. Therefore, in...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2020-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9070146/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1839644826933395456 |
|---|---|
| author | Ruben Boluda-Ruiz Sezer Can Tokgoz Antonio Garcia-Zambrana Khalid Qaraqe |
| author_facet | Ruben Boluda-Ruiz Sezer Can Tokgoz Antonio Garcia-Zambrana Khalid Qaraqe |
| author_sort | Ruben Boluda-Ruiz |
| collection | DOAJ |
| description | It has recently been proved that the free-space optical (FSO) communication links are susceptible to interceptions. Due to this reason, the optics community shows a special interest in studying these high-speed links in greater detail from a physical layer security (PLS) point of view. Therefore, in this paper, we propose, for the first time, enhancing the average secrecy capacity (ASC) in FSO links via multiple-input/single-output (MISO) systems. It is well-known that the fading effects in FSO channels can be significantly mitigated by exploiting spatial diversity techniques at the transmitter end. Thus, we develop a new asymptotic closed-form solution at high signal-to-noise-ratio (SNR) to accurately compute the ASC for MISO based FSO communication systems with equal gain combining (EGC) reception through generalized misalignment and atmospheric turbulence-induced fading channels. As a key feature, we investigate the impact of the eavesdropper's orientation along with its location in the pointing error model. We can conclude that the influence of the eavesdropper on recollecting radiated power is diminished considerably by increasing not only the normalized beam width at the receiver end, but also by increasing the number of laser sources. Numerical results are tested by exact Monte Carlo simulations. |
| format | Article |
| id | doaj-art-db1c02d0a03d489b9169dae8b0678cdd |
| institution | Matheson Library |
| issn | 1943-0655 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-db1c02d0a03d489b9169dae8b0678cdd2025-07-01T23:51:23ZengIEEEIEEE Photonics Journal1943-06552020-01-0112411310.1109/JPHOT.2020.29873789070146Enhancing Secrecy Capacity in FSO Links via MISO Systems Through Turbulence-Induced Fading Channels With Misalignment ErrorsRuben Boluda-Ruiz0https://orcid.org/0000-0002-1843-3467Sezer Can Tokgoz1https://orcid.org/0000-0002-8643-7080Antonio Garcia-Zambrana2https://orcid.org/0000-0001-5624-7932Khalid Qaraqe3Department of Electrical and Computer Engineering, Texas A&M University at Qatar, Doha, QatarDepartment of Electrical and Computer Engineering, Texas A&M University at Qatar, Doha, QatarAndalucía Tech, Department of Communications Engineering, Campus de Teatinos, University of Málaga, Málaga, SpainDepartment of Electrical and Computer Engineering, Texas A&M University at Qatar, Doha, QatarIt has recently been proved that the free-space optical (FSO) communication links are susceptible to interceptions. Due to this reason, the optics community shows a special interest in studying these high-speed links in greater detail from a physical layer security (PLS) point of view. Therefore, in this paper, we propose, for the first time, enhancing the average secrecy capacity (ASC) in FSO links via multiple-input/single-output (MISO) systems. It is well-known that the fading effects in FSO channels can be significantly mitigated by exploiting spatial diversity techniques at the transmitter end. Thus, we develop a new asymptotic closed-form solution at high signal-to-noise-ratio (SNR) to accurately compute the ASC for MISO based FSO communication systems with equal gain combining (EGC) reception through generalized misalignment and atmospheric turbulence-induced fading channels. As a key feature, we investigate the impact of the eavesdropper's orientation along with its location in the pointing error model. We can conclude that the influence of the eavesdropper on recollecting radiated power is diminished considerably by increasing not only the normalized beam width at the receiver end, but also by increasing the number of laser sources. Numerical results are tested by exact Monte Carlo simulations.https://ieeexplore.ieee.org/document/9070146/Free-space optical (FSO)physical layer security (PLS)average secrecy capacity (ASC)atmospheric turbulencemultiple-input/multiple-output (MIMO)equal gain combining (EGC) |
| spellingShingle | Ruben Boluda-Ruiz Sezer Can Tokgoz Antonio Garcia-Zambrana Khalid Qaraqe Enhancing Secrecy Capacity in FSO Links via MISO Systems Through Turbulence-Induced Fading Channels With Misalignment Errors IEEE Photonics Journal Free-space optical (FSO) physical layer security (PLS) average secrecy capacity (ASC) atmospheric turbulence multiple-input/multiple-output (MIMO) equal gain combining (EGC) |
| title | Enhancing Secrecy Capacity in FSO Links via MISO Systems Through Turbulence-Induced Fading Channels With Misalignment Errors |
| title_full | Enhancing Secrecy Capacity in FSO Links via MISO Systems Through Turbulence-Induced Fading Channels With Misalignment Errors |
| title_fullStr | Enhancing Secrecy Capacity in FSO Links via MISO Systems Through Turbulence-Induced Fading Channels With Misalignment Errors |
| title_full_unstemmed | Enhancing Secrecy Capacity in FSO Links via MISO Systems Through Turbulence-Induced Fading Channels With Misalignment Errors |
| title_short | Enhancing Secrecy Capacity in FSO Links via MISO Systems Through Turbulence-Induced Fading Channels With Misalignment Errors |
| title_sort | enhancing secrecy capacity in fso links via miso systems through turbulence induced fading channels with misalignment errors |
| topic | Free-space optical (FSO) physical layer security (PLS) average secrecy capacity (ASC) atmospheric turbulence multiple-input/multiple-output (MIMO) equal gain combining (EGC) |
| url | https://ieeexplore.ieee.org/document/9070146/ |
| work_keys_str_mv | AT rubenboludaruiz enhancingsecrecycapacityinfsolinksviamisosystemsthroughturbulenceinducedfadingchannelswithmisalignmenterrors AT sezercantokgoz enhancingsecrecycapacityinfsolinksviamisosystemsthroughturbulenceinducedfadingchannelswithmisalignmenterrors AT antoniogarciazambrana enhancingsecrecycapacityinfsolinksviamisosystemsthroughturbulenceinducedfadingchannelswithmisalignmenterrors AT khalidqaraqe enhancingsecrecycapacityinfsolinksviamisosystemsthroughturbulenceinducedfadingchannelswithmisalignmenterrors |