The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Kedua-dua kepelbagaian spatial dan penyampaian multihop dianggap sebagai kaedah yang berkesan untuk mengurangkan kesan pudar akibat pergolakan atmosfera ke atas prestasi sistem optik ruang bebas (FSO). Penyampaian multihop boleh mengurangkan kesan pudar dengan ketara dengan menyampaikan maklumat ke atas beberapa lompatan yang lebih pendek. Walau bagaimanapun, ia tidak boleh dilaksanakan atau menjimatkan untuk menggunakan geganti dalam banyak senario praktikal. Kepelbagaian spatial boleh mengurangkan varians yang semakin pudar dengan memperkenalkan darjah kebebasan tambahan dalam domain spatial. Namun begitu, keunggulannya berkurangan apabila sub-saluran yang pudar dikorelasikan. Dalam makalah ini, matlamat kami adalah untuk mengkaji had prestasi asas kepelbagaian ruang yang mengalami saluran pudar Gamma-Gamma (GG) yang berkorelasi dalam sistem FSO koheren multihop. Untuk analisis prestasi, kami mencadangkan untuk menganggarkan jumlah pembolehubah rawak (RV) GG berkorelasi sebagai RV GG, yang kemudiannya disahkan oleh ujian statistik kebaikan-kesesuaian Kolmogorov-Smirnov (KS). Metrik prestasi, termasuk kebarangkalian gangguan dan kapasiti ergodik, baru diperoleh dalam ungkapan bentuk tertutup dan disiasat dengan teliti. Simulasi Monte-Carlo (MC) juga dilakukan untuk mengesahkan keputusan analisis.
Phuc V. TRINH
National Institute of Information and Communications Technology
Thanh V. PHAM
University of Aizu
Anh T. PHAM
University of Aizu
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Salinan
Phuc V. TRINH, Thanh V. PHAM, Anh T. PHAM, "Free-Space Optical Systems over Correlated Atmospheric Fading Channels: Spatial Diversity or Multihop Relaying?" in IEICE TRANSACTIONS on Communications,
vol. E101-B, no. 9, pp. 2033-2046, September 2018, doi: 10.1587/transcom.2017EBP3355.
Abstract: Both spatial diversity and multihop relaying are considered to be effective methods for mitigating the impact of atmospheric turbulence-induced fading on the performance of free-space optical (FSO) systems. Multihop relaying can significantly reduce the impact of fading by relaying the information over a number of shorter hops. However, it is not feasible or economical to deploy relays in many practical scenarios. Spatial diversity could substantially reduce the fading variance by introducing additional degrees of freedom in the spatial domain. Nevertheless, its superiority is diminished when the fading sub-channels are correlated. In this paper, our aim is to study the fundamental performance limits of spatial diversity suffering from correlated Gamma-Gamma (G-G) fading channels in multihop coherent FSO systems. For the performance analysis, we propose to approximate the sum of correlated G-G random variables (RVs) as a G-G RV, which is then verified by the Kolmogorov-Smirnov (KS) goodness-of-fit statistical test. Performance metrics, including the outage probability and the ergodic capacity, are newly derived in closed-form expressions and thoroughly investigated. Monte-Carlo (M-C) simulations are also performed to validate the analytical results.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2017EBP3355/_p
Salinan
@ARTICLE{e101-b_9_2033,
author={Phuc V. TRINH, Thanh V. PHAM, Anh T. PHAM, },
journal={IEICE TRANSACTIONS on Communications},
title={Free-Space Optical Systems over Correlated Atmospheric Fading Channels: Spatial Diversity or Multihop Relaying?},
year={2018},
volume={E101-B},
number={9},
pages={2033-2046},
abstract={Both spatial diversity and multihop relaying are considered to be effective methods for mitigating the impact of atmospheric turbulence-induced fading on the performance of free-space optical (FSO) systems. Multihop relaying can significantly reduce the impact of fading by relaying the information over a number of shorter hops. However, it is not feasible or economical to deploy relays in many practical scenarios. Spatial diversity could substantially reduce the fading variance by introducing additional degrees of freedom in the spatial domain. Nevertheless, its superiority is diminished when the fading sub-channels are correlated. In this paper, our aim is to study the fundamental performance limits of spatial diversity suffering from correlated Gamma-Gamma (G-G) fading channels in multihop coherent FSO systems. For the performance analysis, we propose to approximate the sum of correlated G-G random variables (RVs) as a G-G RV, which is then verified by the Kolmogorov-Smirnov (KS) goodness-of-fit statistical test. Performance metrics, including the outage probability and the ergodic capacity, are newly derived in closed-form expressions and thoroughly investigated. Monte-Carlo (M-C) simulations are also performed to validate the analytical results.},
keywords={},
doi={10.1587/transcom.2017EBP3355},
ISSN={1745-1345},
month={September},}
Salinan
TY - JOUR
TI - Free-Space Optical Systems over Correlated Atmospheric Fading Channels: Spatial Diversity or Multihop Relaying?
T2 - IEICE TRANSACTIONS on Communications
SP - 2033
EP - 2046
AU - Phuc V. TRINH
AU - Thanh V. PHAM
AU - Anh T. PHAM
PY - 2018
DO - 10.1587/transcom.2017EBP3355
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E101-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2018
AB - Both spatial diversity and multihop relaying are considered to be effective methods for mitigating the impact of atmospheric turbulence-induced fading on the performance of free-space optical (FSO) systems. Multihop relaying can significantly reduce the impact of fading by relaying the information over a number of shorter hops. However, it is not feasible or economical to deploy relays in many practical scenarios. Spatial diversity could substantially reduce the fading variance by introducing additional degrees of freedom in the spatial domain. Nevertheless, its superiority is diminished when the fading sub-channels are correlated. In this paper, our aim is to study the fundamental performance limits of spatial diversity suffering from correlated Gamma-Gamma (G-G) fading channels in multihop coherent FSO systems. For the performance analysis, we propose to approximate the sum of correlated G-G random variables (RVs) as a G-G RV, which is then verified by the Kolmogorov-Smirnov (KS) goodness-of-fit statistical test. Performance metrics, including the outage probability and the ergodic capacity, are newly derived in closed-form expressions and thoroughly investigated. Monte-Carlo (M-C) simulations are also performed to validate the analytical results.
ER -