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
공간 다양성과 다중 홉 중계는 모두 대기 난류로 인한 페이딩이 자유 공간 광학(FSO) 시스템의 성능에 미치는 영향을 완화하는 효과적인 방법으로 간주됩니다. 멀티홉 중계는 여러 개의 짧은 홉을 통해 정보를 중계함으로써 페이딩의 영향을 크게 줄일 수 있습니다. 그러나 많은 실제 시나리오에서 릴레이를 배포하는 것은 실현 가능하지 않거나 경제적이지 않습니다. 공간적 다양성은 공간 영역에 추가적인 자유도를 도입함으로써 페이딩 변화를 실질적으로 줄일 수 있습니다. 그럼에도 불구하고, 페이딩 하위 채널이 상관될 때 그 우월성은 감소됩니다. 본 논문에서 우리의 목표는 다중 홉 일관성 FSO 시스템에서 상관 감마-감마(GG) 페이딩 채널로 인해 고통받는 공간 다양성의 근본적인 성능 한계를 연구하는 것입니다. 성능 분석을 위해 상관된 GG 무작위 변수(RV)의 합을 GG RV로 근사화하는 것을 제안하며, 이는 Kolmogorov-Smirnov(KS) 적합도 통계 테스트를 통해 검증됩니다. 정전 확률, 에르고딕 용량 등의 성능 지표를 폐쇄형 표현으로 새롭게 도출하고 철저하게 조사했습니다. 분석 결과를 검증하기 위해 MC(Monte-Carlo) 시뮬레이션도 수행됩니다.
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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부
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
부
@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},}
부
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 -