Performance Analysis of the Asymmetric Dual-Hop Relay Transmission With Mixed RF/FSO Links

Lee, Eun‐Ju; Park, Jaedon; Han, Dongsoo; Yoon, Giwan

doi:10.1109/lpt.2011.2166063

Cited by 306 publications

(232 citation statements)

References 12 publications

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“…Recently, RF and FSO technologies have been deployed together in the so-called mixed RF/FSO systems in an attempt to improve the reliability of FSO links and to fill out the connectivity gap between the RF access network and the backbone network. A lot of efforts have been made to study the end-to-end performance of dualhop RF/FSO systems under both heterodyne detection and intensity modulation with direct detection (IM/DD) employing DF or AF relaying [12]- [24]. Dual-hop FSO/RF systems where the FSO link and the RF link respectively experience Gamma-Gamma with pointing errors and Nakagami-m fading under heterodyne detection have been only considered in [25].…”

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confidence: 99%

On the Performance Analysis of Dual-Hop Mixed FSO/RF Systems

Zedini

Soury

Alouini

2016

IEEE Trans. Wireless Commun.

186

119

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confidence: 99%

On the Performance Analysis of Dual-Hop Mixed FSO/RF Systems

Zedini

Soury

Alouini

2016

IEEE Trans. Wireless Commun.

186

119

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“…Lee et al 7 were the first to propose and investigate an asymmetric RF-FSO link. They considered a dual-hop relay system and analyzed the end-to-end outage probability of the system by modeling the RF channel with Rayleigh distribution and an FSO link with gamma-gamma fading (GG).…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of a variable‐gain amplify‐and‐forward relayed mixed RF‐FSO system

Khanna

Aggarwal

Ahuja

2017

Int J Communication

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SummaryIn this work, an amplify-and-forward variable-gain relayed mixed RF-FSO system is studied. The considered dual-hop system consists of a radio frequency (RF) link followed by a free space optical (FSO) channel. The RF link is affected by short-term multipath fading and long-term shadowing effects and is assumed to follow the generalized-K fading distribution that approximates accurately several important distributions often used to model communication channels.The FSO channel experiences fading caused by atmospheric turbulence that is modeled by the gamma-gamma distribution characterizing moderate and strong turbulence conditions. The FSO channel also suffers path loss and pointing error induced misalignment fading. The performance of the considered system is analyzed under the collective influence of distribution shaping parameters, pointing errors that result in misalignment fading, atmospheric turbulence, and path loss. The moment-generating function of the Signal power to noise power ratio measured end-to-end for this system is derived. The cumulative distribution function for the Signal power to noise power ratio present between the source and destination receiver is also evaluated. Further, we investigate the error and outage performance and the average channel capacity for this system. The analytical expressions in closed form for the outage probability, symbol and bit error rate considering different modulation schemes and channel capacity are also derived. The mathematical expressions obtained are also demonstrated by numerical plots. KEYWORDSchannel capacity, fading, free space optical communication, probability of outage, radio frequency communication, symbol error rate

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“…First in [15] and then in [16], an analytical investigation of such topologies was conducted, when RF and FSO links are used for the first hop (source-torelay) and the second hop (relay-to-destination), respectively. It should be clarified that mixed RF/FSO systems refer to the case when RF transmission is used at one hop and FSO transmission at the other (i.e., different paths).…”

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confidence: 99%

“…On the other hand, hybrid RF/FSO systems describe the potential of parallel RF and FSO transmissions for the same path, (e.g., see [17]- [19]). However, [15] and [16] are limited to amplify-andforward (AF) relayed transmission, and, most importantly, assumed single-user communication scenarios. To the best of our knowledge, a corresponding performance analysis of DF relaying for the practical multiuser case, lacks from the open literature so far.…”

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confidence: 99%

“…The motivations behind such a system configuration are now outlined: (a) the concept of high-speed FSO links represents a fundamental motivation of the current work, since several RF streams can be multiplexed into a single FSO link [15]; (b) the aggregation of a maximum number of RF messages into a single FSO link can reach the maximum transmission capacity, thus it is a faster option as compared with the traditional RF/RF communication [16]; (c) interstream interference avoidance at the second hop relies on the point-to-point transmission over the relay-to-destination link, which, above all, represents a cost-efficient solution [16]; (d) since multiple streams are multiplexed into a single FSO link at the second hop, they can be efficiently transmitted in a number of consecutive timeslots, proportional to the number of streams. On the other hand, simultaneous RF transmissions at the first hop are established to reduce the end-to-end communication delay.…”

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confidence: 99%

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Multiuser Relaying over Mixed RF/FSO Links

Miridakis

Matthaiou

Karagiannidis

2014

IEEE Trans. Commun.

145

107

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Abstract-A multiuser dual-hop relaying system over mixed radio frequency/free-space optical (RF/FSO) links is investigated. Specifically, the system consists of m single-antenna sources, a relay node equipped with n ≥ m receive antennas and a single photo-aperture transmitter, and one destination equipped with a single photo-detector. RF links are used for the simultaneous data transmission from multiple sources to the relay. The relay operates under the decode-and-forward protocol and utilizes the popular V-BLAST technique by successively decoding each user's transmitted stream. Two common norm-based orderings are adopted, i.e., the streams are decoded in an ascending or a descending order. After V-BLAST, the relay retransmits the decoded information to the destination via a point-to-point FSO link in m consecutive timeslots. Analytical expressions for the end-to-end outage probability and average symbol error probability of each user are derived, while closed-form asymptotic expressions are also presented. Capitalizing on the derived results, some engineering insights are manifested, such as the coding and diversity gain of each user, the impact of the pointing error displacement on the FSO link and the V-BLAST ordering effectiveness at the relay.Index Terms-Decode-and-forward (DF), dual-hop communication, mixed RF/FSO systems, ordered successive interference cancellation (SIC), V-BLAST reception.

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Performance Analysis of the Asymmetric Dual-Hop Relay Transmission With Mixed RF/FSO Links

Cited by 306 publications

References 12 publications

On the Performance Analysis of Dual-Hop Mixed FSO/RF Systems

On the Performance Analysis of Dual-Hop Mixed FSO/RF Systems

Performance analysis of a variable‐gain amplify‐and‐forward relayed mixed RF‐FSO system

Multiuser Relaying over Mixed RF/FSO Links

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