Relay selection in mixed RF/FSO system using DF relaying

Sharma, Nikhil; Bansal, Ankit; Garg, Parul

doi:10.1007/s11107-016-0637-0

Cited by 13 publications

(6 citation statements)

References 23 publications

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“…In this case, relay selection technique has been proposed as an efficient solution to alleviate these limitations whereby the best relays are selected for data transmission. The research work on relay selection has been studied in the work of Sharma et al where the relays employed DF protocol under different selection schemes and the RF link and FSO link are respectively subjected to generalized η − μ and Gamma‐Gamma distributions. The work was later extended to AF‐based system in the work of Sharma et al under the same channel conditions.…”

Section: Introductionmentioning

confidence: 99%

Security outage performance of partial relay selection in AF mixed RF/FSO system with outdated channel state information

Odeyemi

Owolawi

2019

Trans Emerging Tel Tech

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In this paper, the secrecy outage performance of a partial relay selection–based mixed radio frequency/free‐space optical (RF/FSO) system with outdated channel state information is studied. All the RF links are modeled in Rayleigh fading, and the FSO link is subjected to Gamma‐Gamma fading with/or without pointing errors in relation to the two detection techniques such as heterodyne detection and intensity modulation with direct detection. It is assumed that the relay nodes employ fixed gain and variable gain amplified‐and‐forward relaying protocols. Thus, unified cumulative distribution functions of the equivalent end‐to‐end signal to noise ratio for both the AF relaying schemes are then derived. Utilizing the cumulative distribution functions, the closed‐form expressions for the lower bound secrecy outage probability under the two relaying protocols are then obtained for the concerned system. Moreover, the impacts of turbulence, pointing errors, detection techniques, outdated channel state information, and relay selection are investigated. The finding demonstrated that the variable gain relaying mixed RF/FSO system offers much better secrecy performance compared with the fixed gain relaying system. Monte Carlo simulation results are provided to validate the accuracy of the analysis.

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Section: Introductionmentioning

confidence: 99%

Security outage performance of partial relay selection in AF mixed RF/FSO system with outdated channel state information

Odeyemi

Owolawi

2019

Trans Emerging Tel Tech

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“…This can be accomplished through the use of either amplified-and-forward (AF) and/or decode-and-forward (DF) relaying node(s) to transmit information between the source and destination [1]. Traditionally, RF cooperative systems suffer from vital limitations such as spectrum scarcity and limited data rate [2]. To alleviate these problems, FSO system has been proposed to be used in conjunction with the RF system because of its desirable features such as unlicensed spectrum, high security, and cheap cost of deployment [3].…”

Section: Introductionmentioning

confidence: 99%

“…To overcome these limitations, relay selection technique has been suggested in literature where the best relay is selected for data transmission [11]. In [2], the performance of a DF mixed RF/FSO system under different relay selections was investigated with RF and FSO links subjected to generalized η-μ and Gamma-Gamma distributions, respectively. The authors further extended the work to an AF-based system under the channel characterizes in [12].…”

Section: Introductionmentioning

confidence: 99%

Relay Selection in Energy Harvesting Aided Mixed Rf/Fso System With Transmit Antenna Selection Over Atmospheric Turbulence and Pointing Error

Odeyemi¹

2019

PIER C

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In this paper, the performance of relay selection in an energy harvesting aided mixed radio frequency (RF)/free space optical (FSO) system with transmit antenna selection (TAS) over atmospheric turbulence and pointing error is presented. The source of multiple antennas employs TAS to send information to the destination via multiple relay nodes. Also, the energy-limited source uses selection combining technique to harvest energy from multiple relay nodes. As a result, all the relay nodes act as a wireless power transmitting node as well as data receiving node. Moreover, it assumes that the RF/FSO links follow Rayleigh/Malaga (M) distributions with non-zero boresight (NB) pointing error on the FSO link. Therefore, the system outage probability closed-form expression is then derived which is utilized to obtain the system throughput. In addition, the results demonstrate the significant effect of atmospheric turbulence and NB pointing error on the system performance with multiple relays, and source transmit antenna offers the system better performance. The accuracy of the derived expressions is thus validated through Monte Carlo simulations.

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“…[4][5][6][7][8][9] The higher capacity and wide coverage advantages of mixed radio frequency (RF)/FSO cooperative communication systems have recently attracted the researchers. 3,[10][11][12][13][14] Different cooperative protocols such as amplify-and-forward 10,11 and decode-and-forward (DF) [13][14][15] have widely been investigated in mixed RF/FSO networks. Anees and Bhatnagar 3 investigated the error performance and the capacity analysis for the DF-based mixed RF/FSO system over Nakagami-m and GG fading channels.…”

Section: Introductionmentioning

confidence: 99%

“…Anees and Bhatnagar investigated the error performance and the capacity analysis for the DF‐based mixed RF/FSO system over Nakagami‐ m and GG fading channels. Sharma et al carried out a performance analysis of relay selection in DF‐based mixed RF/FSO system. The aforementioned authors also utilized a generalized model for RF fading as η − μ distribution and obtained the average error performance of the DF‐based RF/FSO system with GG‐distributed optical link.…”

Section: Introductionmentioning

confidence: 99%

On the performance of asymmetric SIM‐based RF/FSO system with MIMO DF relaying

Singhal

Bansal

Kumar

2018

Trans Emerging Tel Tech

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In this paper, we consider the asymmetric dual‐hop radio frequency (RF) and free‐space optical (FSO) wireless communication system with a decode‐and‐forward–based multiple‐input–multiple‐output relay over the Nakagami‐m/Generalized‐K( KG) distribution. The KG distribution is a generic statistical model, which has been used for a wide range of atmospheric turbulence–induced fading in FSO communication. The coefficients of the RF hop are considered to be independent and nonidentically distributed with the Nakagami‐m distribution, and the coefficients of FSO hop are considered to be independent and identically distributed. We also consider the path loss and misalignment error effect in FSO hop. We derive the approximate closed‐form expression of the symbol error probability and outage probability in terms of the Meijer G function for the considered mixed decode‐and‐forward RF/FSO system. The closed‐form expressions of the conditional symbol error probability and outage probability are also derived for the considered system while taking into account the effect of a misalignment error. We have also analyzed the considered system for high signal‐to‐noise ratio conditions. In addition, the diversity order of the considered system is also obtained analytically.

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Relay selection in mixed RF/FSO system using DF relaying

Cited by 13 publications

References 23 publications

Security outage performance of partial relay selection in AF mixed RF/FSO system with outdated channel state information

Security outage performance of partial relay selection in AF mixed RF/FSO system with outdated channel state information

Relay Selection in Energy Harvesting Aided Mixed Rf/Fso System With Transmit Antenna Selection Over Atmospheric Turbulence and Pointing Error

On the performance of asymmetric SIM‐based RF/FSO system with MIMO DF relaying

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