On the performance of hybrid line of sight RF and RF-FSO fixed gain dual-hop transmission systems

Handle URI:
http://hdl.handle.net/10754/565006
Title:
On the performance of hybrid line of sight RF and RF-FSO fixed gain dual-hop transmission systems
Authors:
Zedini, Emna ( 0000-0002-1498-8457 ) ; Ansari, Imran Shafique ( 0000-0001-8461-6547 ) ; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
In this work, we carry out a unified performance analysis of a dual-branch transmission system composed of a direct radio-frequency (RF) link and a dual-hop fixed gain relay over the asymmetric links composed of both RF and unified free-space optics (FSO) under the effect of pointing errors. RF links are modeled by the Nakagami-m fading channel and the FSO link by the Gamma-Gamma fading channel subject to both types of detection techniques (i.e. heterodyne detection and intensity modulation with direct detection (IM/DD)). Selection combining (SC) and maximum ratio combining (MRC) diversity schemes are investigated. More specifically, for the SC method, we derive new unified closed-form expressions for the cumulative distribution function (CDF), the probability density function (PDF), the moment generating function (MGF), the moments, the outage probability (OP), the average bit-error rate (BER) of a variety of binary modulations, and the ergodic capacity for end-to-end signal-to-noise ratio (SNR). Additionally, using the MGF-based approach, the evaluation of the OP, the average BER, and the ergodic capacity for the MRC diversity technique can be performed based entirely on the knowledge of the MGF of the output SNR without ever having to compute its statistics (i.e. PDF and CDF). By implementing SC or MRC diversity techniques, we demonstrate a better performance of our system relative to the traditional RF path only. Also, our analysis illustrates MRC as the optimum combing method. All the analytical results are verified via computer-based Monte-Carlo simulations.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Communication Theory Lab
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2014 IEEE Global Communications Conference
Conference/Event name:
2014 IEEE Global Communications Conference, GLOBECOM 2014
Issue Date:
Dec-2014
DOI:
10.1109/GLOCOM.2014.7037121
Type:
Conference Paper
ISBN:
9781479935116
Appears in Collections:
Conference Papers; Electrical Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorZedini, Emnaen
dc.contributor.authorAnsari, Imran Shafiqueen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-04T07:27:58Zen
dc.date.available2015-08-04T07:27:58Zen
dc.date.issued2014-12en
dc.identifier.isbn9781479935116en
dc.identifier.doi10.1109/GLOCOM.2014.7037121en
dc.identifier.urihttp://hdl.handle.net/10754/565006en
dc.description.abstractIn this work, we carry out a unified performance analysis of a dual-branch transmission system composed of a direct radio-frequency (RF) link and a dual-hop fixed gain relay over the asymmetric links composed of both RF and unified free-space optics (FSO) under the effect of pointing errors. RF links are modeled by the Nakagami-m fading channel and the FSO link by the Gamma-Gamma fading channel subject to both types of detection techniques (i.e. heterodyne detection and intensity modulation with direct detection (IM/DD)). Selection combining (SC) and maximum ratio combining (MRC) diversity schemes are investigated. More specifically, for the SC method, we derive new unified closed-form expressions for the cumulative distribution function (CDF), the probability density function (PDF), the moment generating function (MGF), the moments, the outage probability (OP), the average bit-error rate (BER) of a variety of binary modulations, and the ergodic capacity for end-to-end signal-to-noise ratio (SNR). Additionally, using the MGF-based approach, the evaluation of the OP, the average BER, and the ergodic capacity for the MRC diversity technique can be performed based entirely on the knowledge of the MGF of the output SNR without ever having to compute its statistics (i.e. PDF and CDF). By implementing SC or MRC diversity techniques, we demonstrate a better performance of our system relative to the traditional RF path only. Also, our analysis illustrates MRC as the optimum combing method. All the analytical results are verified via computer-based Monte-Carlo simulations.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectAsymmetric dual-hop relay systemen
dc.subjectatmospheric turbulenceen
dc.subjectfree-space optics (FSO)en
dc.subjectmaximum ratio combining (MRC)en
dc.subjectpointing errorsen
dc.subjectselection combining (SC)en
dc.titleOn the performance of hybrid line of sight RF and RF-FSO fixed gain dual-hop transmission systemsen
dc.typeConference Paperen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journal2014 IEEE Global Communications Conferenceen
dc.conference.date8 December 2014 through 12 December 2014en
dc.conference.name2014 IEEE Global Communications Conference, GLOBECOM 2014en
kaust.authorAnsari, Imran Shafiqueen
kaust.authorAlouini, Mohamed-Slimen
kaust.authorZedini, Emnaen
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