Cooperative Networks with Amplify-and-Forward Multiple-Full-Duplex Relays

Han, Jae-Shin; Baek, Jong-Seob; Jeon, Sungho; Seo, Jong-Soo

doi:10.1109/twc.2014.030314.131068

Cited by 33 publications

(39 citation statements)

References 29 publications

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“…Ayrıca artık LI bileşeninin sabit olarak modellendiği bu çalışmada, önerilen karma tekniğin iletim güç adaptasyonu ile birleştirilmesi ile performansın daha da artacağı gösterilmiştir. Ayrıca literatürde çok röleli FD-AF sistemlerin analizleri de bulunmaktadır [15][16][17].…”

Section: İlgili çAlışmalarunclassified

“…Tüm röle düğümlerinin kaynak ve hedef arasındaki iletişime yardım ettiğinin düşünüldüğü [15]'te geliştirilen yinelemeli ardışık girişim giderimi ile hedefe gelen gecikmeli işaretlerin giderimi yapılmış olup, böylece tam çeşitleme derecesi elde edilmiştir. [16]'da ise sistemde bulunan röleler arasından bir röle, farklı seçim kriterlerine göre seçilmektedir.…”

Section: İlgili çAlışmalarunclassified

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Tam-Çift-Yönlü AF Röle Seçim Sistemlerinin Nakagami-m Kanallardaki Performansı

Koç¹,

Altunbaş²

2017

deufmd

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Anahtar KelimelerTam-çift-yönlü aktarım, Röle seçimi, İşbirlikli ağlar, Kuvvetlendir-veaktar, Kesinti olasılığı, Nakagami-m Özet: Bu çalışmada tam-çift-yönlü kuvvetlendir-ve-aktar tekniğini kullanan röle seçimli işbirlikli iletişim sistemlerin, artık öz-girişimin varlığı altında, Nakagami-m kanallardaki kesinti performansı incelenmiştir. Önerilen sistemde, tam-çift-yönlü aktarımın başarımını geliştirmek için beş farklı röle seçim kriteri kullanılmaktadır. Tüm röle seçim kriterleri için birikimli dağılım fonksiyonu yaklaşımı kullanılarak, tam kesinti olasılığı tek katlı integral biçiminde bulunmuştur. Elde edilen analitik sonuçlar, Monte-Carlo benzetimleri ile doğrulanmıştır. Nümerik sonuçlar ile kesinti performansını en çok geliştiren röle seçim kriterinin -tüm kanal durum bilgilerine ihtiyaç duyan-en iyi röle seçim kriteri olduğu gösterilmiştir. Buna ek olarak, yine tüm röle seçim kriterleri için, kesinti olasılığının kapalı formda alt sınır ve asimptotik ifadeleri elde edilmiştir. Röle düğümünden kaynaklanan artık öz-girişimin sistemin performansını kısıtladığı ve hata sınırlarının oluştuğu gözlemlenmiş olup, hata sınırlarının elde edilen asimptotik ifadeler ile kolayca belirlenebileceği gösterilmiştir. Performance of Full-Duplex AF Relay Selection Systems overNakagami-m Channels

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Section: İlgili çAlışmalarunclassified

Tam-Çift-Yönlü AF Röle Seçim Sistemlerinin Nakagami-m Kanallardaki Performansı

Koç¹,

Altunbaş²

2017

deufmd

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“…The received signals during Time-slot 2 of Protocol I are same as (6). On the other hands, Protocol I provides additional information in every Time-slot 1.…”

Section: Transmission Procedures With Protocol Imentioning

confidence: 99%

“…Unfortunately, however, employing a large number of antennas has been considered as an impractical direction for small mobile terminals due to its limited physical hardware size. Thus, the distributed diversity (or relay-assisted diversity) topology has aroused great interests for an alternative solution to overcome such shortcomings [6,7]. The diversity gain is organizationally obtained by joint processing using received signals from the distributed relays and transmitter.…”

Section: Introductionmentioning

confidence: 99%

Distributed Differential Quasi-Orthogonal Space-Time Block Coded System for Multiple-Relay Networks

Han

Jeon³

et al. 2015

Wireless Pers Commun

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In this paper, we present an efficient distributed differential quasi-orthogonal space-time block code (DD-QOSTBC) system for multiple relay networks. First, we propose the DD-QOSTBC transmission which considers two robust STBC-like subsystems in amplify-and-forward multiple relaying over flat fading channel. It is assumed that source has two antennas, and relays and destination have a single antenna. With robust STBC-like subsystem structure, we show that our robust subsystems can be used for an efficient joint suboptimal differential decoding based on a maximum likelihood criterion. Finally, we accomplish the performance evaluation on the proposed DD-QOSTBC system in terms of bit-error-rate.

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“…To put it into practice, a cooperative communication scheme was then proposed in time [1], and it had been widely used and rapidly developed. In cooperative communications, the diversity gain was obtained, when the relay node forwarded messages and the destination node combined the received signals from both the source and relay nodes.…”

Section: Introductionmentioning

confidence: 99%

Optimized Power Allocation and Relay Location Selection in Cooperative Relay Networks

Bao

Liu

et al. 2017

Wireless Communications and Mobile Computing

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An incremental selection hybrid decode-amplify forward (ISHDAF) scheme for the two-hop single relay systems and a relay selection strategy based on the hybrid decode-amplify-and-forward (HDAF) scheme for the multirelay systems are proposed along with an optimized power allocation for the Internet of Thing (IoT). Given total power as the constraint and outage probability as an objective function, the proposed scheme possesses good power efficiency better than the equal power allocation. By the ISHDAF scheme and HDAF relay selection strategy, an optimized power allocation for both the source and relay nodes is obtained, as well as an effective reduction of outage probability. In addition, the optimal relay location for maximizing the gain of the proposed algorithm is also investigated and designed. Simulation results show that, in both single relay and multirelay selection systems, some outage probability gains by the proposed scheme can be obtained. In the comparison of the optimized power allocation scheme with the equal power allocation one, nearly 0.1695 gains are obtained in the ISHDAF single relay network at a total power of 2 dB, and about 0.083 gains are obtained in the HDAF relay selection system with 2 relays at a total power of 2 dB.

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Cooperative Networks with Amplify-and-Forward Multiple-Full-Duplex Relays

Cited by 33 publications

References 29 publications

Tam-Çift-Yönlü AF Röle Seçim Sistemlerinin Nakagami-m Kanallardaki Performansı

Tam-Çift-Yönlü AF Röle Seçim Sistemlerinin Nakagami-m Kanallardaki Performansı

Distributed Differential Quasi-Orthogonal Space-Time Block Coded System for Multiple-Relay Networks

Optimized Power Allocation and Relay Location Selection in Cooperative Relay Networks

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