In-Band Full-Duplex Relaying: A Survey, Research Issues and Challenges

Liu, Gang; Yu, F. Richard; Ji, Hong; Leung, Victor C. M.; Li, Xi

doi:10.1109/comst.2015.2394324

Cited by 487 publications

(284 citation statements)

References 159 publications

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“…Ancak röle düğümünde geleneksel yarı-çift-yönlü (Half-Duplex, HD) iletim kullanılırsa, toplam iletim süresi artacak ve bant verimliliği azalacaktır. Hem işbirlikli sistemlerin getirdiği avantajlardan yararlanmak, hem de bant verimliliğinin azalmasını engellemek amacıyla literatürde tam-çift-yönlü (Full-Duplex, FD) iletim tekniği önerilmiştir [5][6][7][8].…”

Section: Introductionunclassified

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: Introductionunclassified

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

Koç¹,

Altunbaş²

2017

deufmd

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“…Recently, several effective SI mitigation techniques have been developed, based on combinations of antenna, analog, and digital cancellations, e.g., [48]- [50]. Such results promise the potential full-duplex (FD) relaying operation, in which a relay can receive and transmit simultaneously to enhance the relay system spectral efficiency [85]. Earlier works on FD relaying, e.g., [86]- [89] (for one-way relaying) and [90], [91] (for two-way relaying), assumed the ideal FD case with zero residual SI, which can lead to overestimation of the gains due to FD relaying over HD relaying.…”

Section: Full-duplex Relayingmentioning

confidence: 99%

Radio Resource Allocation Over Fading Channels Under Statistical Delay Constraints

Phan¹,

Le‐Ngoc²

2017

SpringerBriefs in Electrical and Computer Engineering

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Wireless data transmission suffers from the fading nature of wireless channels, where the instantaneous channel conditions and hence transmission rates randomly fluctuate over time. Consequently, data arrivals at each transmitter might not be transmitted instantly. To cope with this situation, the transmitter employs buffer to store the data temporarily for later transmission. While data buffering enables more efficient radio resource allocation to opportunistically select the favorable fading conditions for transmission, it introduces queuing delay that needs to be controlled in order to meet the end-to-end delay quality-ofservice (QoS) requirements in supporting delay-sensitive communications. In this thesis, we study and develop radio resource allocation schemes for buffer-aided communications over wireless fading channels under statistical delay constraints. Using the buffering capability as a means to exploit the fading diversity, the nodes (source and relay) perform resource allocation, and adapt their transmissions to the channel state information (CSI) in order to enhance the system throughput while maintaining the statistical delay QoS requirements in terms of upper-bounded average delay or delay-outage probability.The thesis starts by considering a source-destination communications link over a fading channel with data arriving at the source transmission buffer. In the first scenario, the source is assumed to have a maximum power constraint and an average delay constraint. We consider admission control applied on random data arrivals to the source buffer in order to avoid constraint violation, and study the joint optimal data admission control and power allocation (AC-PA) problem for throughput maximization. In the second scenario, we consider an energy-harvesting (EH) source, where random amounts of energy are harvested from renewable energy sources, and stored in a battery during the course of data transmission. In every transmission time slot, the source is constrained to use at most the amount of energy currently stored. We then explore optimal power allocation problems for such EH systems under average delay or delay-outage constraints. We formulate the problems as infinite horizon constrained Markov decision process (MDP) problems, which incorporate the random variations of the fading channel, data arrival, and EH processes. A novel solution approach based on post-decision state-value function is proposed to study the properties of the optimal solutions. We also propose online allocation algorithms when the statistical knowledge of the random processes is unknown, which is typical in real-life communications. Illustrative results demonstrate the effectiveness of the proposed algorithms over existing approaches iii under similar power and delay constraints.The thesis continues with a source-relay-destination communications link over fading channels with buffers available at both source and relay, as part of a multi-hop network. We investigate and develop optimal resource allocation schemes ...

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“…Currently, there are advanced hardware designs which can suppress the SI by about 110 dB in certain scenarios, see [2]. Because of this, FD relaying with SI is gaining considerable research interest [2], [3]. On the other hand, in the HD mode, transmission and reception take place in the same frequency band but in different time slots, or in the same time slot but in different frequency bands.…”

Section: Introductionmentioning

confidence: 99%

“…However, due to the in-band simultaneous reception and transmission, FD relays are impaired by self-interference (SI), which occurs due to leakage of energy from the transmitter-end into the receiver-end of the FD relay. Currently, there are advanced hardware designs which can suppress the SI by about 110 dB in certain scenarios, see [2]. Because of this, FD relaying with SI is gaining considerable research interest [2], [3].…”

Section: Introductionmentioning

confidence: 99%

On Buffer-Aided Relaying for the Two-Hop Full Duplex Relay Channel with Self-Interference

Razlighi

Zlatanov

2017

GLOBECOM 2017 - 2017 IEEE Global Communications Conference

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In this paper, we investigate the fading two-hop full-duplex (FD) relay channel with self-interference, which is comprised of a source, an FD relay impaired by self-interference, and a destination, where a direct source-destination link does not exist. For this channel, we propose three buffer-aided relaying schemes with adaptive reception-transmission at the FD relay for the cases when the source and the relay both perform adaptive-rate transmission with adaptive-power allocation, adaptive-rate transmission with fixed-power allocation, and fixed-rate transmission, respectively. The proposed buffer-aided relaying schemes enable the FD relay to adaptively select to either receive, transmit, or simultaneously receive and transmit in a given time slot based on the qualities of the receiving, transmitting, and self-interference channels; a degree-of-freedom unavailable without buffer-aided relaying. Our numerical results show that significant performance gains are achieved using the proposed buffer-aided relaying schemes compared to conventional FD relaying, where the FD relay is forced to always simultaneously receive and transmit, and to buffer-aided half-duplex relaying, where the half-duplex relay cannot simultaneously receive and transmit. The main implication of this work is that FD relaying systems without buffer-aided relaying miss-out on significant performance gains.

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In-Band Full-Duplex Relaying: A Survey, Research Issues and Challenges

Cited by 487 publications

References 159 publications

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

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

Radio Resource Allocation Over Fading Channels Under Statistical Delay Constraints

On Buffer-Aided Relaying for the Two-Hop Full Duplex Relay Channel with Self-Interference

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