Max-min relay selection for legacy amplify-and-forward systems with interference

Krikidis, Ioannis; Thompson, John; McLaughlin, Stephen; Goertz, Norbert

doi:10.1109/twc.2009.080383

Cited by 242 publications

(182 citation statements)

References 31 publications

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“…Transmission performance cannot be guaranteed in a relay selection that is based on the calculation of the instantaneous SN in either the destination or the relay node because of the effect of interference from other nodes on the system performance. Krikidis in [34], considers the relay nodes to receive interference, the result of the relay selection criterion is hence changed. This work groups the network nodes into clusters.…”

Section: Interference Based Methodsmentioning

confidence: 99%

“…However, in practice, the transceiver hardware is imperfect due to phase noise, I/Q imbalance and amplifier nonlinearities.  Half versus full duplex: Most schemes consider half-duplex (HD) relays where reception and transmission occur separately, resulting in resource loss in time and/or frequency [21][22][23]. In order to alleviate this loss, buffer-aided successive schemes have been proposed where two relays are concurrently activated, one for reception and the other for transmission, thus mimicking full-duplexity but at the cost of inter-relay interference (IRI).…”

Section: Relay Selection Algorithmsmentioning

confidence: 99%

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Survey on Relay Selection Techniques in Cognitive Networks

Bouallegue

Sethom

2016

IRA-JTE

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Cognitive radio holds great promise as a research area nowadays. By increasing the spectral efficiency, it is applicable to various areas I. INTRODUCTIONSince the technology of wireless communication is quickly developing; heterogeneous wireless communication system must be adjusted in reduced frequency bandwidth. The efficiency of the conventional orthogonal spectral separation of heterogeneous system is not sufficient to sustain the unceasing growth of wireless device deploying exigency, making spectrum sharing amongst heterogeneous systems increasingly important. Two main challenges for the future of wireless systems are raised: the high data rate request of the growing number of users and the wireless spectrum availability. By reusing the underused licensed frequency bands, Cognitive Radio (CR) is presented as a new facet of telecommunication system to resolve the issue of spectrum availability. In such system, unlicensed wireless users (secondary users) are dynamically granted access to the licensed bands under the compulsion of tolerable interference to the Primary Users (PU). To facilitate the spectrum sharing among Secondary Users SUs and PUs, there are two existing techniques: The spectrum overlay and the spectrum underlay. In the first method, the SU shares some its power resources with the PU to give a relay-assisted transmission. Hence, the secondary network offsets the forced interference by the increase in the signal to interference plus noise ratio (SINR) of primary receivers. Thenceforth, the core idea of the overlay approach is to assign power and channel assets to the entire network, while using the requirements of PUs. To prevail over the spectral efficiency loss of one-way half duplex, [1] implements a two-way relaying.

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Section: Interference Based Methodsmentioning

confidence: 99%

Section: Relay Selection Algorithmsmentioning

confidence: 99%

Survey on Relay Selection Techniques in Cognitive Networks

Bouallegue

Sethom

2016

IRA-JTE

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“…에 영향을 받는 환경 [3,4] , 라이시안 페이딩(Rician fading)과 AWGN에 영향을 받는 환경 [5] , 그리고 Nakagami-m페이딩과 AWGN에 영향을 받는 환경 [6] 에 은 평균 수율의 합 관점에서 이득을 얻을 수 있음 을 보였다 [7] . 또한, 간섭-제한적인 환경에서 AF 릴 레이 시스템의 다이버시티 이득이 간섭 채널에 의 해 제한되는 것을 점근적 분석(asymptotic analysis) 을 통해 보여준 바 있다 [8] . 한편, 릴레이 채널은 AWGN의 영향을 받지만, 액세스 채널이 레일리 분 포를 갖는 다수의 간섭원들의 영향을 받는 환경에 서, AF와 복호-후-전달(decode-and-forward: DF) 릴 레이 시스템들의 불능 확률(outage probability)에 대한 분석이 이루어진 바 있다 [9] .…”

Section: ⅰ 서 론unclassified

Performance Bounds of an Amplify-and-Forward Relay System with Multiple Rayleigh-faded Co-channel Interferers

Ryu¹,

Kang²

2012

The Journal of Korea Information and Communications Society

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Key Words : Interference-limited system, amplify-and-forward relaying, outage probability, average bit error rate ABSTRACTIn this paper, we consider a 2-hop relay system where both the relay and destination nodes suffer from the arbitrary number of co-channel interferers. More specifically, assuming that the relay and access channels as well as interference channels are all subject to Rayleigh fading, we derive an exact closed-form expression for outage probability of the amplify-and-forward (AF) relay system, and furthermore compute its upper and lower bounds.Based on these bounds, we derive the upper and lower bounds on the average bit error rate (BER) of the AF relay system. We also confirm the accuracy of our derivation by investigating the performance gap between the performance bounds under consideration and simulation results.

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“…Modeling the interference from a statistical perspective, the authors of [28] consider ad hoc network scenarios with multi-user interference and analyze the behavior of the amplify-and-forward scheme. We consider instead the decodeand-forward scheme and evaluate the network efficiency in using radio resources when simultaneous transmissions can be coordinated and interference-controlled through an optimal scheduling scheme.…”

Section: Related Workmentioning

confidence: 99%

Joint routing and scheduling optimization in arbitrary ad hoc networks: Comparison of cooperative and hop-by-hop forwarding

Capone

Gualandi

Yuan³

2011

Ad Hoc Networks

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Cooperation schemes form a key aspect of infrastructure-less wireless networks that allow nodes that cannot directly communicate to exchange information through the help of intermediate nodes. The most widely adopted approach is based on hop-by-hop forwarding at the network layer along a path to destination. Cooperative relaying brings cooperation to the physical layer in order to fully exploit wireless resources. The concept exploits channel diversity by using multiple radio units to transmit the same message. The underlying fundamentals of cooperative relaying have been quite well-studied from a transmission efficiency point of view, in particular with a single pair of source and destination. Results of its performance gain in a multi-hop networking context with multiple sources and destinations are, however, less available. In this paper, we provide an optimization approach to assess the performance gain of cooperative relaying vis-a-vis conventional multi-hop forwarding under arbitrary network topology. The approach joint optimizes packet routing and transmission scheduling, and generalizes classical optimization schemes for non-cooperative networks. We provide numerical results demonstrating that the gain of cooperative relaying in networking scenarios is in general rather small and decreases when network connectivity and the number of traffic flows increase, due to interference and resource reuse limitations. In addition to quantifying the performance gain, our approach leads to a new framework for optimizing routing and scheduling in cooperative networks under a generalized Spacial Time Division Multiple Access (STDMA) scheme.Original Publication: Antonio Capone, Stefano Gualandi and Di Yuan, Joint routing and scheduling optimization in arbitrary ad hoc networks: Comparison of cooperative and hop-by-hop forwarding, 2011, Ad hoc networks, (9), 7, 1256-1269. http://dx.doi.org/10.1016/j.adhoc.2011.02.002 Copyright: Elsevier Science B. V., Amsterdam http://www.elsevier.com

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Max-min relay selection for legacy amplify-and-forward systems with interference

Cited by 242 publications

References 31 publications

Survey on Relay Selection Techniques in Cognitive Networks

Survey on Relay Selection Techniques in Cognitive Networks

Performance Bounds of an Amplify-and-Forward Relay System with Multiple Rayleigh-faded Co-channel Interferers

Joint routing and scheduling optimization in arbitrary ad hoc networks: Comparison of cooperative and hop-by-hop forwarding

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