Performance of interference-limited dual-hop non-regenerative relays over Rayleigh fading channels

Cvetković, Dragoš; Djordjević, Goran T.; Stefanović, Mihajlo

doi:10.1049/iet-com.2010.0019

Cited by 25 publications

(24 citation statements)

References 11 publications

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“…A consequence of upper bound (9) in the context of a cellular downlink is that the information rate of the signal transmitted by the BS to the relay must correspond to the one that maps to the minimum of γ 1 and γ 2 . When the relay-UE distance is small and the other relays are located relatively afar, it turns out that the BS-relay link (and therefore γ 1 ) will be the bottleneck, as the parameter γ 2 will be large.…”

Section: A Bler Performance and Application In A Cellular Networkmentioning

confidence: 99%

A Two-Hop AF Relaying Scheme With Interference Suppression at the Relay

Ramamurthi

2014

IEEE Trans. Veh. Technol.

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We consider a system with a source, relay and destination with arbitrary number of co-channel interferers and thermal noise at both the relay and the destination. The relay is equipped with multiple antennas, while the destination has a single antenna with limited interference-mitigation capabilities. For such a system, we propose a two-hop, Amplify-and-Forward relaying scheme, where the relay performs optimum combining (OC) to maximize the signal-to-interference-plus-noise ratio (SINR) and forwards the soft symbols to the destination. We derive the cumulative distribution function (CDF) of an upper bound on the end-to-end (e2e) SINR achievable with such a relay in Rayleigh-fading channels. The achievable diversity and outage probability performance are analyzed using the bound and simulations. Block-error-rate performance at the destination is studied and a practical application in cellular networks discussed. The results show that the proposed relay can assist a destination with a single antenna, which was experiencing lower SINR in the absence of the relay, to achieve higher values of SINR.Index Terms-Relays, half-duplex, optimum combining, interference mitigation, estimate-amplify-and-forward.

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Section: A Bler Performance and Application In A Cellular Networkmentioning

confidence: 99%

A Two-Hop AF Relaying Scheme With Interference Suppression at the Relay

Ramamurthi

2014

IEEE Trans. Veh. Technol.

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“…The signal r R is amplified and re‐transmitted to the destination terminal, which also suffers from single CCI. The received signal at the terminal D can be written as

r_{D} (t) MathClass-rel= α_{2} G ((), α_{1} r_{S} (t) MathClass-bin+ h_{1} x_{R} (t)) MathClass-bin+ h_{2} x_{D} (t)

where h 2 is fading envelope of CCI at the destination and x D represents the CCI at the destination with average power P 2 .…”

Section: System Model In Interference‐limited Environmentmentioning

confidence: 99%

Outage performance of dual‐hop relaying systems over extended generalized‐K fading channels

Stefanović

Anastasov

Cvetković

et al. 2014

Wireless Communications

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The outage performance of the amplify‐and‐forward relaying strategies over mutually uncorrelated extended generalized‐K fading channels is addressed in this paper. The attention is dedicated to the analyses of the noise‐limited and also interference‐limited environment. The new analytical expression for outage probability of observed relaying system in the presence of thermal noise is derived using the method for approximating equivalent signal‐to‐noise ratio. In addition, the outage performance is studied for the dual‐hop system when only the single dominant co‐channel interference is inherent at the relay and destination node. The correctness of the proposed mathematical derivations is verified by simulations. Copyright © 2014 John Wiley & Sons, Ltd.

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“…To evaluate previous expression, we have to find P eq . It can be evaluated as [11] th th th eq P P P Finally, substituting (13) and (14) in (12) The influence of the SIR ratio, , 3 1 / , on the ABER values for the 4-Q signal detection (a=b=0.5) is presented in Fig. 2 Fig.…”

Section: System and Channel Modelmentioning

confidence: 99%

“…In that paper, the performance of a Rayleigh dualhop relay channel effected by an additive white Gaussian noise (AWGN) at the relay and multiple co-channel interferences at the destination was investigated. The paper [13] studies the outage probability of both types of the non-regenerative relays over Rayleigh fading channels in an interference-limited environment (the relay and destination nodes are corrupted by CCI).…”

mentioning

confidence: 99%

ABER performance of dual-hop system over asymmetric fading channels with interference at the relay

Anastasov

Cvetković

Panic³

et al. 2011

2011 19thTelecommunications Forum (TELFOR) Proceedings of Papers

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This paper studies the performance of a dualhop amplify-and-forward (AF) system where the sourcerelay and relay-destination channels experience Rayleigh and Rician fading, respectively. The relay node is corrupted by Rayleigh faded multiple co-channel interferences. Based on proposed system model, new closed-form expression for the average bit error rate (ABER), in the case of several modulation formats, is derived. Numerical results are performed in order to verify analytical approach.Keywords -Amplify-and-forward relay, average bit error rate, co-channel interference, fading channel, outage probability.

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Performance of interference-limited dual-hop non-regenerative relays over Rayleigh fading channels

Cited by 25 publications

References 11 publications

A Two-Hop AF Relaying Scheme With Interference Suppression at the Relay

A Two-Hop AF Relaying Scheme With Interference Suppression at the Relay

Outage performance of dual‐hop relaying systems over extended generalized‐K fading channels

ABER performance of dual-hop system over asymmetric fading channels with interference at the relay

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