Noncoherent relay selection for bidirectional cooperative networks

Seyfi, Mehdi; Muhaidat, Sami; Liang, Jie; Tsiftsis, Theodoros A.

doi:10.1109/glocomw.2012.6477553

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…In order to clearly understand important system‐design parameters, we focus here on the high SNR regime. This approach helps us to quantify the amount of performance variations, which are due to the fading effects as well as the scheme's architecture . At the high SNR regime, the exponential PDF and CDF expressions can be approximated by

f_{γ_{X}} (x) \approx \frac{1}{{\overset{γ}{false}}_{X}}

and

F_{γ_{X}} (x) \approx \frac{x}{{\overset{γ}{false}}_{X}}

, respectively.…”

Section: Performance Of the Proposed Scheme With Perfect Channel Statmentioning

confidence: 99%

User selection scheme with limited feedback processing and outdated CSI in multiuser relay networks

Bithas

Rontogiannis

2016

Wireless Communications

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A new user selection strategy is investigated and analyzed in a multiuser relaying environment in the presence of co‐channel interference. The proposed selection scheme aims at avoiding unnecessary feedback load processing, in cases where a target threshold, in the received instantaneous signal‐to‐noise ratio, is exceeded. Assuming that perfect channel state information is available, closed‐form lower bound expressions are derived for the cumulative distribution function of the output signal to interference plus noise ratio. Moreover, the impact of outdated channel state information on the system's performance is also investigated. In addition, under the assumption of high signal‐to‐noise ratio conditions, simplified approximated expressions are also provided for the cumulative distribution functions of the output signal to interference plus noise ratio, which are employed to study the outage probability and bit error probability performance of the system. It is shown that with the proposed approach, a significant reduction in feedback load processing is achieved, with only a slight loss in performance. Copyright © 2016 John Wiley & Sons, Ltd.

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f_{γ_{X}} (x) \approx \frac{1}{{\overset{γ}{false}}_{X}}

and

F_{γ_{X}} (x) \approx \frac{x}{{\overset{γ}{false}}_{X}}

, respectively.…”

Section: Performance Of the Proposed Scheme With Perfect Channel Statmentioning

confidence: 99%

User selection scheme with limited feedback processing and outdated CSI in multiuser relay networks

Bithas

Rontogiannis

2016

Wireless Communications

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show abstract

“…MWRNs have interesting potential applications in teleconferencing, sensor networks or satellite communication networks [2]. MWRNs allow the benefits of network coding to be realised for multiple users through generalising the concept of two-way relay networks (TWRNs) [4][5][6][7][8] for multi-user networks. Another candidate solution for realising the benefits of TWRNs in a multi-user scenario is a multi-user TWRN, where multiple user pairs exchange messages within the pairs [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Achievable rate and error performance of an amplify and forward multi‐way relay network in the presence of imperfect channel estimation

Islam

2016

IET Communications

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An Improved Threshold-Based Channel Selection Scheme for Wireless Communication Systems

Bithas

Rontogiannis

Karagiannidis

2016

IEEE Trans. Wireless Commun.

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The F composite fading model was recently proposed as an accurate and tractable statistical model for the characterization of the composite fading conditions encountered in realistic wireless communication scenarios. In the present contribution we capitalize on the distinct properties of this composite model to derive an analytical framework to evaluate the achievable channel capacity over F composite fading channels under different channel state information (CSI) assumptions.To this end, we first consider that CSI is known only at the receiver, for which we derive novel analytic expressions for the channel capacity under optimum rate adaptation as well as for the corresponding effective capacity. Then, by considering that CSI is known both at the transmitter and at the receiver, we derive novel analytic expressions for the channel capacity under optimum power and rate adaptation, channel inversion with fixed rate and truncated channel inversion with fixed rate. The derived analytic expressions for the considered scenarios are provided in closed-form and benefit from being tractable both analytically and numerically. This enables the derivation of simple bounds as well as approximate and asymptotic expressions which are shown to be useful as they provide meaningful insights on the effect of fading conditions and/or latency on the overall system performance.

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Noncoherent relay selection for bidirectional cooperative networks

Cited by 3 publications

References 20 publications

User selection scheme with limited feedback processing and outdated CSI in multiuser relay networks

User selection scheme with limited feedback processing and outdated CSI in multiuser relay networks

Achievable rate and error performance of an amplify and forward multi‐way relay network in the presence of imperfect channel estimation

An Improved Threshold-Based Channel Selection Scheme for Wireless Communication Systems

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