Partial QoS-Aware Opportunistic Relay Selection Over Two-Hop Channels: End-to-End Performance Under Spectrum-Sharing Requirements

Yang, Yuli, Ma, Hao and Aissa, Sonia (2014) Partial QoS-Aware Opportunistic Relay Selection Over Two-Hop Channels: End-to-End Performance Under Spectrum-Sharing Requirements. IEEE Transactions on Vehicular Technology, 63 (8). pp. 3829-3840. ISSN 0018-9545

Full content URL: http://doi.org/10.1109/TVT.2014.2306437

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Abstract

In this paper, we propose a partial quality-of-service (QoS)-oriented relay selection scheme with a decode-and-forward (DF) relaying protocol, to reduce the feedback amount required for relay selection. In the proposed scheme, the activated relay is the one with the maximum signal-to-noise power ratio (SNR) in the second hop among those whose packet loss rates (PLRs) in the first hop achieve a predetermined QoS level. For the purpose of evaluating the performance of the proposed scheme, we exploit it with transmission constraints imposed on the transmit power budget and interference to other users. By analyzing the statistics of received SNRs in the first and second hops, we obtain the end-to-end PLR of this scheme in closed form under the considered scenario. Moreover, to compare the proposed scheme with popular relay selection schemes, we also derive the closed-form PLR expressions for partial relay selection (PRS) and opportunistic relay selection (ORS) criteria in the same scenario under study. Illustrative numerical results demonstrate the accuracy of our derivations and substantiate that the proposed relay selection scheme is a promising alternative with respect to the tradeoff between performance and complexity.

Keywords:Decode and forward, Packet loss rate, Relaying, Relay selection, Spectrum sharing
Subjects:H Engineering > H610 Electronic Engineering
H Engineering > H640 Communications Engineering
Divisions:College of Science > School of Engineering
ID Code:39394
Deposited On:08 Jan 2020 08:34

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