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Secrecy Performance Analysis of Hybrid AF-DF Relaying Under Multi Hop Environment

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Abstract

In this work, a three-hop wireless relaying model comprising of a single source and destination node, along with two relay nodes and an eavesdropper is considered. We made a detailed performance analysis comparison between the multi-hop network and the conventional single-hop model by considering different parameters. Due to the broadcast behaviour of a wireless communication network the propagated message from the source is captured by both intended and an unintended receiver. This will lead to severe security breaches in a wireless medium, so providing fully secure communication is a critical issue. Physical layer security developed as a new archetype to afford security to a wireless communication network. Multi-hop networks are favourite over single-hop networks for better coverage extension and lower interference levels. To use the benefits of both, amplify and forward and decode and forward protocol collectively, a new scheme known as hybrid amplify decode and forward relaying based on signal to noise ratio is presented. The scheme is proposed for multi hop environment with secrecy capacity as a performance metric. Secrecy capacity of proposed scheme outperforms both AF and DF for different distance parameters and path loss exponent under multi-hop environment.

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  1. Department of Electronics and Communication, NIT, Kurukshetra, Kurukshetra, Haryana, India

    Shweta Pal & Poonam Jindal

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  1. Shweta Pal
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  2. Poonam Jindal
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Correspondence to Shweta Pal.

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Pal, S., Jindal, P. Secrecy Performance Analysis of Hybrid AF-DF Relaying Under Multi Hop Environment. Wireless Pers Commun 111, 1741–1760 (2020). https://doi.org/10.1007/s11277-019-06954-2

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