A Simple Cooperative Diversity Method Based on Deep-Learning-Aided Relay Selection

Publikation

In: IEEE Transactions on Vehicular Technology, Vol. 70, Pages 1-16, IEEE, 2021.

Zusammenfassung

Opportunistic relay selection (ORS) has been recognized as a simple but efficient method for mobile nodes to achieve cooperative diversity in slow fading channels. However, the wrong selection of the best relay arising from outdated channel state information (CSI) in fast time-varying channels substantially degrades its performance. With the proliferation of high-mobility applications and the adoption of higher frequency bands in 5Gand beyond systems, the problem of outdated CSI will become more serious. Therefore, the design of a novel cooperative method that is applicable to not only slow fading but also fast fading is increasing of importance. To this end, we develop and analyze a deep-learning-aided cooperative method coined predictive relay selection (PRS) in this article. It can remarkably improve the quality of CSI through fading channel prediction while retaining the simplicity of ORS by selecting a single opportunistic relay so as to avoid the complexity of multi-relay coordination and synchronization. Information-theoretic analysis and numerical results in terms of outage probability and channel capacity reveal that PRS achieves full diversity gain in slow fading wireless environments and substantially outperforms the existing schemes in fast fading channels.

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TACNET 4.0 - Hochzuverlässige und echtzeitfähige 5G Vernetzung für Industrie 4.0 - Das taktile Internet für Produktion, Robotik und Digitalisierung der Industrie,
KICK - Künstliche Intelligenz in Kommunikationsnetzen,
AI@EDGE - A secure and reusable Artificial Intelligence platform for Edge computing in beyond 5G Networks

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A Simple Cooperative Diversity Method Based on Deep-Learning-Aided Relay Selection

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