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Communication dans un congrès

Optimal power allocation policies in multi-hop cognitive radio networks

Abstract : This paper investigates a power allocation problem in an optimal and closed-form manner for a relay-aided cognitive network composed of one primary and secondary user/destination pair (e.g., a cellular link coexisting with a device-to-device link in a device-to-device enabled cellular communication setup) and one secondary full-duplex relay. By exploiting the monotonic properties of the objective function and the geometry of the feasible set, we provide the optimal and closed-form power allocation policy assuming the relay performs either Decode-and-Forward (DF) or Compress-and-Forward (CF). We then conjecture that if the secondary direct link is missing, then DF always outperforms CF, irrespective from the system parameters. This conjecture is sustained by numerous numerical simulations.
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https://hal.archives-ouvertes.fr/hal-02932927
Contributeur : Anne Savard <>
Soumis le : mardi 8 septembre 2020 - 08:58:43
Dernière modification le : mardi 24 novembre 2020 - 14:18:16

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PIMRC_2020_alloc.pdf
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  • HAL Id : hal-02932927, version 1

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Anne Savard, Elena Veronica Belmega. Optimal power allocation policies in multi-hop cognitive radio networks. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Aug 2020, London, United Kingdom. ⟨hal-02932927⟩

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