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Resource and Power Allocation for OFDM-Based Device-to-Device Communications in a Multicell Environment

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Abstract

We investigate the optimal resource and power allocation for device-to-device (D2D) communications in a multicell environment. When D2D links reuse the cellular radio resources, each D2D user will interfere with a cellular link and other D2D links, in its own cell as well as in adjacent cells. We first develop a distributed resource allocation scheme that is performed by each base station independently. Then, we propose a coordinated resource allocation scheme that can handle the intercell interferences as well as the intracell interference. For a given resource allocation, we also formulate a power optimization problem and present an algorithm to find the optimal solution. The resource and power allocation algorithms are designed to maximize the achievable rate of the D2D link, while limiting the interference generated to the cellular link. The performance of the proposed algorithms is evaluated through simulations in a multicell environment. Numerical results are presented to verify the coordination gain in the resource and power allocation.

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Notes

  1. We will add the leading subscript 𝓁 to indicate that the variable is associated with the 𝓁th cell.

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ACKNOWLEDGMENTS

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (no. 2019R1A2C1084834).

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Authors and Affiliations

  1. School of Electronic Engineering, Soongsil University, 369 Sangdo-Ro, 06978, Donjak-Gu, Seoul, Korea

    Gil-Mo Kang &  Oh-Soon Shin

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  1. Gil-Mo Kang
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  2. Oh-Soon Shin
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Correspondence to Gil-Mo Kang or Oh-Soon Shin.

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Gil-Mo Kang, Oh-Soon Shin Resource and Power Allocation for OFDM-Based Device-to-Device Communications in a Multicell Environment. J. Commun. Technol. Electron. 65, 532–540 (2020). https://doi.org/10.1134/S1064226920050083

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  • DOI: https://doi.org/10.1134/S1064226920050083

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