An optimal power allocation for D2D communications over multi-user cellular uplink channels

Omorinoye, Adeola Abraham, Vien, Quoc-Tuan ORCID:, Le, Tuan Anh ORCID: and Shah, Purav ORCID: (2019) An optimal power allocation for D2D communications over multi-user cellular uplink channels. Duong, Trung Q., Vo, Nguyen-Son, Nguyen, Loi K., Vien, Quoc-Tuan ORCID: and Nguyen, Van-Dinh, eds. Industrial Networks and Intelligent Systems: 5th EAI International Conference, INISCOM 2019, Ho Chi Minh City, Vietnam, August 19, 2019, Proceedings. In: 5th EAI International Conference on Industrial Networks and Intelligent Systems (INISCOM 2019), 19 Aug 2019, Ho Chi Minh, Vietnam, Vietnam. ISBN 9783030301484, e-ISBN 9783030301491. ISSN 1867-8211 [Conference or Workshop Item] (doi:10.1007/978-3-030-30149-1_5)

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Device-to-Device (D2D) communications has emerged as a promising technology for optimizing spectral efficiency, reducing latency, improving data rate and increasing system capacity in cellular networks. Power allocation in D2D communication to maintain Quality-of-Service (QoS) remains as a challenging task. In this paper, we investigate the power allocation in D2D underlaying cellular networks with multi-user cellular uplink channel reuse. Specifically, this paper aims at minimizing the total transmit power of D2D users and cellular users (CUs) sub- ject to QoS requirement at each user in terms of the required signal-to- interference-plus-noise ratio (SINR) at D2D users and base station (BS) over uplink channel as well as their limited transmit power. We first derive expressions of SINR at the D2D users and BS based on which an optimization framework for power allocation is developed. We then propose an optimal power allocation algorithm for all D2D users and CUs by taking into account the property of non-negative inverse of a Z- matrix. The proposed algorithm is validated through simulation results which show the impacts of noise power, distance between D2D users, the number of D2D pairs and the number of CUs on the power allocation in the D2D underlaying cellular networks.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Paper published as:
Omorinoye A., Vien QT., Le T.A., Shah P. (2019) An Optimal Power Allocation for D2D Communications over Multi-user Cellular Uplink Channels. In: Duong T., Vo NS., Nguyen L., Vien QT., Nguyen VD. (eds) Industrial Networks and Intelligent Systems. INISCOM 2019. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 293. Springer, Cham
Research Areas: A. > School of Science and Technology > Computer and Communications Engineering
Item ID: 28299
Notes on copyright: The final authenticated publication is available online at
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Depositing User: Quoc-Tuan Vien
Date Deposited: 25 Nov 2019 10:09
Last Modified: 04 Feb 2021 19:20

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