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• W3213208864 endingPage "570" @default.
• W3213208864 startingPage "557" @default.
• W3213208864 abstract "Consider a base station (BS) relying on a massive antenna array, which transmits information to multiple vehicles of vehicular networks. In order to jointly consider both the communication resource consumption and the road-traffic efficiency, we define a metric given by the BS's downlink power normalized by the vehicular velocity. We refer to it as the Power to Velocity Ratio (PVR). The prime objective of this paper is to minimize either the maximum individual vehicle PVR or the entire system's PVR by optimizing the power allocation at the BS, while guaranteeing the information requirements of the vehicles both under the total transmit power constraint and driving velocity constraint. As for the individual vehicle PVR, a closed-form power allocation expression is derived by assuming that the transmit power constraint is non-restrictive. Based on this an optimal power allocation algorithm is proposed for arbitrary finite transmit power constraints. As for the system PVR, the non-convex problem formulated is first transformed into a convex problem and then the optimal solution is found by conceiving an efficient iterative algorithm. Our simulation results show that the proposed algorithms indeed succeed in achieving the optimal individual vehicle or system PVR." @default.
• W3213208864 created "2021-11-22" @default.
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• W3213208864 date "2022-01-01" @default.
• W3213208864 modified "2023-10-14" @default.
• W3213208864 title "Optimization of the Power-to-Velocity Ratio in the Downlink of Vehicular Networks" @default.
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• W3213208864 doi "https://doi.org/10.1109/tvt.2021.3128699" @default.
• W3213208864 hasPublicationYear "2022" @default.
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