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End-to-End Energy Efficiency Evaluation for B5G Ultra Dense Networks

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Document pages: 6 pages

Abstract: Energy efficiency (EE) is a major performance metric for fifth generation(5G) and beyond 5G (B5G) wireless communication systems, especially for ultradense networks. This paper proposes an end-to-end (e2e) power consumption modeland studies the energy efficiency for a heterogeneous B5G cellular architecturethat separates the indoor and outdoor communication scenarios in ultra densenetworks. In this work, massive multiple-input-multiple-output (MIMO)technologies at conventional sub-6 GHz frequencies are used for long-distanceoutdoor communications. Light-Fidelity (LiFi) and millimeter wave (mmWave)technologies are deployed to provide a high data rate service to indoor users.Whereas, in the referenced nonseparated system, the indoor users communicatewith the outdoor massive MIMO macro base station directly. The performance ofthese two systems are evaluated and compared in terms of the total powerconsumption and energy efficiency. The results show that the networkarchitecture which separates indoor and outdoor communication can support ahigher data rate transmission for less energy consumption, compared tonon-separate communication scenario. In addition, the results show thatdeploying LiFi and mmWave IAPs can enable users to transmit at a higher datarate and further improve the EE.

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