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Computer Science > Information Theory

arXiv:2409.03436 (cs)
[Submitted on 5 Sep 2024]

Title:Fundamentals of Energy-Efficient Wireless Links: Optimal Ratios and Scaling Behaviors

Authors:Anders Enqvist, Özlem Tuğfe Demir, Cicek Cavdar, Emil Björnson
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Abstract:In this paper, we examine the energy efficiency (EE) of a base station (BS) with multiple antennas. We use a state-of-the-art power consumption model, taking into account the passive and active parts of the transceiver circuitry, including the effects of radiated power, signal processing, and passive consumption. The paper treats the transmit power, bandwidth, and number of antennas as the optimization variables. We provide novel closed-form solutions for the optimal ratios of power per unit bandwidth and power per transmit antenna. We present a novel algorithm that jointly optimizes these variables to achieve maximum EE, while fulfilling constraints on the variable ranges. We also discover a new relationship between the radiated power and the passive transceiver power consumption. We provide analytical insight into whether using maximum power or bandwidth is optimal and how many antennas a BS should utilize.
Comments: 6 pages, 4 figures
Subjects: Information Theory (cs.IT)
Cite as: arXiv:2409.03436 [cs.IT]
  (or arXiv:2409.03436v1 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.2409.03436

Submission history

From: Anders Enqvist Mr [view email]
[v1] Thu, 5 Sep 2024 11:37:03 UTC (288 KB)
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