Investigating Communications Energy Efficiency Tradeoff Between UAV Users and Small-cell Users

In this paper, a novel method is proposed to study the tradeoff between energy efficiency (EE) of small-cell users and unmanned aerial vehicles (UAV) users in multi-cell orthogonal frequency division multiple access (OFDMA)-based networks. Contrary to the prior works that only maximize the EE of the...

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Bibliographic Details
Published in:IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications workshops (Print) pp. 342 - 347
Main Authors: Hashemi, Ramin, Mili, Mohammad Robat, Ali, Samad, Beyranvand, Hamzeh, Latva-Aho, Matti
Format: Conference Proceeding
Language:English
Published: IEEE 13.09.2021
Subjects:
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Energy efficiency
heterogeneous network
multi-objective optimization problem
OFDM
OFDMA
Optimization
Performance gain
Quality of service
small-cell
Unmanned aerial vehicles
ISSN:2166-9589
Online Access:Get full text
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Summary:In this paper, a novel method is proposed to study the tradeoff between energy efficiency (EE) of small-cell users and unmanned aerial vehicles (UAV) users in multi-cell orthogonal frequency division multiple access (OFDMA)-based networks. Contrary to the prior works that only maximize the EE of the UAV network subject to some constraints on transmit power of UAV users, we formulate a multi-objective optimization problem (MOOP) that jointly maximize the EE of small-cell and UAV users while guaranteeing the minimum rate for UAV users as well as maximum transmit powers for the corresponding small-cell and UAV BSs. The proposed MOOP is transformed into a single optimization problem (SOOP) by the weighted Tchebycheff approach. Then, an iterative technique is used to optimize alternatively subchannels and transmission powers of small-cell and UAV networks at each step. Numerical results show that a substantial performance gain can be obtained over the existing solutions.
ISSN:2166-9589
DOI:10.1109/PIMRC50174.2021.9569546