TY  - JOUR
T1  - Evaluation of Energy-Efficiency Problem in Orthogonal Frequency Division Multiple Access Cellular Networks
AU  - Baştürk, İlhan
PY  - 2019
DA  - March
DO  - 10.18466/cbayarfbe.416583
JF  - Celal Bayar University Journal of Science
JO  - CBUJOS
PB  - Manisa Celal Bayar University
WT  - DergiPark
SN  - 1305-130X
SP  - 9
EP  - 15
VL  - 15
IS  - 1
LA  - en
AB  - In this study, the energy-efficiency (EE) problem is investigated fordownlink Orthogonal Frequency Division Multiple Access (OFDMA) cellularnetworks. The EE maximization problem is defined under certainprescribed per-user quality-of-service (QoS) demands and maximum system powerlimit. EE metric that aims to maximize the system data rate and minimize thetotal power consumption at the same time is used as the objective function ofthe defined problem. In this form the optimization problem belongs to a broadclass of problems called mixed-integer non-linear programming problem (MINLP),that is difficult to solve in its original form in such a multi-carrier,multi-user networks. Hence, we have decomposed the original problem into twoparts and presented a solution that performs subchannel allocation and powerallocation parts separately. Simulationresults are obtained to confirm the performance of the presented scheme interms of energy-efficiency and total data rate.
KW  - Energy-Efficiency
KW  - OFDMA
KW  - Cellular Networks
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UR  - https://doi.org/10.18466/cbayarfbe.416583
L1  - https://dergipark.org.tr/en/download/article-file/674198
ER  -