Search results for "Multi-cell"

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Energy Efficiency Optimization for Multi-cell Massive MIMO : Centralized and Distributed Power Allocation Algorithms

2021

This paper investigates the energy efficiency (EE) optimization in downlink multi-cell massive multiple-input multiple-output (MIMO). In our research, the statistical channel state information (CSI) is exploited to reduce the signaling overhead. To maximize the minimum EE among the neighbouring cells, we design the transmit covariance matrices for each base station (BS). Specifically, optimization schemes for this max-min EE problem are developed, in the centralized and distributed ways, respectively. To obtain the transmit covariance matrices, we first find out the closed-form optimal transmit eigenmatrices for the BS in each cell, and convert the original transmit covariance matrices desi…

Signal Processing (eess.SP)FOS: Computer and information sciencesmallintaminenComputational complexity theoryComputer scienceenergiatehokkuusComputer Science - Information TheoryMIMO02 engineering and technologyPrecoding0203 mechanical engineeringoptimointistatistical CSIalgoritmit0202 electrical engineering electronic engineering information engineeringFOS: Electrical engineering electronic engineering information engineeringOverhead (computing)Electrical and Electronic EngineeringElectrical Engineering and Systems Science - Signal Processingenergy efficiencymax-min fairnessInformation Theory (cs.IT)020206 networking & telecommunications020302 automobile design & engineeringmulti-cell MIMOCovarianceDistributed algorithmChannel state informationConvex optimizationdistributed processingAlgorithm
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Efficient Power Allocation for Multi-Cell Uplink NOMA Network

2019

Digital technologies are rapidly shaping the modern concepts of urbanization. It is a key element of developing practical smart cities of the future. In fact, they are the catalyst for the increasing networking of all areas of life in a smart city. Recent development in the domain of communication technologies has opened new avenues to realize the concept of smart cities. One of such communication technology is non-orthogonal multiple access (NOMA) for future cellular communications. This article, therefore, focuses on the interference management of uplink cellular NOMA systems. Specifically, we propose a power optimization technique for NOMA to improve the sum-rate in a multi-cell environm…

energiatehokkuusComputer science5G-tekniikkamatkaviestinverkot02 engineering and technologyNomaoptimointi0203 mechanical engineeringSmart cityTelecommunications link0202 electrical engineering electronic engineering information engineeringmedicineMulti-cellSmart citybusiness.industryPower optimization020206 networking & telecommunications020302 automobile design & engineeringNakagami distributionmedicine.diseasePower optimizationCellular communicationNon-orthogonal multiple access (NOMA)Key (cryptography)älytekniikkaNakagami-mbusinessComputer networkCommunication channel2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)
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