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Antenna Selection and Power Allocation for Energy Efficient MIMO Systems
Mahdi Eskandari,Ali Mohamad Doost-Hoseini,정재훈,이인규 한국통신학회 2018 Journal of communications and networks Vol.20 No.6
In this paper, we investigate a new solution for theenergy efficiency (EE) maximization and power allocation problemin point-to-point multiple-input multiple-output (MIMO) spatialmultiplexing schemes. Different from conventional energyefficientoptimization approaches that require iterative numericalalgorithms, we derive an optimal solution in a closed form, whichprovides an insight upon the relation between the optimum EE andsystem parameters such as circuit power and channel conditions. In addition, using the proposed closed form function, we present anupper bound on the optimum EE in terms of the full active transmitantennas parameters. Based on the derived upper bound, we alsopropose a new antenna selection algorithm which achieves almostthe same performance as the optimum solution with much reducedcomplexity.