Power Efficiency of Millimeter Wave Transmission Systems with Large Number of Antennas

Large scale antenna systems (LSAS) in the mmWave bands provide a solution to the problems of spectrum shortage experienced in the conventional microwave bands. In a practical large scale antenna deployment, implementation of hybrid beamforming structures is very important as it provides high array g...

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Bibliographic Details
Published in2016 IEEE 84th Vehicular Technology Conference (VTC-Fall) pp. 1 - 6
Main Authors Gaojian Wang, Bytyn, Andreas, Khajavi, Dara, Yanlu Wang, Negra, Renato, Ascheid, Gerd
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2016
Subjects
Antennas
Array signal processing
Baseband
Optimization
Power demand
Radio frequency
Receivers
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Summary:Large scale antenna systems (LSAS) in the mmWave bands provide a solution to the problems of spectrum shortage experienced in the conventional microwave bands. In a practical large scale antenna deployment, implementation of hybrid beamforming structures is very important as it provides high array gains to overcome the high path loss and achieve sufficient link margins. However, while implementing this we encounter the challenges such as complexity, cost and energy consumption. In this paper a power consumption model for the large scale antenna mmWave system is presented and analysed. From the power consumption model we maximize the energy efficiency of the overall system. Optimization of energy efficiency is a crucial factor in system optimization and design of the powerhungry devices. But with increasing energy efficiency, the spectral efficiency decreases. Thus analysis of the relation between energy and spectral efficiency becomes a critical task and we optimize energy efficiency at a fixed spectral efficiency. The results can then be utilized to guide the practical energy/spectrum efficiency trade-off for the LSAS design.
DOI:10.1109/VTCFall.2016.7881173