Earticle

초록

영어

In this paper, transmit antenna selection is performed to improve the energy efficiency of multiuser large scale MIMO systems, which is necessary for the energy efficiency maximization of large scale MIMO, because the RF chains which are connected with antennas are very expensive and consume a lot of power. However, the consumed power of the large scale MIMO systems should include not only transmit power but also the fundamental power for operating the circuit at the transmitter, because the effect of circuit power consumption is more serious when the transmitter is equipped with massive number of antennas. We evaluate the performance of the energy efficiency in the multiuser case where zero-forcing precoding is used to reduce the inter-user interference. The theoretical analysis indicates that there exists an optimal number of selected antennas to maximize the energy efficiency, and we derive optimal antenna number for different number of users. All the analytical results are verified through both mathematical analysis and numerical simulations.

목차

Abstract
 1. Introduction
 2. System Model
 3. Analysis of Energy Efficiency with Transmit Antenna Selection
 4. Simulation Results
 5. Conclusions
 Acknowledgements
 References

키워드

저자

• Jie Li [ School of Information Engineering, Zhengzhou University, Zhengzhou, China ]
• Shuangzhi Li [ School of Information Engineering, Zhengzhou University, Zhengzhou, China ]
• Xiaomin Mu [ School of Information Engineering, Zhengzhou University, Zhengzhou, China ]
• Jiankang Zhang [ School of Information Engineering, Zhengzhou University, Zhengzhou, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Multimedia and Ubiquitous Engineering

• 간기

  월간

• pISSN

  1975-0080

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605