Energy-Efficient Hybrid Precoding Scheme Based on Antenna Selection Technology in Massive Multiple-Input Multiple-Output Systems
Joint Authors
Source
International Journal of Antennas and Propagation
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-05-02
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Hybrid precoding is a promising technology for massive multiple-input multiple-output (MIMO) systems.
It can reduce the number of radio frequency (RF) chains.
However, the power consumption is still very high owing to the large-scale antenna array.
In this paper, we propose an energy-efficient precoding scheme based on antenna selection technology.
The precoding scheme greatly increases the energy efficiency (EE) of the system.
In the first step, we derive an exact closed-form expression of EE.
Meanwhile, we further study the relationship between the number of transmit antennas and EE on the basis of the exact closed-form expression of EE.
We prove that there exists an optimal value.
When the number of transmit antennas equals to the value, the EE of the system can reach the maximum by a proper hybrid precoding scheme.
Then, we propose an antenna selection algorithm to select antennas from the transmit antennas.
And the number of selected antennas equals to the optimal value.
Subsequently, we design the analog precoder based on a codebook to maximize the equivalent channel gain.
At last, we further improve the EE by baseband digital precoding.
The precoding algorithm we proposed offers a compromise between spectral efficiency (SE) and EE in millimeter wave (mmWave) massive MIMO systems.
Finally, simulation results validate our theoretical analysis and show that a substantial EE gain can be obtained over the precoding scheme we proposed without large performance loss.
American Psychological Association (APA)
Ding, Jian Jun& Jiang, Jing. 2019. Energy-Efficient Hybrid Precoding Scheme Based on Antenna Selection Technology in Massive Multiple-Input Multiple-Output Systems. International Journal of Antennas and Propagation،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1157400
Modern Language Association (MLA)
Ding, Jian Jun& Jiang, Jing. Energy-Efficient Hybrid Precoding Scheme Based on Antenna Selection Technology in Massive Multiple-Input Multiple-Output Systems. International Journal of Antennas and Propagation No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1157400
American Medical Association (AMA)
Ding, Jian Jun& Jiang, Jing. Energy-Efficient Hybrid Precoding Scheme Based on Antenna Selection Technology in Massive Multiple-Input Multiple-Output Systems. International Journal of Antennas and Propagation. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1157400
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157400