Energy-Efficiency Analysis of Per-Subcarrier Antenna Selection with Peak-Power Reduction in MIMO-OFDM Wireless Systems
Joint Authors
Safaei, Farzad
Le, Ngoc Phuc
Tran, Le Chung
Source
International Journal of Antennas and Propagation
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-06-11
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
The use of per-subcarrier antenna subset selection in OFDM wireless systems offers higher system capacity and/or improved link reliability.
However, the implementation of the conventional per-subcarrier selection scheme may result in significant fluctuations of the average power and peak power across antennas, which affects the potential benefits of the system.
In this paper, power efficiency of high-power amplifiers and energy efficiency in per-subcarrier antenna selection MIMO-OFDM systems are investigated.
To deliver the maximum overall power efficiency, we propose a two-step strategy for data-subcarrier allocation.
This strategy consists of an equal allocation of data subcarriers based on linear optimization and peak-power reduction via cross-antenna permutations.
For analysis, we derive the CCDF (complementary cumulative distribution function) of the power efficiency as well as the analytical expressions of the average power efficiency.
It is proved from the power-efficiency perspective that the proposed allocation scheme outperforms the conventional scheme.
We also show that the improvement in the power efficiency translates into an improved capacity and, in turn, increases energy efficiency of the proposed system.
Simulation results are provided to validate our analyses.
American Psychological Association (APA)
Le, Ngoc Phuc& Tran, Le Chung& Safaei, Farzad. 2014. Energy-Efficiency Analysis of Per-Subcarrier Antenna Selection with Peak-Power Reduction in MIMO-OFDM Wireless Systems. International Journal of Antennas and Propagation،Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-1036032
Modern Language Association (MLA)
Le, Ngoc Phuc…[et al.]. Energy-Efficiency Analysis of Per-Subcarrier Antenna Selection with Peak-Power Reduction in MIMO-OFDM Wireless Systems. International Journal of Antennas and Propagation No. 2014 (2014), pp.1-13.
https://search.emarefa.net/detail/BIM-1036032
American Medical Association (AMA)
Le, Ngoc Phuc& Tran, Le Chung& Safaei, Farzad. Energy-Efficiency Analysis of Per-Subcarrier Antenna Selection with Peak-Power Reduction in MIMO-OFDM Wireless Systems. International Journal of Antennas and Propagation. 2014. Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-1036032
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1036032