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Radio Frequency Exposure Compliance of Multiple Antennas for Cellular Equipment Based on Semidefinite Relaxation

Xu, Bo LU ; Gustafsson, Mats LU ; Shi, Shuai; Zhao, Kun; Ying, Zhinong and He, Sailing (2018) In IEEE Transactions on Electromagnetic Compatibility
Abstract

Human exposure to radio frequency (RF) electromagnetic fields should not exceed the exposure limits set by the relevant regulatory guidelines. In this paper, we provide approaches to determine upper bounds of maximum exposure from multiple antennas. When the total transmitted power is fixed, the maximum exposure can be determined by an eigenvalue decomposition. If an individual antenna has additional power constraint, the exposure maximization problem can be relaxed to a semidefinite program. Two case studies are given to demonstrate the approaches to the maximum exposure of cellular equipment using multiple antennas. The methods and the obtained results provide valuable insights into RF compliance procedures of cellular equipment.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
5G, 5G mobile communication, Antennas, cellular equipment, Density measurement, eigenvalue decomposition (EVD), MIMO communication, multi-input and multi-output (MIMO), multiple antennas, power density, Power system measurements, Radio frequency, radio frequency (RF) exposure, semidefinite relaxation (SDR), specific absorption rate (SAR)
in
IEEE Transactions on Electromagnetic Compatibility
external identifiers
  • scopus:85047999601
ISSN
0018-9375
DOI
language
English
LU publication?
yes
id
4e8c9f3a-715f-4c01-b5ed-59e0dbf8e58d
date added to LUP
2018-06-12 14:23:23
date last changed
2018-06-12 14:23:23
@article{4e8c9f3a-715f-4c01-b5ed-59e0dbf8e58d,
  abstract     = {<p>Human exposure to radio frequency (RF) electromagnetic fields should not exceed the exposure limits set by the relevant regulatory guidelines. In this paper, we provide approaches to determine upper bounds of maximum exposure from multiple antennas. When the total transmitted power is fixed, the maximum exposure can be determined by an eigenvalue decomposition. If an individual antenna has additional power constraint, the exposure maximization problem can be relaxed to a semidefinite program. Two case studies are given to demonstrate the approaches to the maximum exposure of cellular equipment using multiple antennas. The methods and the obtained results provide valuable insights into RF compliance procedures of cellular equipment.</p>},
  author       = {Xu, Bo and Gustafsson, Mats and Shi, Shuai and Zhao, Kun and Ying, Zhinong and He, Sailing},
  issn         = {0018-9375},
  keyword      = {5G,5G mobile communication,Antennas,cellular equipment,Density measurement,eigenvalue decomposition (EVD),MIMO communication,multi-input and multi-output (MIMO),multiple antennas,power density,Power system measurements,Radio frequency,radio frequency (RF) exposure,semidefinite relaxation (SDR),specific absorption rate (SAR)},
  language     = {eng},
  month        = {05},
  series       = {IEEE Transactions on Electromagnetic Compatibility},
  title        = {Radio Frequency Exposure Compliance of Multiple Antennas for Cellular Equipment Based on Semidefinite Relaxation},
  url          = {http://dx.doi.org/},
  year         = {2018},
}