Access Point Selection Strategies for Indoor 5G Millimeter-Wave Distributed Antenna Systems

Lei Zhang, Simon Cotton, Seong Ki Yoo, Marta Fernandez, William Scanlon

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Abstract

In this paper, we study the use of three candidate Access Point (AP) selection mechanisms for use with indoor millimetre-wave (mmWave) Distributed Antenna Systems (DASs). These are per-sample random AP selection, one-shot AP selection and per-sample optimal AP selection. To facilitate our analysis, we used a customized measurement system operating at 60 GHz, to record the signal power time series simultaneously received at 9 ceiling mounted AP locations while a mobile user imitating a voice call application. Using the time series data, the localized cross correlation coefficient (CCC) was subsequently estimated from the raw received signal strength (RSS) using the Spearman's rank-order correlation. It was found that the resultant time series of the localized CCCs was well-described by the Gaussian distribution across all of the considered measurement scenarios. Moreover, it was observed that the line-of-sight (LOS) and quasi-LOS (QLOS) paths typically led to higher CCC values with broader spreads than the non-LOS (NLOS) scenarios. To study the potential for signal enhancement by using diversity combining in mmWave DASs, we applied selection combining, equal gain combining and maximal ratio combining before investigating the AP selection mechanisms. Finally, we provide some useful insights into the influence of differing AP numbers on the diversity gain when considering the aforementioned AP selection methods.

Original languageEnglish
Title of host publication15th European Conference on Antennas and Propagation, EuCAP 2021
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Electronic)978-88-31299-02-2
ISBN (Print)978-1-7281-8845-4
DOIs
Publication statusE-pub ahead of print - 27 Apr 2021
Event15th European Conference on Antennas and Propagation,Virtual Conference - Online
Duration: 22 Mar 202126 Mar 2021
Conference number: 15
https://www.eucap.org/

Publication series

Name15th European Conference on Antennas and Propagation, EuCAP 2021

Conference

Conference15th European Conference on Antennas and Propagation,Virtual Conference
Abbreviated titleEuCAP 2021
CityOnline
Period22/03/2126/03/21
Internet address

Bibliographical note

© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Keywords

  • access Point Selection Strategies for Indoor 5G Millimeter-Wave Distributed Antenna Systems Access Point Selection Strategies for Indoor 5G Millimeter-Wave Distributed Antenna Systems
  • channel cross correlation
  • channel measurement
  • distributed antenna system
  • diversity gain
  • millimeter wave
  • time series analysis

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