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Estimating the Cross-Correlation Properties of Large-Scale Parameters in Multilink Distributed Antenna Systems : Synchronous Measurements Versus Repeated Measurements

Dahman, Ghassan LU ; Flordelis, Jose LU and Tufvesson, Fredrik LU (2017) In IEEE Transactions on Vehicular Technology 66(9). p.7633-7642
Abstract

It is essential to capture the cross-correlation properties of large-scale parameters (LSPs) among different base station links in cooperative multilink systems in order to make realistic performance assessments. In this work, propagation measurements are used to study the cross-correlation properties of different LSPs, namely large-scale fading, delay spread, azimuth spread, and elevation spread of four links. The interlink cross-correlation coefficients of these LSPs are assessed based on two different measurement approaches: 1) synchronous measurements, where the values of the LSPs of the considered links are estimated from the same measurement run; and 2) repeated measurements, where the values of the LSPs of the considered links... (More)

It is essential to capture the cross-correlation properties of large-scale parameters (LSPs) among different base station links in cooperative multilink systems in order to make realistic performance assessments. In this work, propagation measurements are used to study the cross-correlation properties of different LSPs, namely large-scale fading, delay spread, azimuth spread, and elevation spread of four links. The interlink cross-correlation coefficients of these LSPs are assessed based on two different measurement approaches: 1) synchronous measurements, where the values of the LSPs of the considered links are estimated from the same measurement run; and 2) repeated measurements, where the values of the LSPs of the considered links are estimated from different measurement runs. Repeated measurements are attractive because they are simpler and less expensive. In this paper, we address the following question: Can repeated measurements be used instead of synchronous measurements in order to estimate the LSPs' cross-correlation properties of different links? Based on analysis of wideband synchronous and repeated multilink measurements in a suburban microcell environment at 2.6 GHz, we found that: 1) the mean values of the cross-correlation coefficients are preserved with repeated measurements, and 2) the estimates of the cross-correlation coefficients from repeated measurements are less spread around the mean value than those from synchronous measurements. These findings are explained based on detailed investigation of specific measured cases and further supported by results obtained from Monte Carlo simulations.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Distributed antenna systems, inter-link cross-correlation, large-scale parameters, multi-link systems
in
IEEE Transactions on Vehicular Technology
volume
66
issue
9
pages
10 pages
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85029943481
  • wos:000411326100002
ISSN
0018-9545
DOI
10.1109/TVT.2017.2691474
language
English
LU publication?
yes
id
92bf8f23-d15d-4206-9b83-1c462326e08e
date added to LUP
2017-10-06 08:41:24
date last changed
2018-04-15 04:47:42
@article{92bf8f23-d15d-4206-9b83-1c462326e08e,
  abstract     = {<p>It is essential to capture the cross-correlation properties of large-scale parameters (LSPs) among different base station links in cooperative multilink systems in order to make realistic performance assessments. In this work, propagation measurements are used to study the cross-correlation properties of different LSPs, namely large-scale fading, delay spread, azimuth spread, and elevation spread of four links. The interlink cross-correlation coefficients of these LSPs are assessed based on two different measurement approaches: 1) synchronous measurements, where the values of the LSPs of the considered links are estimated from the same measurement run; and 2) repeated measurements, where the values of the LSPs of the considered links are estimated from different measurement runs. Repeated measurements are attractive because they are simpler and less expensive. In this paper, we address the following question: Can repeated measurements be used instead of synchronous measurements in order to estimate the LSPs' cross-correlation properties of different links? Based on analysis of wideband synchronous and repeated multilink measurements in a suburban microcell environment at 2.6 GHz, we found that: 1) the mean values of the cross-correlation coefficients are preserved with repeated measurements, and 2) the estimates of the cross-correlation coefficients from repeated measurements are less spread around the mean value than those from synchronous measurements. These findings are explained based on detailed investigation of specific measured cases and further supported by results obtained from Monte Carlo simulations.</p>},
  articleno    = {7892980},
  author       = {Dahman, Ghassan and Flordelis, Jose and Tufvesson, Fredrik},
  issn         = {0018-9545},
  keyword      = {Distributed antenna systems,inter-link cross-correlation,large-scale parameters,multi-link systems},
  language     = {eng},
  month        = {09},
  number       = {9},
  pages        = {7633--7642},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Vehicular Technology},
  title        = {Estimating the Cross-Correlation Properties of Large-Scale Parameters in Multilink Distributed Antenna Systems : Synchronous Measurements Versus Repeated Measurements},
  url          = {http://dx.doi.org/10.1109/TVT.2017.2691474},
  volume       = {66},
  year         = {2017},
}