A novel quantification of 3D directional spread from small-scale fading analysis

A Pal, MA Beach, AR Nix

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

8 Citations (Scopus)
463 Downloads (Pure)


The directional dispersion of multipath energy arriving at the receiver is an important quantity, as increasing it leads to lower correlation between spatial diversity elements. The ‘RMS angular spread’ metric, commonly used to measure this, is only applicable for relatively small angles in the 2-D plane. The quantification of the 3-D directional spread is not straighforward, and must be justified analytically by showing its relation to spatial selectivity, and hence spatial correlation. In this paper, an analysis of the second order moments of spatial fading has been used to define a spatial covariance matrix, which fully describes the second order moments of the directional energy distribution. An eigenvalue decomposition of this matrix has been used to propose a concise quantification of directional spread that is applicable for arbitrary distribution of multipath rays or clusters in 3-D directions. The effect of array orientation has also been investigated
Translated title of the contributionA novel quantification of 3D directional spread from small-scale fading analysis
Original languageEnglish
Title of host publicationInternational Conference on Communications (ICC), Istanbul, Turkey
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1699 - 1704
Number of pages6
ISBN (Print)1424403553
Publication statusPublished - Jun 2006
EventInternational Conference on Communications (ICC) - Istanbul, Turkey
Duration: 1 Jun 2006 → …


ConferenceInternational Conference on Communications (ICC)
Period1/06/06 → …

Bibliographical note

Conference Proceedings/Title of Journal: IEEE International Conference on Communications, 2006. ICC '06
Rose publication type: Conference contribution

Additional information: With accompanying conference poster

Sponsorship: Arindam Pal would like to thank ORS UK and the University of Bristol for the postgraduate scholarship

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