A line-of-sight optimised MIMO architecture for outdoor environments

I Sarris, AR Nix

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

3 Citations (Scopus)
524 Downloads (Pure)


The authors present an investigation on the capacity of Line-of-Sight (LoS) optimised and conventional (narrow-spaced) Multiple-Input Multiple-Output (MIMO) communication systems in outdoor environments. Under a LoS scenario, the channel is normally rank deficient due to the linear dependence of the LoS rays’ phases on the receive elements. To overcome this problem, specifically designed antenna arrays can be employed, where the antenna elements are positioned to preserve the orthogonality of the LoS signal at the receiver; hence maximising the channel rank. A previously derived maximum capacity criterion is employed in the design of the proposed LoS-optimised MIMO system. The performance of this system is then assessed by means of a raytracing simulation and compared with that of a conventional MIMO system. It is shown that the proposed system exhibits a significant capacity enhancement (45.3 %) in the deployment area. Moreover, the capacity was found to be higher than that predicted by the i.i.d. Rayleigh fading model due to non-fading nature of the LoS signals
Translated title of the contributionA Line-of-Sight optimised MIMO architecture for outdoor environments
Original languageEnglish
Title of host publicationIEEE 64th Vehicular Technology Conference, 2006 (VTC-2006 Fall), Montreal
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1 - 5
Number of pages5
ISBN (Print)1424400635
Publication statusPublished - Sep 2006
Event64th Vehicular Technology Conference 2006 (VTC 2006-Fall) - Montreal, Canada
Duration: 1 Sep 2006 → …


Conference64th Vehicular Technology Conference 2006 (VTC 2006-Fall)
Period1/09/06 → …

Bibliographical note

Name and Venue of Event: IEEE 64th Vehicular Technology Conference, 2006 (VTC-2006 Fall)
Conference Proceedings/Title of Journal: IEEE 64th Vehicular Technology Conference, 2006 (VTC-2006 Fall)
Rose publication type: Conference contribution

Additional information: With accompanying conference presentation

Sponsorship: The authors would like to thank Dr. Eustace Tameh for his invaluable help in performing this study. The authors would also like to thank Mitsubishi Electric ITE-VIL for sponsoring this work

Terms of use: Copyright © 2006 IEEE. Reprinted from IEEE 64th Vehicular Technology Conference, Fall 2006 (VTC Fall-2006). This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org.

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