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Coverage costs of one amplify-and-forward relaying in outdorrs urban environment
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. (Radio Communication Systems)
2006 (English)In: Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, IEEE , 2006, 1-5 p.Conference paper (Refereed)
Abstract [en]

The use of fixed relays has previously been shown to enhance the performance of cellular systems, e.g. in terms of improved bit-rate CDFs. Under the assumption that these relays are inexpensive, it has been argued that cellular-relaying architectures can provide high bit-rate services at low infrastructure costs. This paper addresses the question of how inexpensive must a relay be, by converting the performance gains of the relaying architecture into cost constraints. The analysis is numerically exemplified on a study case where 95% downlink outdoor coverage must be provided in an urban environment. The relays are (randomly) placed on lamp-posts along streets. The transmission power, height and gain of the base station antennas, and the complexity of the relaying scheme are used to model the cost-performance trade-off. In this coverage study case, the relay to base station cost ratio must be at most 2 - 15%, depending on the above parameters' values. In the numerical examples, the relaying scheme type has much smaller impact on the cost ratio constraint than the base station antenna height and gain.

Place, publisher, year, edition, pages
IEEE , 2006. 1-5 p.
National Category
Computer and Information Science
Research subject
URN: urn:nbn:se:kth:diva-29818DOI: 10.1109/PIMRC.2006.254035ScopusID: 2-s2.0-44949200133ISBN: 1-4244-0329-4OAI: diva2:398177
International Symposium on Personal, Indoor and Mobile Radio Communications, Helsinki, 11-14 Sept. 2006
QC 20110217Available from: 2011-02-16 Created: 2011-02-16 Last updated: 2011-02-17Bibliographically approved

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Timus, Bogdan
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Communication Systems, CoS
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