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Cost analysis for an ad hoc extended cellular systems in a rural environment
KTH, Superseded Departments, Signals, Sensors and Systems.
2004 (English)Conference paper (Refereed)
Abstract [en]

This paper applies two different cost models in order to analyze the infrastructure cost of a communication network in which fixed relays are used for an ad hoc extension of a cellular system. The analysis consists of two parts: solving a dimensioning problem and minimizing the investment cost according to one of the cost models, respectively. For the dimensioning problem, the simple system model introduced in [1] is used. Unlike [1], where some approximations are used to obtain an analytical expression of the interference level, the average cell power is computed in this paper though simulations. Due to the simple propagation models assumed, the model is basically suited for a rural environment.

According to the simulation results, the analytical modeling in [1] underestimates the cell radius by up to 10%, which means that the infrastructure costs obtained in [1] for this simple system model are overestimated. When using a linear cost model, the analysis shows that the ad hoc extension reduces the infrastructure cost of a purely cellular system if the ratio between the cost of a base station and that of a wireless relay is at least 34. The use of a non linear model, which takes into account the type of the base station, shows more significant cost reductions, even if the cost ratio is as low as 20. All the evaluations consider only the investment costs and apply to loads up to 500 kbps/km2.

Place, publisher, year, edition, pages
National Category
Computer and Information Science
Research subject
URN: urn:nbn:se:kth:diva-27809OAI: diva2:382602
Affordable Wireless Services and Infrastructure Workshop, 2nd AWSI workshop, , June 2004
QC 20110105Available from: 2011-01-02 Created: 2011-01-02 Last updated: 2011-01-05Bibliographically approved

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Timus, Bogdan
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