ERU - 2009

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item: Conference-Extended-Abstract
Comparison of propagation models for fixed WiMAX system based on IEE 802.16-2004
(2009) Amarasinghe, KC; Peiris, KGAB; Thelisinghe, LADMD; Warnakulasuriya, GM; Samarasinghe, ATLK
The study of empirical propagation models for mobile channels has been done extensively, but the applicability of those to a FWA System is not appropriately tested. The models include Hata-Okumura, COSTH1 Hata, Walfisch Ikegami and Erceg. From those, Erceg model seems to be the most suitable. In this paper field measurement taken for the 3.5GHz Fixed WiMAX network in Katubedda, Sri Lanka. Those are used to validate the applicability the above mentioned models in a Sri Lankan sub urban environment.
item: Conference-Extended-Abstract
Software and test tool for fixed WiMAX
(2009) Amarasinghe, KC; Peiris, KGAB; Thelisinghe, LADMD; Wamakulasuriya, GM; Samarasinghe, ATLK
Planning and Optimizing IEEE 802.16d network need lot of effort and man power. In this paper we are presenting a tool which automates several aspects of these processes. This describes the hardware and the software components and telecommunication aspects of the design, and their integration as a complete system. A hardware tool is presented for gathering signal parameters at various location of the network for analyzing purposes. Measurements can be used to optimize the network to maintain better signal quality.