A node architecture for disaster relief networking


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Hoeksema, F.W. and Heskamp, M. and Schiphorst, R. and Slump, C.H. (2005) A node architecture for disaster relief networking. In: Proceedings of the First IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 8-11 Nov 2005, Baltimore, USA (pp. pp. 577-584).

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Abstract:In this paper we present node architecture for a personal node in a cognitive ad-hoc disaster relief network. This architecture is motivated from the network system requirements, especially single-hop distance and jamming-resilience requirements. It is shown that the power consumption of current-day analog to digital converters (ADCs) limits the channel bandwidth that can be used, both for a baseband processing system and the scanning system. We therefore propose to use a form of frequency hopping time division multiplexing (FH/TDD) system, similar to Bluetooth. However, we propose to use OFDM as modulation scheme instead of GFSK and show that the OFDM symbol length for the frequency range at hand (400-1000 MHz) is consistent with a Bluetooth-alike FH/TDD scheme. We propose to modify the FH/TDD scheme to incorporate a radio-spectrum measurement phase. Based on these measurements carriers in the OFDM-based scheme are selected in such a fashion that legacy users are avoided. In case of too much legacy-user spectral usage hopping patterns may be altered
Item Type:Conference or Workshop Item
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/64651
Official URL:http://dx.doi.org/10.1109/DYSPAN.2005.1542673
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