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Architecture of wireless sensor node using novel ultra-wideband modulation scheme

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2 Author(s)
D'Souza, M. ; Sch. of Inf. Technol. & Electr. Eng., Queensland Univ., Brisbane, Qld., Australia ; Postula, A.

Recently ultra-wideband (UWB) communications has emerged as an alternative to narrowband communications used in wireless sensor networks. One of UWB(s) most attractive feature for wireless sensors is that it can produce high data throughput rates at lower transmission power levels compared to narrow band wireless systems. Current UWB communication systems use narrow time pulse sequences to transmit information. This paper presents a wireless sensor node architecture that uses a UWB data modulation scheme based on pulse shaping. In this paper, the advantages and hardware requirements of the pulse shaping modulation system are compared against a conventional UWB system. The pulse shaping modulation scheme adds more flexibility for data modulation in UWB communication systems. The modulation scheme encodes data in both the timing and frequency spectrum of the transmitted pulse. This lowers interference between UWB and narrowband systems and allow for robust communications to be used by a large number of sensors in a small area.

Published in:

Digital System Design, 2004. DSD 2004. Euromicro Symposium on

Date of Conference:

31 Aug.-3 Sept. 2004

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