Title :
Spectrally efficient Ultra Wideband transmission over wireless sensor networks
Author :
Falahati, A. ; Panahi, F.H.
Author_Institution :
Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
This paper addresses a novel spectrally-efficient signal model for Ultra Wideband (UWB)-based wireless sensor systems. Indeed, an optimal auxiliary independent signal (AIS) is proposed to suppress undesired spectral lines using a defined spectral optimization problem. A spectral notching scheme based upon digital filtering to synthesize UWB pulses is also designed to limit the interferences caused by the existing narrowband interferers. Based on the current contribution, different transmission scenarios are presented for sensor communications. Finally, the spectral characteristics and performances are evaluated by numerical results.
Keywords :
radiofrequency interference; ultra wideband communication; wireless sensor networks; current contribution; digital filtering; narrowband interferers; optimal auxiliary independent signal; sensor communications; spectral lines; spectral optimization problem; spectrally efficient ultra wideband transmission; wireless sensor networks; Interference; Power spectral density; Spectral lines; UWB-based sensor network;
Conference_Titel :
Wireless Sensor Systems (WSS 2012), IET Conference on
Conference_Location :
London
Electronic_ISBN :
978-1-84919-625-3
DOI :
10.1049/cp.2012.0609