Journal ArticleDOI
Ultra-wideband wireless systems
G.R. Aiello,G.D. Rogerson +1 more
TLDR
In this article, two UWB multiband systems, frequency hopping and Spectral Keying, have been described, both of which meet the stringent requirements provided by IEEE 802.15.3a.Abstract:
The recent FCC frequency allocation for UWB has generated a lot of interest in UWB technologies. There is 7,500 MHz of spectrum for unlicensed use. The main limitations are provided by the low-power spectral density and by the fact that the transmit signal must occupy at least 500 MHz at whole times. IEEE 802.15.3a is being developed for high-bit-rate PAN applications, and UWB is the most promising technology to support the stringent requirements: 110, 200, and 480 Mb/s. Two UWB multiband systems, frequency hopping and Spectral Keying, have been described in this article. Both systems meet the stringent requirements provided by IEEE 802.15.read more
Citations
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Proceedings ArticleDOI
UWB monocycle and doublet pulses generation in optical domain
TL;DR: In this article, a novel composite approach to generate UWB monocytic and doublet pulses in optical domain is proposed and demonstrated and a simple electrical Gaussian pulse is modulated on optical earlier to generate UWB monocycle and double-t pulse successively.
Journal ArticleDOI
Bandwidth-Tunable Single-Carrier UWB Monocycle Generation Using a Nonlinear Optical Loop Mirror
TL;DR: In this paper, the probe light is split into two parts by the NOLM, and both of them are phase modulated by the pump light due to the cross-phase modulation in the SOA.
Journal ArticleDOI
Demonstration and optimization of an optical impulse radio ultrawideband distribution system using a gain-switched laser transmitter
TL;DR: In this paper, a novel system for the distribution of high-definition video streams in a residential environment is demonstrated, which utilizes impulse radio ultrawideband (IR-UWB) technology integrated with a fiber-based distribution network.
Journal ArticleDOI
Triple band-stop characteristics from an aperture coupled modified Pythagorean tree fractal-based UWB-MIMO antenna integrated with complementary hexagonal spiral defected ground structure
TL;DR: In this article, an aperture-coupled two-port modified Pythagorean tree fractal antenna is modeled and experimentally examined for ultra-wideband applications with triple-band-stop functionality.
Proceedings ArticleDOI
Analog to digital conversion specifications for ultra wide band reception
M.B. Romdhane,P. Loumeau +1 more
TL;DR: The homodyne receiver and precisely the analog to digital converter ADC dimensioning used for UWB communications are presented and the found specifications permit us to conclude on the possible ADC architectures.
References
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Proceedings ArticleDOI
Rapid acquisition for ultra-wideband localizers
TL;DR: This work has developed a method of rapid acquisition that allows two nodes to acquire each other in a fraction of the time afforded by other methods, utilizing a beacon/listener technique using Kasami sequences and divide-and-conquer algorithms.
Proceedings ArticleDOI
Recent advances in ultra wideband communications systems
TL;DR: Three recent system developments are described: an ad hoc wireless UWB communications network for tactical voice and high-speed data communications; a long range UWB system for over-the-water and non line-of-sight voice, data and video communications.
Proceedings ArticleDOI
UWB technology for wireless video networking
M. Ho,L. Taylor,G.R. Aiello +2 more
TL;DR: The characteristics and the advantages of ultra-wideband (UWB) radio technology when combined with a decentralized, priority-driven network architecture for wireless video networking in the home are described.
Proceedings ArticleDOI
Multi-user perspectives in UWB communications networks
TL;DR: In this article, the authors provide an overview of multiplexing techniques and suggest ways in which they can be applied to UWB networks and relative advantages and challenges of each technique are identified in order to understand the suitabilitability of each for use in a multi-piconet WPAN system.
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