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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Journal Article
A Critical Time for Ultra-Wide Band
TL;DR: The technology, its probable application areas, the environmental forces that are constraining and enabling commercialization, and the prospects for short-term growth for UWB services are described.
Proceedings ArticleDOI
Channel division multiple access: The access solution for UWB networks
TL;DR: In this paper, the spectral efficiency performance of channel division multiple access (ChDMA) was analyzed for low duty cycle Impulsive Radio Ultra Wideband (IR-UWB) systems, and it was shown that under certain conditions ChDMA can even outperform CDMA in terms of Shannon's capacity.
Proceedings ArticleDOI
A Fast-Switching Frequency Synthesizer for UWB Applications
Che-Fu Liang,Shen-Iuan Liu +1 more
TL;DR: A fast-switching frequency synthesizer is presented for ultra-wideband MB-OFDM applications that generates three frequency tones with 528 MHz spacing by using single-sideband mixers with Q-enhancement bandpass filters and switched-cascode multiplexers.
Journal ArticleDOI
Research on a scheme of generating ultra-wideband doublet signal based on the cross-gain modulation in a semiconductor optical amplifier
TL;DR: In this paper, the authors proposed a novel scheme for generating ultra-wideband doublet signal based on the cross-gain modulation effect in a semiconductor optical amplifier and an optical source.
Journal ArticleDOI
Crossband Flexible UWB Multiple Access for High-Rate Multipiconet WPANs
TL;DR: A crossband flexible UWB MA scheme for multipiconet WPANs that offers resilience to multiuser interference, can conveniently accommodate various spreading alternatives, enables full multipath diversity, and can effect scalable spectral efficiency.
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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