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 ArticleDOI
Photonic-chip-based all-optical ultra-wideband pulse generation via XPM and birefringence in a chalcogenide waveguide
K. Tan,David Marpaung,Ravi Pant,Feng Gao,Enbang Li,Jian Wang,Duk-Yong Choi,Stephen J. Madden,Barry Luther-Davies,Junqiang Sun,Benjamin J. Eggleton +10 more
TL;DR: Results indicate that the proposed photonic-chip-based scheme for all-optical ultra-wideband pulse generation has potential applications in multi-shape, multi-modulation and long-distance UWB-over-fiber communication systems.
Journal ArticleDOI
Electro-Optical Generation and Distribution of Ultrawideband Signals Based on the Gain Switching Technique
Haymen Shams,Aleksandra Kaszubowska-Anandarajah,Philip Perry,Prince M. Anandarajah,Liam P. Barry +4 more
TL;DR: In this paper, the authors demonstrate and compare the generation and distribution of PPM ultrawideband (UWB) signals, based on two different techniques using a gain-switched laser (GSL).
Journal ArticleDOI
On the design of inscribed triangle non‐concentric circular fractal antenna
Raj Kumar,Kalias Sawant +1 more
TL;DR: In this article, the authors presented a new ultra-wideband fractal antenna with CPW-fed, inscribed triangles in non-concentric circles with varied radius offers the excellent bandwidth around 13.54 GHz (span from 1.335 to 14.88 GHz).
Proceedings ArticleDOI
Design of 24 GHz SiGe HBT balanced power amplifier for system-on-a-chip ultra-wideband applications
TL;DR: In this paper, a balanced, three-stage, common-emitter, 24 GHz SiGe HBT power amplifier for ultra wideband applications is described, which has very flat gain response in the frequency band of interest and sharp gain drop outside of the band, which are important considerations for a system on-a-chip UWB application.
Journal ArticleDOI
Towards the Systematic Development of Medical Networking Technology
Oliver Faust,Ravindra Shetty,S. Vinitha Sree,Sripathi Acharya,U. Rajendra Acharya,Eddie Y. K. Ng,Chua Kok Poo,Jasjit S. Suri +7 more
TL;DR: It is argued that with the advancement in communication and networking technologies, economically middle class people and even some rural poor have access to internet and mobile communication systems, and Hospital Digital Networking Technologies (HDNT), such as telemedicine, can be developed to utilize internet, mobile and satellite communication systems to connect primitive rural healthcare centers to well advanced modern urban setups and thereby provide better consultation and diagnostic care to the needy people.
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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