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
Ultra-wideband variable signal generator using series shunt switch
TL;DR: In this article, a variable signal generator is proposed to switch between three center frequencies at the lower band, i.e., 3.35 GHz, 3.85 GHz and 4.35GHz.
L-Band SiGe HBT Frequency-Tunable Dual-Bandpass or Dual-Bandstop Differential Amplifiers Using Varactor-Loaded, Stacked LC-Resonators
Kazuyoshi Sakamoto,Yasushi Itoh +1 more
TL;DR: In this article, a varactor-loaded, stacked LC-resonator is used in the output circuit of differential amplifiers for realizing dual-bandpass responses as well as in the series feedback circuit for dualbandstop responses.
Proceedings ArticleDOI
Proposed FDSS UWB communications system
TL;DR: In this article, a proposed 440 Mbps FDSS (frequency division spread spectrum) UWB system is presented and the system downlink capacity is calculated using the free space propagation model specified by the IEEE 802.153a channel modeling committee.
Journal ArticleDOI
Photonic UWB pulse generation and OOK, PPM, BPSK modulation for WDM systems based on twin-core fiber
TL;DR: In this article, a phase modulation to intensity modulation (PM-IM) conversion principle was used to generate multi-wavelength and polarity-reversed ultra-wideband (UWB) monocycle pulses.
Proceedings ArticleDOI
Performance of MMSE Pulse in UWB Communications
Won Mee Jang,Messan Senouvo +1 more
TL;DR: In this article, the authors proposed an algorithm that can be applied to ultra-wideband (UWB) pulse design in an iterative way to minimize the mean square error (MSE) between the desired pulse and the frequency mask.
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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