Journal ArticleDOI
An ultrawideband system architecture for tag based wireless sensor networks
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TLDR
The architecture and performance of a noncoherent low complexity UWB impulse radio based transceiver designed for low data rate, low cost sensor network applications is presented.Abstract:
With the latest improvements in device size, power consumption, and communications, sensor networks are becoming increasingly more popular. There has also been a great increase in the popularity of commercial applications based on ultrawideband (UWB). Impulse radio (IR) based UWB technology utilizes noise-like signal, has potentially low complexity and low cost, is resistant to severe multipath, and has very good time domain resolution allowing for location and tracking applications. In this paper, the architecture and performance of a noncoherent low complexity UWB impulse radio based transceiver designed for low data rate, low cost sensor network applications is presented. The UWB-IR transmitter is based on a delay locked loop (DLL) and UWB monocycle pulse generator. The UWB-IR receiver utilises a noncoherent, energy detection based approach, which makes it largely independent of the shape of the transmit waveform and robust to multipath channels. The test circuits are designed for 0.35 /spl mu/m SiGe BiCMOS technology. This paper presents system simulations results as well as the performance of key functional blocks of the designed UWB application specific integrated circuit (ASIC) transceiver architecture. The simulated power consumption of UWB-IR transceiver circuits is 136 mW with 100% duty cycle with a 3.3 V power supply.read more
Citations
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Journal ArticleDOI
UWB Systems for Wireless Sensor Networks
TL;DR: The IEEE 802.15.4a standard is described, an important system that adopts UWB impulse radio to ensure robust data communications and precision ranging and uses specific modulation, coding, and ranging waveforms that can be detected well by both coherent and noncoherent receivers.
Proceedings Article
A 3-10-Ghz low-noise amplifier with wideband LC-ladder matching network
Aly Ismail,Asad A. Abidi +1 more
TL;DR: In this paper, a SiGe amplifier with on-chip matching network spanning 3-10 GHz was presented, achieving 21dB peak gain, 2.5dB noise figure, and -1dBm input IP3 at 5 GHz, with a 10-mA bias current.
Journal ArticleDOI
Noncoherent ultra-wideband systems
TL;DR: An overview of the state of the art of recent research activities in noncoherent ultra-wideband receiver front ends is provided with a focus on architectures that perform the initial signal processing tasks in the analog domain, such that the receiver does not need to sample the UWB received signals at Nyquist rate.
Journal ArticleDOI
NLOS Mitigation Using Linear Programming in Ultrawideband Location-Aware Networks
S. Venkatesh,R.M. Buehrer +1 more
TL;DR: A novel NLOS-bias mitigation scheme based on LP is presented, that allows us to incorporate NLOS range information into location estimation, but does not allow NLOS bias errors to degrade node-localization accuracy.
Journal ArticleDOI
Ultrawide Bandwidth RFID: The Next Generation?
TL;DR: A survey of current progress in the application of the UWB technology for RFID systems is presented with particular attention to low-complexity solutions for high-definition tag localization.
References
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Journal ArticleDOI
Ultra-wide bandwidth time-hopping spread-spectrum impulse radio for wireless multiple-access communications
Moe Z. Win,Robert A. Scholtz +1 more
TL;DR: Performance of time-hopping spread-spectrum multiple-access systems employing impulse signal technology for both analog and digital data modulation formats under ideal multiple- access channel conditions is estimated.
Journal ArticleDOI
Impulse radio: how it works
Moe Z. Win,Robert A. Scholtz +1 more
TL;DR: The characteristics of impulse radio using a modulation format that can be supported by currently available impulse signal technology are described and analytical estimates of its multiple- access capability under ideal multiple-access channel conditions are given.
Journal ArticleDOI
Ultra-wideband communications: an idea whose time has come
TL;DR: This tutorial overviews the state-of-the-art UWB in channel modeling, transmitters, and receivers of UWB radios, and outlines the research directions and challenges that needs to be overcome.
Book
Principles of Data Conversion System Design
TL;DR: This advanced text and reference covers the design and implementation of integrated circuits for analog-to-digital and digital-toanalog conversion and systematically leads the reader to advanced topics, describing design issues and techniques at both circuit and system level.
Journal ArticleDOI
A precise four-quadrant multiplier with subnanosecond response
TL;DR: Among the most signficant presentations in the 50-year history of the ISSCC, Barrie Gilbert's classic paper has become the fifth most frequently cited JSSC article and the first to be cited over 100 times.