Journal ArticleDOI
Impulse radio: how it works
Moe Z. Win,Robert A. Scholtz +1 more
TLDR
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.Abstract:
Impulse radio, a form of ultra-wide bandwidth (UWB) spread-spectrum signaling, has properties that make it a viable candidate for short-range communications in dense multipath environments. This paper describes the characteristics of impulse radio using a modulation format that can be supported by currently available impulse signal technology and gives analytical estimates of its multiple-access capability under ideal multiple-access channel conditions.read more
Citations
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Journal ArticleDOI
A survey on wireless multimedia sensor networks
TL;DR: Existing solutions and open research issues at the application, transport, network, link, and physical layers of the communication protocol stack are investigated, along with possible cross-layer synergies and optimizations.
Journal ArticleDOI
Localization via ultra-wideband radios: a look at positioning aspects for future sensor networks
Sinan Gezici,Zhi Tian,Georgios B. Giannakis,Hisashi Kobayashi,Andreas F. Molisch,Andreas F. Molisch,H.V. Poor,Zafer Sahinoglu +7 more
TL;DR: In this article, theoretical limits for TOA estimation and TOA-based location estimation for UWB systems have been considered and suboptimal but practical alternatives have been emphasized.
Journal ArticleDOI
Cooperative Localization in Wireless Networks
TL;DR: This paper describes several cooperative localization algorithms and quantify their performance, based on realistic UWB ranging models developed through an extensive measurement campaign using FCC-compliant UWB radios, and presents a powerful localization algorithm that is fully distributed, can cope with a wide variety of scenarios, and requires little communication overhead.
Journal ArticleDOI
The ultra-wide bandwidth indoor channel: from statistical model to simulations
TL;DR: A statistical model for the ultra-wide bandwidth (UWB) indoor channel is established based on an extensive measurement campaign in a typical modern office building with 2-ns delay resolution and it is found that the correlation between multipath components is negligible.
Journal ArticleDOI
Channel models for ultrawideband personal area networks
TL;DR: The important differences between UWB channels and narrowband wireless channels are pointed out, especially with respect to fading statistics and time of arrival of multipath components.
References
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Proceedings ArticleDOI
Multiple access with time-hopping impulse modulation
TL;DR: In this paper, a time-hopping modulation format employing impulse signal technology has several features which may make it attractive for multiple-access communications and an estimate of the multiple access capability of a communication system employing this format under ideal propagation conditions is presented.
Book
Digital communication techniques : signal design and detection
TL;DR: This chapter discusses Scalar and Vector Communications Over the Discrete Memoryless Channel, and Coherent Communication with Waveforms, and Convolutional-Coded Digital Communications.
Journal ArticleDOI
Performance considerations of code division multiple-access systems
TL;DR: The performance of code division multiple-access (CDMA) systems is determined using direct-sequence spectral spreading to show the degradation in system performance as a function of the number of users to have a threshold effect.