نتایج جستجو برای: ultra wideband

تعداد نتایج: 64872  

2006
Aawatif Menouni Hayar

Ultra-Wide Band (UWB) was presented as a promising radio technology. Because of their large bandwidth, UWB networks are supposed able to deliver high data rates at short ranges. But after analyzing measurements many works observed saturation of the number of channel Degrees of Freedom (DoF) versus bandwidth. This motivates the work presented in this paper where we focus on sub space behavior to...

2014
Santanu Kumar Behera

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2012
Ali Imran Najam Yvan Duroc Smail Tedjini

unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

2007
B. A. Sethuraman Frédérique E. Oggier

We describe some constructions of orthonormal lattices in totally real subfields of cyclotomic fields, obtained by endowing their ring of integers with a trace form. We also describe constructions of quaternion division algebras over such fields. Orthonormal lattices and quaternion division algebras over totally real fields find use in wireless networks in ultra wideband communication, and we d...

2005
Katja Schwieger Ernesto Zimmermann Wasim Malik David Edwards

Ultra Wide Band (UWB) communications offers a radically different approach to wireless communication compared to conventional narrow band systems. Global interest in the technology is huge. This white paper reports on the state of the art of UWB wireless technology and highlights key application areas, technological challenges, higher layer protocol issues, spectrum operating zones and future d...

2017
Mongkol Meeloon Sarawuth Chaimool Prayoot Akkaraekthalin

Journal: :IEICE Transactions 2005
Jun-ichi Takada Shinobu Ishigami Juichi Nakada Eishin Nakagawa Masaharu Uchino Tetsuya Yasui

This paper describes the measurement techniques of emissions from UWB devices discussed in ITU-R task group (TG) 1/8 to study the compatibility between ultra-wideband (UWB) devices and radiocommunication services. This paper also provides the background idea behind the measurement methods, as the final output of the discussion, i.e. ITU-R Recommendation, will not contain any citations to the re...

2015
Ender Ayanoglu Joshua Kim

OF THE DISSERTATION xv CHAPTER 1. Ultra-wideband Communication Overview 1 1.

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