Results 81 to 90 of about 519,749 (200)

UWB-Based Real-Time Indoor Positioning Systems: A Comprehensive Review

open access: yesApplied Sciences
Currently, the process of tracking moving objects and determining their indoor location is considered to be one of the most attractive applications that have begun to see widespread use, especially after the adoption of this technology in some smartphone
Mohammed Faeik Ruzaij Al-Okby   +3 more
doaj   +1 more source

Novel UWB communication pulse design method

open access: yesTongxin xuebao, 2006
Based on the restriction of federal communications commission (FCC) emission mask, the methods of design- ing impulse pulse waveforms for ultra wideband (UWB) communications was investigated.
LIN Zhi-yuan, WEI Ping
doaj   +2 more sources

Capacity of Time-Hopping PPM and PAM UWB Multiple Access Communications over Indoor Fading Channels

open access: yesEURASIP Journal on Wireless Communications and Networking, 2008
The capacity of time-hopping pulse position modulation (PPM) and pulse amplitude modulation (PAM) for an ultra-wideband (UWB) communication system is investigated based on the multipath fading statistics of UWB indoor wireless channels.
T. Aaron Gulliver, Hao Zhang
doaj   +1 more source

Ultra-Wideband Antennas for Wireless Communication Applications

open access: yesInternational Journal of Antennas and Propagation, 2019
A review paper concerning wide-band and ultra-wideband (UWB) antennas used for wireless communication purposes in terms of the materials as well as a numerical analysis is presented.
Tale Saeidi   +4 more
doaj   +1 more source

Novel ultra-wideband microstrip meandered-loop antenna

open access: yesTongxin xuebao, 2005
A novel meandered-loop ultra-wideband antenna was proposed.The antenna was similar in configuration with a conventional wide-slot antenna,however,by employing meandered-loop structure,not only ultra-wideband performance but also compact size could be ...
LV Wen-jun, CHENG Chong-hu, ZHU Hong-bo
doaj   +2 more sources

Performance of MB-OFDM UWB and WiMAX IEEE 802.16e converged radio-over-fiber in PON [PDF]

open access: yes, 2009
Experimental results about the performance of converged radio-over- fiber transmission including multiband- OFDM UWB and WiMAX 802.16e wireless over a passive optical network are reported in this paper. The experimental study indicates that UWB and WiMAX
Morant, Maria   +3 more
core  

Iterative Code Acquisition for DS-UWB Downlink using Multiple-Component Decoders

open access: yes, 2008
Iterative code acquisition schemes employing beneficially chosen higher-order generator polynomials and multiple-component decoders are analysed in terms of the correct detection probability of the direct sequence-ultra-wideband (DS-UWB) downlink.
Won, S.H., Hanzo, L
core   +1 more source

Design and Realization of Ultra-Wideband Differential Amplifiers for M-Sequence Radar Applications

open access: yesSensors
Amplification of wideband high-frequency and microwave signals is a fundamental element within every high-frequency circuit and device. Ultra-wideband (UWB) sensor applications use circuits designed for their specific application.
Miroslav Sokol   +2 more
doaj   +1 more source

UWB wireless coexistence by fibre-based photonic ADC interference monitoring [PDF]

open access: yes, 2008
The interference monitoring of UWB wireless picocell clusters through an in-house fibre installation is proposed and evaluated in a proof-of-concept experiment. UWB clusters enable range extension of UWB technology providing Gbit/s communications in home
Morant, Maria   +3 more
core  

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