Results 51 to 60 of about 37,537 (191)
Optimization Based Self-localization for IoT Wireless Sensor Networks [PDF]
, 2018 In this paper we propose an embedded optimization framework for the simultaneous self-localization of all sensors in wireless sensor networks making use of range measurements from ultra-wideband (UWB) signals.
Beuchat, Paul +3 more
core +1 more source
Cyclostationary Feature Detection Based on Compressed Sensing and Wavelet De-Noising
Dianxin kexue, 2015 To improve the vacant spectrum utilization，ultra-wideband spectrum sensing is critical for cognitive radio （CR）as it enables secondary users to dynamically access the unoccupied spectrum bands.However，the fast and accurate spectrum sensing is still a ...
Haifeng Tan +3 more
doaj +2 more sources
Impulse Radio Systems with Multiple Types of Ultra-Wideband Pulses [PDF]
, 2005 Spectral properties and performance of multi-pulse impulse radio ultra-wideband systems with pulse-based polarity randomization are analyzed. Instead of a single type of pulse transmitted in each frame, multiple types of pulses are considered, which is ...
Gezici, Sinan +3 more
core
Parameter Estimation of SAR Signal Based on SVD for the Nyquist Folding Receiver
Sensors, 2018 The Nyquist Folding Receiver (NYFR) is a novel ultra-wideband (UWB) receiver structure that can realize wideband signal monitoring with fewer components.
Tao Li, Qian Zhu, Zengping Chen
doaj +1 more source
Photonic‐assisted one‐third microwave frequency divider
Electronics Letters, 2022 A microwave photonic frequency divider to produce a frequency‐divided microwave signal with its frequency that is one‐third the frequency of the input microwave signal is proposed and experimentally demonstrated.
Yu Zhang +6 more
doaj +1 more source
Ultra-wideband system design, signals and coding
IET Communications, 2012 Ultra-wideband wireless technology has held much promise as a means of delivering very high speed data over short ranges; delivering a plethora of data from dense wireless sensor networks; and exploited signals for location information, amongst a number of other applications.
Allen, Ben +2 more
openaire +1 more source
IEEE Access, 2020 Radio frequency (RF) channelization receiver is one of the most effective methods for processing ultra-wideband RF signals. In this paper, an ultra-wideband microwave photonic channelizer based on coherent optical frequency combs (OFCs) and image-reject ...
Bo Chen +3 more
doaj +1 more source
D-SLATS: Distributed Simultaneous Localization and Time Synchronization
, 2017 Through the last decade, we have witnessed a surge of Internet of Things (IoT) devices, and with that a greater need to choreograph their actions across both time and space. Although these two problems, namely time synchronization and localization, share
Alanwar Amr +7 more
core +1 more source
Ultra-Wideband Radio-Over-Optical Fiber Concepts, Technologies and Applications
IEEE Photonics Journal, 2010 We have developed novel ultra-wideband (UWB) radio-over-optical-fiber (UROOF) concepts and technologies for a number of important in-house applications characterized by a high data rate.
M. Ran, B. I. Lembrikov, Y. Ben Ezra
doaj +1 more source
Hierarchical Multi-Grid OMP for Ultra-Resolution Channel Estimation in THz UM-MIMO Systems
IEEE AccessIn this paper, we propose an ultra-resolution channel estimation scheme for ultra massive multiple input multiple output (UM-MIMO) systems operating in the Terahertz (THz) band.
Akram Najjar +2 more
doaj +1 more source