UWB short-pulse systems
Reconfigurable Filter Antennas for Pulse Adaptation in UWB Cognitive Radio Systems
... In the underlay approach, secondary users should operate below the noise floor of primary users, and thus severe constraints are imposed on their transmission power (should be less than −42 dBm/MHz). One way to achieve ...
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UWB Communication Systems: A Comprehensive Overview - Free Computer, Programming, Mathematics, Technical Books, Lecture Notes and Tutorials
... techniques. UWB systems may be primarily di- vided into impulse radio (IR) systems and multiband ...Multiband systems offer the advantage of potentially efficient utilisation of spectrum, while ...
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Power Spectral Analysis of Orthogonal Pulse Based TH UWB Signals
... for short range wireless commu- ...by short-duration pulse, which has potential to deliver high data rates with low power spectral densities ...the UWB signal interferes with other radio ...
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Interference Mitigation Technique for Coexistence of Pulse Based UWB and OFDM
... radio systems. It uses very short pulses to spread ...between systems using the same frequency bands at close ...regulatory systems, interference detection and avoidance (DAA) techniques are ...
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Computer Simulation to Generate Gaussian Pulses for UWB Systems
... in short-range, high-capacity wireless communication systems and sensor networks, thanks to advantages such as a very high data rate, low power consumption, and immunity to multipath ...Gaussian ...
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Iterative Frequency-Domain Channel Estimation and Equalization for Ultra-Wideband Systems with Short Cyclic Prefix
... the UWB symbol detection ...(NLOS) UWB channels and simulation results indicate that even with very short CP lengths, it achieves performances that are very close to those of the full CP cases by ...
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Combining OOK with PSM Modulation for Simple Transceiver of Orthogonal Pulse Based TH UWB Systems
... radio systems for high-speed indoor communication strongly depends on the development of pulses, modulation tech- niques, and low-complexity ...(TH-UWB) systems, symbols are transmit- ted using ...
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UWB system based on energy detection of derivatives of the Gaussian pulse
... single pulse in a GFSK system is at most one half of that of a PPM ...In UWB channels, the multipath components are resolvable and not overlapped due to the extremely short pulse dura- ...each ...
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UWB with Pulse Reordering: Securing Ranging against Relay and Physical-Layer Attacks
... shown UWB IR can be used to prevent distance manipulation attacks by using short UWB pulses for precise and secure time-of-flight (ToF) ...single UWB pulse [32]. Instantaneous transmit ...
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Pulse Interval Modulation for Ultra-High Speed IR-UWB Communications Systems
... communication systems place high demands on low power consumption, high-speed trans- mission, and anti-interference ...[1] systems have recently gained increased popularity. Since IR-UWB symbols are ...
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Pulse shaping design for OFDM systems
... circumstances, pulse-shaped OFDM with small overlap- ping factor K should be chosen, basically extending the symbol duration by up to half the symbol interval at maximum, ...OFDM/W-OFDM systems described in ...
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Intra pulse modulation recognition using short time ramanujan Fourier transform spectrogram
... Intra-pulse modulation recognition under negative signal-to-noise ratio (SNR) environment is a research challenge. This article presents a robust algorithm for the recognition of 5 types of radar signals with ...
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High-count-rate 3He position-sensitive detector system: NEUNET-HCR
... The NEUNET system was developed with the objective of obtaining a position resolution (full width at half maximum, FWHM) of less than 2 mm with a length of 1 m. Figure 1 shows a typical PSD system with an effective ...
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A Review of Ultra-Short Soliton Pulse Generation Using InGaAsP/InP Microring Resonator (MRR) Systems
... Internet security becomes an important function in the modern internet service. However, the security technique known as quantum cryptography has been widely used and investigated in many applications, using ...
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Ultra-Wideband Performance of Printed Hexagonal Wide-Slot Antenna with Dual Band-Notched Characteristics
... notched UWB structure. The reference UWB antenna current distributions at the respective notched band centre frequencies, ...reference UWB antenna due to absence of notching ...
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Impact evaluation of conducted UWB transients on loads in power-line networks
... to UWB sources was always a hot topic that has drawn much attention and been exten- sively discussed, ...the UWB transient in low-voltage power network of a building was discussed, where several measures ...
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AN ENHANCED RULE APPROACH FOR NETWORK INTRUSION DETECTION USING EFFICIENT DATA ADAPTED DECISION TREE ALGORITHM
... electromagnetic pulse interference source, UWB- EMP features sharp rise edge, short pulse width, high peak power, and wide frequency band, which is harmful to electronic ...of UWB-EMP ...
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Compact UWB-MIMO Antenna for Portable Devices
... ABSTRACT: A compact printed ultra-wideband (UWB) multiple input–multiple-output (MIMO) antenna system with a size of 35×60 mm 2 operating at a frequencyrange of 3.1–10.6 GHz is proposed. The wideband isolation can ...
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Short-Range UWB Wireless Link in WPAN Scenarios
... on UWB antenna performances and, consequently, system ...called pulse harmonic modulation, that suits wideband, low power data transmission across inductive telemetry links, particularly in the implantable ...
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Short pulse laser interactions with high density plasma
... the short-pulse laser duration ...the short- pulse laser absorption and fast electron transport results in kinetic models being much more computationally intensive than fluid ...
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