Results 81 to 90 of about 1,237,711 (248)

Phase Modulation Side Channels: Jittery JTAG for On-Chip Voltage Measurements

open access: yesTransactions on Cryptographic Hardware and Embedded Systems
Measuring fluctuations of the clock phase was identified as a source of leakage in early electromagnetic side-channel investigations. Despite this, only recently was measuring the clock phase (or jitter) of digital signals (not electromagnetic signals ...
Colin O’Flynn
doaj   +1 more source

Design and Analysis of Three-Phase Three-Level PWM Inverter [PDF]

open access: yes, 2010
Design of three-phase three level PWM inverter and analysis of the output current harmonics are presented in this paper. The three-level inverter is designed to supply three-phase load and it is controlled by FPGA under several modulation techniques ...
Dahono, Pekik Argo
core  

Instrumentation of a high-sensitivity microwave vector detection system for low-temperature applications

open access: yes, 2005
We present the design and the circuit details of a high-sensitivity microwave vector detection system, which is aiming for studying the low-dimensional electron system embedded in the slots of a coplanar waveguide at low temperatures.
Chen, C. L.   +4 more
core   +1 more source

Calibration of a phase-only spatial light modulator for both phase and retardance modulation

open access: yesOptics Express, 2019
Liquid crystal spatial light modulators (SLMs) are usually configured and calibrated for phase modulation. However, as they are variable retarders, they also have application as polarization modulators. We show that conventional phase-only calibrations are insufficient for this purpose, and a separate retardance calibration is needed.
Dai, Y, Antonello, J, Booth, MJ
openaire   +4 more sources

Multi-user Communication in Difficult Interference

open access: yes, 2019
The co-channel interference (CCI) is one of the major impairments in wireless communication. CCI typically reduces the reliability of wireless communication links, but the difficult CCI which is no more or less strong to the desired signals destroys ...
Basnayaka, Dushyantha A.   +1 more
core   +1 more source

Uniform cross phase modulation for nonclassical radiation pulses

open access: yes, 2010
We propose a scheme to achieve a uniform cross phase modulation (XPM) for two nonclassical light pulses and study its application for quantum non-demolition measurements of the photon number in a pulse and for controlled phase gates in quantum ...
Abbou   +43 more
core   +1 more source

Improving radar performance with constant envelope multi-level chirp

open access: yesTehnički Glasnik, 2019
M-level Continuous Phase Chirp Modulation is considered for data transmission. In this article, we would like to propose a new approach to transmitting information with the help of multi-level wave guide signaling. The main problem with the classic chirp
Farhad Bahadori-Jahromi   +1 more
doaj   +1 more source

Flexible digital modulation and coding synthesis for satellite communications [PDF]

open access: yes
An architecture and a hardware prototype of a flexible trellis modem/codec (FTMC) transmitter are presented. The theory of operation is built upon a pragmatic approach to trellis-coded modulation that emphasizes power and spectral efficiency.
Budinger, James   +3 more
core   +1 more source

The Blazhko behaviour of RR Geminorum I - CCD photometric results in 2004

open access: yes, 2004
Extended CCD monitoring of RR Gem revealed that it is a Blazhko type RRab star with the shortest Blazhko period (7.23d) and smallest modulation amplitude (Delta ...
A. Szing   +33 more
core   +1 more source

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