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Baseband Equivalent Models and Digital Predistortion for Mitigating Dynamic Continuous-Time Perturbations in Phase-Amplitude Modulation-Demodulation Schemes (Expanded version)
[article]
2017
arXiv
pre-print
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We consider baseband equivalent representation of transmission circuits, in the form of a nonlinear dynamical system S in discrete time (DT) defined by a series interconnection of a phase-amplitude modulator ...
, a nonlinear dynamical system F in continuous time (CT), and an ideal demodulator. ...
Yehuda Avniel for bringing researchers from vastly different backgrounds to work together on the tasks that led to the writing of this paper. ...
arXiv:1510.01705v2
fatcat:gyo7k4booff6ve3mjk5f3dfaim
An FSK and OOK Compatible RF Demodulator for Wake Up Receivers
2015
Journal of Low Power Electronics and Applications
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This RF demodulator, namely Modulated Oscillator for envelOpe Detection (MOOD), is compatible with both FSK and OOK/ASK modulation schemes. ...
This work proposes a novel demodulation circuit to address the implementation of Wake-Up Receivers (Wu-Rx) in Wireless Sensor Nodes (WSN). ...
De Matos for her support in measurement results.
Conflicts of Interest The authors declare no conflict of interest J. Low Power Electron. Appl. 2015, 5 ...
doi:10.3390/jlpea5040274
fatcat:ldgasg6f2vhdpefap4rz4efm7q
IoToF: A Long-Reach Fully Passive Low-Rate Upstream PHY for IoT over Fiber
2019
Electronics
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IoToF will enable monitoring urban areas with scarce and polluted spectrum, industrial areas requiring intrinsic safety, and upstreaming data from IoT devices in remote locations with unfavorable wireless ...
Then, we proposed, implemented and characterized a prototype physical connectivity (PHY) based on fiber Bragg grating (FBG) low-cost acousto-optic modulation at IoT devices and respective optical edge-filtering ...
Neither baseband amplitude on-off keying/amplitude-shift keying (OOK/ASK) nor narrow-band phase-based phase-shift keying (PSK) modulation are not supported by the E/A module. ...
doi:10.3390/electronics8030359
fatcat:nkub6wj7ufdphipg4xdwzwgh2e
Comparing baseband and intermediate frequency FMCW radar receivers
2017
2017 IEEE AFRICON
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Non-linear model analysis In this section the results from the diode voltage limiter non-linear model are presented. ...
(b) Simplified mathematical representation of the modulation scheme with input IF and Tx signals resulting in an IF offset RF output signal. ...
then the sum of input signals v k in is written in its expanded form by plugging Eqs. (A.2.6) and (A.2.10) into Eq. (A.2.4) resulting in Eq. From Eq. ...
doi:10.1109/afrcon.2017.8095543
dblp:conf/africon/MeyerSM17
fatcat:s32av3ekqbeb7p2a3oqkdzyg4i
Environmentally induced noises in an actively mode-locked erbium fibre laser operating in the second-order rational harmonic mode locking regime
2002
Optics Communications
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two consecutive pulses in the train can be measured directly by implementing the time-domain demodulation technique. ...
For a known cavity length variation, we compare the values of the average energy and phase fluctuations that are obtained both theoretically, using the model, and experimentally, through time-domain demodulation ...
The measurement of the phase noise affecting the envelope of optical pulses in a train (or equivalently, the pulse timing jitter) has always benefited from a particular attention in the literature. ...
doi:10.1016/s0030-4018(02)02074-6
fatcat:nie5zrduoncwfgvx4scil2qoye
Recent Developments on Hybrid Time-Frequency Numerical Simulation Techniques for RF and Microwave Applications
2013
Journal of Function Spaces and Applications
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Because of the modulated nature of radio frequency (RF) signals, the corresponding electronic circuits seem to operate in a slow time scale for the aperiodic information and another, much faster, time ...
With these techniques, the aperiodic information dimension is treated in the discrete time domain, while the periodic carrier dimension is processed in the frequency domain, in which the solution is evaluated ...
Taking this into account, ETHB samples the baseband signals in an appropriately slow time rate and assumes a staircase version of both amplitude and phase, which will conduct to a new modulated version ...
doi:10.1155/2013/578326
fatcat:beimpqd5hfgcdnjoviftk3eeyi
Tunable optical delay line based on single-sideband suppressed-carrier modulation
2013
IEEE Photonics Technology Letters
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of digital quadrature amplitude modulations. ...
This thesis is focused on the application of vector processing in the optical domain to radiofrequency signals in two fields of application: optical beamforming, and photonic vector modulation and demodulation ...
Quadrature Amplitude Modulation is a signal in which two carriers shifted in phase by 90 degrees are modulated and the resultant output consists of both amplitude and phase variations. ...
doi:10.1109/lpt.2012.2227697
fatcat:e5uasvwjd5ckvcllvynughtbg4
Compressed Beamforming in Ultrasound Imaging
2012
IEEE Transactions on Signal Processing
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This often results in erroneous parameter extraction, bringing forward the need to enhance the SNR of the low-rate samples. ...
Applying such low-rate sampling schemes to individual transducer elements, which detect energy reflected from biological tissues, is limited by the noisy nature of the signals. ...
We can then expand in a Fourier series, with coefficients (6) where denotes the continuous time Fourier transform (CTFT) of . ...
doi:10.1109/tsp.2012.2200891
fatcat:xskueewpcnhhdloma3upbsm27m
Adaptive equalization
1985
Proceedings of the IEEE
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Linear and nonlinear receiver structures, their steadystate performance and sensitivity to timing phase are presented in some depth in the next part. ...
An attempt is made throughout the paper to describe important principles and results in a heuristic manner, without formal proofs, using simple mathematical notation where possible. ...
A generalized baseband equivalent model such as this can be derived for any linear modulation scheme. ...
doi:10.1109/proc.1985.13298
fatcat:csxa4sag4jes5poyujgwsiqj2e
Analysis on the Effect of Phase Noise on the Performance of Satellite Communication and Measurement System
2023
Symmetry
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According to the theoretical formula of phase noise, this paper analyzes the power law spectral model in the frequency domain and the noise jitter characteristics in the time domain. ...
Using the carrier tracking loop in the measurement system, the frequency domain transfer model of phase noise is established, and typical analysis results are given. ...
the amplitude fluctuation is omitted. φ(t) in the phase term represents all phase and frequency deviations from the nominal frequency f o and phase 2π f o t, which can be called phase perturbations. ...
doi:10.3390/sym15112053
fatcat:xtnnkbtpsnayvhms5fcekjvxpq
RF Impairments in Wireless Transceivers: Phase Noise, CFO, and IQ Imbalance – A Survey
2021
IEEE Access
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However, their imperfections may result in RF impairments, including phase noise (PN), carrier frequency offset (CFO), and in-phase (I) and quadrature-phase (Q) imbalance. ...
In this survey, we present RF-impairment signal models and discuss their impacts. ...
They show that the unconstrained optimization problem resulting from the PN estimation problem suffers from amplitude and phase estimation errors. ...
doi:10.1109/access.2021.3101845
fatcat:ete2cakeerdjrahum3gcuuexwe
A combined phase contrast imaging and heterodyne interferometer system for multiscale fluctuation measurements (invited)
2018
Review of Scientific Instruments
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A novel combined diagnostic capable of measuring multiscale density fluctuations that extend from magnetohydrodynamic (MHD) scales to the lower bound of the electron temperature gradient (ETG) mode has ...
The combined diagnostic was constructed by adding a heterodyne interferometer to the pre-existing phase contrast imaging (PCI) system, both of which measure line-integrated electron-density fluctuations ...
Section 3.5 describes demodulation of the heterodyne interference signal and the distortion of the baseband phase signal that results from demodulator imperfections. ...
doi:10.1063/1.5035413
pmid:30399846
fatcat:hbvib2r3sbbz3praqcodpmvtzm
Information Transmission Using the Nonlinear Fourier Transform, Part III: Spectrum Modulation
2014
IEEE Transactions on Information Theory
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Exploiting the integrability of the nonlinear Schr\"odinger (NLS) equation, a nonlinear frequency-division multiplexing (NFDM) scheme is presented, which directly modulates non-interacting signal degrees-of-freedom ...
In this paper, emphasis is placed on modulation of the discrete component of the nonlinear Fourier transform of the signal and some simple examples of achievable spectral efficiencies are provided. ...
OFDM is conceptually in analogy with the continuous spectrum modulation, where only the spectral amplitudes are modulated. ...
doi:10.1109/tit.2014.2321155
fatcat:wnyrhcro4vfyvascdvlikbksku
Impairment Models for Performance Evaluation of Digital Modulations in the Millimeter Wave Range
2018
Journal of Communication and Information Systems
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amplitude modulation (MQAM) with coherent detection. ...
The developed models are then used in the performance analysis of the M-ary frequency-shift keying (MFSK) modulation with non-coherent detection, and of the M-ary phase-shift keying (MPSK) and Mary quadrature ...
(·) are the amplifier transfer functions in terms of AM-AM (amplitude modulation -amplitude modulation) conversion and AM-PM (amplitude modulation -phase modulation) conversion, respectively [4] , and ...
doi:10.14209/jcis.2018.21
fatcat:uks7t7jbznea7kcm53kfbtt3pe
ALMA Cycle 8 2021 Technical Handbook
2021
Zenodo
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The 180 • phase switching The phase switching capability (see principles in Figure 5 .9) is realized by phase modulation in the LO1 and demodulation in the DTS transmitter module after digitization. ...
The received signal of antenna 2, S 2 , is
modulated by 180 • by the LO1 and demodulated in the DTS transmitter module at each antenna. ...
Suppression of spurious signals and reduction of the effects of DC drifts in the samplers. This is done using phase modulation of the LOs using Walsh patterns. ...
doi:10.5281/zenodo.4612218
fatcat:surzici2xbcajpqdxdmy7dlz5e
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