Relevant bibliographies by topics / Channel Shift

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Channel Shift'

Author: Grafiati
Published: 5 June 2025
Last updated: 24 June 2025

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Journal articles on the topic "Channel Shift"

1

Wu, Jie, Xiaoping Hong, Jinhao Deng, Hongyu Cui, Dajun Sun, and Shuang Xiao. "Iterative double-differential M-ary phase-shift keying direct-sequence spread-spectrum receiver in underwater acoustic channels." Journal of the Acoustical Society of America 157, no. 6 (2025): 3976–89. https://doi.org/10.1121/10.0036808.

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In the underwater acoustic channel, the conventional M-ary phase-shift keying (MPSK) direct-sequence spread-spectrum (DSSS) systems are sensitive to time-varying Doppler shifts. To address this issue, this paper proposes an iterative multi-channel double-differential MPSK DSSS receiver in which a per-survivor processing (PSP) method is incorporated in a soft-input/soft-output convolutional decoder to jointly estimate the data sequences and the time-varying Doppler shifts for each symbol. This PSP method embeds data-aided Doppler shift estimation within the structure of the Bahl-Cocke-Jelinek-Raviv algorithm, ensuring that the Doppler shift estimation is unaffected by the information bits. To estimate and track Doppler shifts, a symbol-by-symbol cross correlation method is employed, which is then used for dynamic phase compensation using a linear prediction model to enhance decoding performance in time-varying channels. Additionally, a multi-channel diversity combiner using soft information combines the branch metrics from each channel. Numerical simulation results demonstrate that the proposed receiver method exhibits superior performance in time-varying channels. Finally, the performance of the proposed receiver is validated through experiments conducted in shallow-water horizontal channels and deep-sea vertical channels.
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Holdengreber, E., M. Mizrahi, E. Glassner, Y. Koral, S. E. Schacham, and E. Farber. "Phase shift combiner for multi-channel VHF communication." International Journal of Microwave and Wireless Technologies 9, no. 1 (2015): 79–83. http://dx.doi.org/10.1017/s1759078715001464.

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The growing demand for communication systems requires multi-channel solutions. However, the number of antennas in communication systems is dictated by the number of channels in each system which is limited by the available space on a broadcasting platform and by the limited available resources. We have developed a Multi-Channel Phase Control coupler in the VHF frequency range enabling a reduction in the number of antennas to a third of the original setup. The system is based on a phase shifter in a meander stripline geometry connected to each channel individually. The channels are then phase matched simultaneously to a single antenna through a computer-controlled capacitor bank connected to each phase shifter. The system performance shows a low insertion loss of 0.5 dB and a low return loss of −15 dB for the multi-channel setup.
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Starmer, C. F., and K. R. Courtney. "Modeling ion channel blockade at guarded binding sites: application to tertiary drugs." American Journal of Physiology-Heart and Circulatory Physiology 251, no. 4 (1986): H848—H856. http://dx.doi.org/10.1152/ajpheart.1986.251.4.h848.

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Excitable membranes exposed to sodium channel blocking agents (D; local anesthetics and antiarrhythmic drugs) show a progressive reduction of peak sodium current when repetitively depolarized (use dependence). Thus, with repetitive excitation, use dependence reflects a net rightward shift in the balance between unblocked channels (U) and blocked channels (B): U + D in equilibrium with B. The modulated receptor hypothesis (a 7-parameter model) has been proposed to account for this shift and is based on a channel lumen binding site whose affinity varies with channel state and where drug-complexed channels exhibit modified inactivation gate kinetics. Alternatively, we consider use-dependent binding as the result of transient access to a constant-affinity binding site. In this setting, the channel gate conformation is viewed as controlling the flux of drug as it diffuses between drug pools and the binding site. Apparent variation in binding rates is therefore considered the result of variations in the fraction of accessible sites. This guarded receptor hypothesis, with three fewer parameters, is able to predict apparent changes in channel binding and apparent shifts in channel inactivation without incorporating modified gating parameters in drug-complexed channels. Furthermore, with this model one is able to characterize both relaxation kinetics and channel blockade associated with tertiary amines as well as hydrophobic and hydrophilic agents. The pH dependence of repriming rates is utilized to estimate several of the important parameters associated with this simplified hypothesis.
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Yau, Michael C., Robin Y. Kim, Caroline K. Wang, et al. "One drug-sensitive subunit is sufficient for a near-maximal retigabine effect in KCNQ channels." Journal of General Physiology 150, no. 10 (2018): 1421–31. http://dx.doi.org/10.1085/jgp.201812013.

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Retigabine is an antiepileptic drug and the first voltage-gated potassium (Kv) channel opener to be approved for human therapeutic use. Retigabine is thought to interact with a conserved Trp side chain in the pore of KCNQ2–5 (Kv7.2–7.5) channels, causing a pronounced hyperpolarizing shift in the voltage dependence of activation. In this study, we investigate the functional stoichiometry of retigabine actions by manipulating the number of retigabine-sensitive subunits in concatenated KCNQ3 channel tetramers. We demonstrate that intermediate retigabine concentrations cause channels to exhibit biphasic conductance–voltage relationships rather than progressive concentration-dependent shifts. This suggests that retigabine can exert its effects in a nearly “all-or-none” manner, such that channels exhibit either fully shifted or unshifted behavior. Supporting this notion, concatenated channels containing only a single retigabine-sensitive subunit exhibit a nearly maximal retigabine effect. Also, rapid solution exchange experiments reveal delayed kinetics during channel closure, as retigabine dissociates from channels with multiple drug-sensitive subunits. Collectively, these data suggest that a single retigabine-sensitive subunit can generate a large shift of the KCNQ3 conductance–voltage relationship. In a companion study (Wang et al. 2018. J. Gen. Physiol. https://doi.org/10.1085/jgp.201812014), we contrast these findings with the stoichiometry of a voltage sensor-targeted KCNQ channel opener (ICA-069673), which requires four drug-sensitive subunits for maximal effect.
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5

Ye, Zhengmao. "Exploring Impact of Doppler Effect on Time-Varying Multipath Wireless Communication Channels via Model Based Characteristic Analysis." WSEAS TRANSACTIONS ON SIGNAL PROCESSING 20 (December 31, 2024): 145–52. https://doi.org/10.37394/232014.2024.20.15.

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In areas of outdoor wireless communication, the Doppler shift occurs due to the relative motion between the transmitter and receiver. To apply any baseband channel model for multipath propagation, some real-world phenomena must be taken into account, such as the Doppler effect, time dispersion, and multipath scattering. Time dispersion of the radio channel leads to the Intersymbol Interference (ISI) which degrades communication performance. Scattering at diverse angles gives rise to a range of Doppler frequency shifts referred to as the Doppler spectrum. The maximum Doppler shift arises whenever the scattering direction is opposite to the channel trajectory. The Rayleigh or Rician fading distributions of the communication channel are used to characterize the line-of-sight path (LOS) and non-line-of-sight (NLOS) path radio propagation, respectively. Multipath fading causes frequency-selectivity and Doppler shifting causes time-selectivity. Two popular modeling techniques for fading channels are the Filtered White Gaussian Noise and Sum-Of-Sinusoids schemes. The impact of the Doppler effect on wireless communication channel characteristics will be examined using the model based performance analysis.
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DIAZ-OTERO, FRANCISCO J., and PEDRO CHAMORRO-POSADA. "MULTICHANNEL SOLITON COLLISIONS IN STRONGLY DISPERSION MANAGED WDM TRANSMISSION SYSTEMS." Journal of Nonlinear Optical Physics & Materials 21, no. 03 (2012): 1250034. http://dx.doi.org/10.1142/s0218863512500348.

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We study the collision-induced timing jitter of optical solitons in dispersion managed wavelength-division multiplexed communication systems. The work presented here is an extension of previous analyzes of two-pulse interactions to the multiple channel case. The numerical study is based on a system of ordinary differential equations obtained using a variational approach that models the evolution of the main parameters of the propagating pulses. We explain the mechanism associated with inter-channel interactions and study the evolution of multiplexed soliton trains and the resulting frequency shift induced jitter as the map strength is varied. The results obtained indicate a strong dependence of the frequency shifts on the position of the channel within the multiplex and the existence of patterns for the frequency shifts that depend on the parity of the number of channels.
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Estacion, Mark, and Stephen G. Waxman. "Nonlinear effects of hyperpolarizing shifts in activation of mutant Nav1.7 channels on resting membrane potential." Journal of Neurophysiology 117, no. 4 (2017): 1702–12. http://dx.doi.org/10.1152/jn.00898.2016.

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The Nav1.7 sodium channel is preferentially expressed within dorsal root ganglion (DRG) and sympathetic ganglion neurons. Gain-of-function mutations that cause the painful disorder inherited erythromelalgia (IEM) shift channel activation in a hyperpolarizing direction. When expressed within DRG neurons, these mutations produce a depolarization of resting membrane potential (RMP). The biophysical basis for the depolarized RMP has to date not been established. To explore the effect on RMP of the shift in activation associated with a prototypical IEM mutation (L858H), we used dynamic-clamp models that represent graded shifts that fractionate the effect of the mutation on activation voltage dependence. Dynamic-clamp recording from DRG neurons using a before-and-after protocol for each cell made it possible, even in the presence of cell-to-cell variation in starting RMP, to assess the effects of these graded mutant models. Our results demonstrate a nonlinear, progressively larger effect on RMP as the shift in activation voltage dependence becomes more hyperpolarized. The observed differences in RMP were predicted by the “late” current of each mutant model. Since the depolarization of RMP imposed by IEM mutant channels is known, in itself, to produce hyperexcitability of DRG neurons, the development of pharmacological agents that normalize or partially normalize activation voltage dependence of IEM mutant channels merits further study. NEW & NOTEWORTHY Inherited erythromelalgia (IEM), the first human pain disorder linked to a sodium channel, is widely regarded as a genetic model of neuropathic pain. IEM is produced by Nav1.7 mutations that hyperpolarize activation. These mutations produce a depolarization of resting membrane potential (RMP) in dorsal root ganglion neurons. Using dynamic clamp to explore the effect on RMP of the shift in activation, we demonstrate a nonlinear effect on RMP as the shift in activation voltage dependence becomes more hyperpolarized.
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Wang, Laihe, Yueli Li, Wu Wang, and Daoxiang An. "Moving Target Indication for Dual-Channel Circular SAR/GMTI Systems." Sensors 20, no. 1 (2019): 158. http://dx.doi.org/10.3390/s20010158.

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In a dual-channel circular synthetic aperture radar (CSAR) and ground moving target indication (GMTI) system, the antenna baseline is not parallel with the flight path due to a yaw angle. The angle causes a varying group-phase shift between the dual-channel signals and therefore degrades the correlation between the image pair. Therefore, the group-phase shift needs to be removed before channel equalization. To resolve the problem, the interferometric phase term was deduced and analyzed based on the geometry of a dual-channel CSAR system. Then, the varying phase term with respect to the Doppler frequency and the varying group-phase shift over the range were compensated for in the channel registration. Furthermore, blind channel equalization, including two-dimensional calibration and amplitude equalization, was applied to eliminate the amplitude and residual phase differences between the channels. Finally, the amplitude image obtained using a displaced phase center antenna (DPCA) was multiplied by the phase image obtained with along-track interferometry (ATI) to detect moving targets. The experimental results verified the effectiveness of the method for both uniform and non-uniform clutter suppression.
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Vassilev, P. M., R. W. Hadley, K. S. Lee, and J. R. Hume. "Voltage-dependent action of tetrodotoxin in mammalian cardiac myocytes." American Journal of Physiology-Heart and Circulatory Physiology 251, no. 2 (1986): H475—H480. http://dx.doi.org/10.1152/ajpheart.1986.251.2.h475.

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Single Na+ channel currents have been examined in isolated guinea pig ventricular myocytes using the patch-clamp technique. The effects of lidocaine, extracellular calcium [(Ca)o], and tetrodotoxin on patch Na+ channel availability were assessed using ensemble averages of Na+-channel openings during depolarizing test potential steps from 7 to 10 different patch-holding potentials in each cell-attached patch. In six control patches, the potential for 50% channel availability (Vh) was -15 mV (relative to an average resting membrane potential of -80 mV). Exposure of patches to either lidocaine or elevated (Ca)o produced the expected shifts in Vh [average -22 mV for lidocaine and +10 mV for 6 mM (Ca)o]. Exposure of patches to tetrodotoxin (0.5 microM or 1.0 microM) produced a dose-dependent hyperpolarizing shift of Vh (average -10 and -17 mV) compared with control patches. The hyperpolarizing shift by tetrodotoxin was observed with pulses applied at frequencies of 1.0 or 0.067 Hz. In agreement with earlier maximal upstroke velocity studies in the same preparation, we conclude that block of ventricular Na+ channels by tetrodotoxin exhibits genuine steady-state voltage dependence.
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Leipziger, Jens, Gordon G. MacGregor, Gordon J. Cooper, Jason Xu, Steven C. Hebert, and Gerhard Giebisch. "PKA site mutations of ROMK2 channels shift the pH dependence to more alkaline values." American Journal of Physiology-Renal Physiology 279, no. 5 (2000): F919—F926. http://dx.doi.org/10.1152/ajprenal.2000.279.5.f919.

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Close similarity between the rat native low-conductance K+ channel in the apical membrane of renal cortical collecting duct principal cells and the cloned rat ROMK channel strongly suggest that the two are identical. Prominent features of ROMK regulation are a steep pH dependence and activation by protein kinase A (PKA)-dependent phosphorylation. In this study, we investigated the pH dependence of cloned renal K+ channel (ROMK2), wild-type (R2-WT), and PKA site mutant channels (R2-S25A, R2-S200A, and R2-S294A). Ba2+-sensitive outward whole cell currents (holding voltage −50 mV) were measured in two-electrode voltage-clamp experiments in Xenopus laevisoocytes expressing either R2-WT or mutant channels. Intracellular pH (pHi) was measured with pH-sensitive microelectrodes in a different group of oocytes from the same batch on the same day. Resting pHi of R2-WT and PKA site mutants was the same: 7.32 ± 0.02 ( n = 22). The oocytes were acidified by adding 3 mM Na butyrate with external pH (pHo) adjusted to 7.4, 6.9, 6.4, or 5.4. At pHo 7.4, butyrate led to a rapid (τ: 163 ± 14 s, where τ means time constant, n= 4) and stable acidification of the oocytes (ΔpHi0.13 ± 0.02 pH units, where Δ means change, n = 12). Intracellular acidification reversibly inhibited ROMK2-dependent whole cell current. The effective acidic dissociation constant (p K a) value of R2-WT was 6.92 ± 0.03 ( n = 8). Similarly, the effective p K a value of the N-terminal PKA site mutant R2-S25A was 6.99 ± 0.02 ( n = 6). The effective p K a values of the two COOH-terminal PKA site mutant channels, however, were significantly shifted to alkaline values; i.e., 7.15 ± 0.06 ( n = 5) for R2-S200A and 7.16 ± 0.03 ( n = 8) for R2-S294A. The apparent ΔpH shift between the R2-WT and the R2-S294A mutant was 0.24 pH units. In excised inside-out patches, alkaline pH 8.5 activated R2-S294A channel current by 32 ± 6.7%, whereas in R2-WT channel patches alkalinzation only marginally increased current by 6.5 ± 1% ( n = 5). These results suggest that channel phosphorylation may substantially influence the pH sensitivity of ROMK2 channel. Our data are consistent with the hypothesis that in the native channel PKA activation involves a shift of the pKa value of ROMK channels to more acidic values, thus relieving a H+-mediated inhibition of ROMK channels.
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Dissertations / Theses on the topic "Channel Shift"

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Chow, Mable Man Chee. "Low-complexity code shift keying over the wireless channel." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ38623.pdf.

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Zettas, Spiridon. "Adaptive averaging channel estimation for DVB-T2 systems." Thesis, Brunel University, 2018. http://bura.brunel.ac.uk/handle/2438/16581.

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In modern communication systems, the rate of transmitted data is growing rapidly. This leads to the need for more sophisticated methods and techniques of implementation in every block of the transmitter-receiver chain. The weakest link in radio communications is the transmission channel. The signal, which is passed through it, suffers from many degrading factors like noise, attenuation, diffraction, scattering etc. In the receiver side, the modulated signal has to be restored to its initial state in order to extract the useful information. Assuming that the channel acts like a filter with finite impulse, one has to know its coefficients in order to apply the inverse function, which will restore the signal back to its initial state. The techniques which deal with this problem are called channel estimation. Noise is one of the causes that degrade the quality of the received signal. If it could be discarded, then the process of channel estimation would be easier. Transmitting special symbols, called pilots with known amplitude, phase and position to the receiver and assuming that the noise has zero mean, an averaging process could reduce the noise impact to the pilot amplitudes and thus simplify the channel estimation process. In this thesis, a novel channel estimation method based on noise rejection is introduced. The estimator takes into account the time variations of the channel and adapts its buffer size in order to achieve the best performance. Many configurations of the estimator were tested and at the beginning of the research fixed size estimators were tested. The fixed estimator has a very good performance for channels which could be considered as stationary in the time domain, like Additive White Gaussian Noise (AWGN) channels or slowly time-varying channels. AWGN channel is a channel model where the only distorting factor is the noise, where noise is every unwanted signal interfering with the useful signal. The properties of the noise are that it is additive, which means that the noise is superimposed on the transmitted signal, it is white so the power density is constant for all frequencies, and it has a Gaussian distribution in the time domain with zero mean and variance σ2=N. A slowly time varying channel refers to channel with coherence time larger than the transmitted symbol duration. The performance of a fixed size averaging estimator in case of fast time-varying channels is subject to the buffering time. When the buffering time is smaller or equal to a portion of the coherence time the averaging process offers better performance than the conventional estimation, but when the buffering time exceeds this portion of the coherence time the performance of the averaging process degrades fast. So, an extension has been made to the averaging estimator that estimates the Doppler shift and thus the coherence time, where the channel could be assumed as stationary. The improved estimator called Adaptive Averaging Channel Estimator (AACE) is capable to adjust its buffer size and thus to average only successive Orthogonal Frequency Division Multiplexing (OFDM) symbols that have the same channel distortions. The OFDM is a transmission method where instead of transmitting the data stream using only on carrier, the stream is divided into parallel sub-streams where the subcarriers conveying the sub-streams are orthogonal to each other. The use of the OFDM increases the symbol duration making it more robust against Inter-Symbol Interference (ISI), which the interference among successive transmitted symbols, and also divides the channel bandwidth into small sub-bandwidths preventing frequency selectivity because of the multipath nature of the radio channel. Simulations using the Rayleigh channel model were performed and the results clearly demonstrate the benefits of the AACE in the channel estimation process. The performance of the combination of AACE with Least Square estimation (AACE-LS) is superior to the conventional Least Square estimation especially for low Doppler shifts and it is close to the Linear Minimum Mean Square Error (LMMSE) estimation performance. Consequently, if the receiver has low computational resources and/or the channel statistics are unknown, then the AACE-LS estimator is a valid choice for modern radio receivers. Moreover, the proposed adaptive averaging process could be used in any OFDM system based on pilot aided channel estimation. In order to verify the superiority of the AACE algorithm, quantitative results are provided in terms of BER vs SNR. It is demonstrated that AACE-LS is 7dB more sensitive than the LS estimator.
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Haghdad, Mehdi, and Kamilo Feher. "ADVANCE PRACTICAL CHANNEL SIMULATORS FOR LEO SATELLITE CHANNELS WITH SELECTIVE FADING AND DOPPLER SHIFTS." International Foundation for Telemetering, 2001. http://hdl.handle.net/10150/607588.

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International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>Dynamic hardware and software schemes for trajectory based simulation of LEO satellite channel are presented and evaluated. The simulation models are based on the practical LEO satellite channels and change dynamically with the trajectory using the latitude and longitude of the LEO satellite as input. The hardware simulator is consisted of a trajectory based selective fade generator, a trajectory based Doppler shifter, trajectory based time shadowing simulator and a standard channel for addition of noise, ACI and CCI. A FQPSK modulated signal is passed through a trajectory based dynamic fade generator and the spectrum is distorted. Then the resulting signal is exposed to a trajectory based dynamic Doppler Shifter, simulating the passage of the satellite overhead. Then the proper AWGN, ACI or CCI is added to the signal. At the final stage the signal is passed through a trajectory based time Shadowing simulator. The software simulator is a dynamic real time simulator written in MatLab and its structure is similar to the hardware simulator.
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Fofanah, Ibrahim, and Wannaw Assegu. "Delay Spread Characterization of the Aeronautical Channel." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581653.

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ITC/USA 2012 Conference Proceedings / The Forty-Eighth Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2012 / Town and Country Resort & Convention Center, San Diego, California<br>Radio transmission channel influences greatly the quality of transmitted voice and data signal in terms of data rate and robustness. This degradation is as a result of many factors, notable amongst them are having multiple replica of the transmitted signal at the receiver (multipath), changes of frequency as a result of the movement of the aircraft (Doppler shift) and noise. This paper characterizes the scattered components of the aeronautical channel in terms of delay spread. Geometric representation is used to derive expressions for the maximum delay spread using the 2-ray model and the three dimensional model of the scattered path. Furthermore, the delay and Doppler frequencies are described as a function of the horizontal distance to the specular reflection point between a ground station and a test article. The simulated results are compared to measured data of related articles and the value of the maximum delay spread is compared with the proposed intersymbol guard band for Orthogonal Frequency Division Multiplexing (OFDM) in the Integrated Network Enhanced Telemetry (iNET) program to see if this proposition can be adapted to the aeronautical channel.
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Davidson, H. D. "A reliable data channel for underwater communications using phase shift keying." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233423.

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Alsharekh, Mohammed Fahad. "Transform domian/cyclic code shift keying system on an urban multipath channel." Ohio : Ohio University, 1998. http://www.ohiolink.edu/etd/view.cgi?ohiou1177003745.

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Long, Christopher C. "Data Processing for NASA's TDRSS DAMA Channel." International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/611474.

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International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California<br>Presently, NASA's Space Network (SN) does not have the ability to receive random messages from satellites using the system. Scheduling of the service must be done by the owner of the spacecraft through Goddard Space Flight Center (GSFC). The goal of NASA is to improve the current system so that random messages, that are generated on board the satellite, can be received by the SN. The messages will be requests for service that the satellites control system deems necessary. These messages will then be sent to the owner of the spacecraft where appropriate action and scheduling can take place. This new service is known as the Demand Assignment Multiple Access system (DAMA).
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Shaw, Christopher. "Adjacent Channel Interference for Turbo-Coded APSK." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606238.

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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California<br>A study of the effects of interference caused by adjacent channels on the performance of turbo-coded 16- and 32-APSK. Included in our discussion is the spectral regrowth in the nonlinear power amplifier when driven by a non-constant envelope modulation. Ultimately, we present a set of channel spacing guidelines when using turbo-coded APSK for aeronautical telemetry.
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Ekanthalingam, Ravikanth. "Amplitude Estimation of Minimum Shift Keying in the presence of Co-channel interference." Ohio University / OhioLINK, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1107802525.

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Mwangi, Patricia A. W., Amr Haj-Omar, and Kishan Montaque. "SIMULATION OF THE AERONAUTICAL RADIO CHANNEL FOR TELEMETRY APPLICATIONS." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604033.

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ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, California<br>The aeronautical channel is an air to ground channel characterized by multipath, high doppler shifts, Rayleigh fading and noise. Use of a channel sounder ensures proper estimation of the parameters associated with the impulse response of the channel. These estimates help us to characterize the radio channels associated with aeronautical telemetry. In order to have a satisfactory channel characterization, the amplitudes, phase shifts and delays associated with each multipath component in the channel model must be determined.
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Books on the topic "Channel Shift"

1

Yu, John. Cochannel and adjacent-channel interference in nonlinear minimum-shift-keyed satellite system. National Aeronautics and Space Administration, 1995.

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United States. National Aeronautics and Space Administration., ed. Cochannel and adjacent-channel interference in nonlinear minimum-shift-keyed satellite system. National Aeronautics and Space Administration, 1995.

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Yu, John. Cochannel and adjacent-channel interference in nonlinear minimum-shift-keyed satellite system. National Aeronautics and Space Administration, 1995.

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Yu, John. Cochannel and adjacent-channel interference in nonlinear minimum-shift-keyed satellite system. National Aeronautics and Space Administration, 1995.

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P, Osborne William, and United States. National Aeronautics and Space Administration., eds. On the performance of Trellis coded modulation with octal phase shift keying over the TDRSS channel. National Aeronautics and Space Administration, 1993.

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Chandramani, Nina. Regulation and pharmacology of cardiac K channels: Modulation by internal sodium of inward rectifier K channel and drug-induced positive shift in voltage-dependence of transient outward K channel in canine ventricular myocytes. [Columbia University], 1992.

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Conka, Tahir. Performance analysis of noncoherent differential phase shift keying using Post-Detection Selection Combining over a Rayleigh fading channel. Naval Postgraduate School, 1998.

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Maselli, Christopher P. N. Reality shift: They changed the future. Zonderkidz, 2002.

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Barton, Carol June. Vision shifts. Popular Kinetics Press], 1998.

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United States. National Aeronautics and Space Administration., ed. 8-PSK signaling over non-linear satellite channels: A thesis ... New Mexico State Universty, 1996.

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Book chapters on the topic "Channel Shift"

1

Baggen, Stan, Vladimir Balakirsky, Dee Denteneer, et al. "Entropy of a bit-shift channel." In Institute of Mathematical Statistics Lecture Notes - Monograph Series. Institute of Mathematical Statistics, 2006. http://dx.doi.org/10.1214/lnms/1196285828.

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Li, Hao, Mutallip Mamut, Nurbiya Yadikar, Yali Zhu, and Kurban Ubul. "Channel Enhanced Temporal-Shift Module for Efficient Lipreading." In Biometric Recognition. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-86608-2_52.

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Hajra, Suvadeep, Sayandeep Saha, Manaar Alam, and Debdeep Mukhopadhyay. "TransNet: Shift Invariant Transformer Network for Side Channel Analysis." In Progress in Cryptology - AFRICACRYPT 2022. Springer Nature Switzerland, 2022. http://dx.doi.org/10.1007/978-3-031-17433-9_16.

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Hasegawa, Kazuyoshi. "Studies on qualitative and quantitative prediction of meander channel shift." In Water Resources Monograph. American Geophysical Union, 1989. http://dx.doi.org/10.1029/wm012p0215.

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Nam, Nguyen Tu, and Hiroki Takahashi. "Efficient Continuous Sign Language Recognition with Temporal Shift and Channel Attention." In Lecture Notes in Computer Science. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-74183-8_25.

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Saitoh, Yuichi, Ikuyo Ibe, and Hideki Imai. "Peak-shift and bit error-correction with channel side information in runlength-limited sequences." In Applied Algebra, Algebraic Algorithms and Error-Correcting Codes. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/3-540-56686-4_52.

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Yu, Shicheng, and Shitong Wei. "Synchronous Vibration Suppression of MSCMG Using a Novel Dual-Channel Phase-Shift Notch Filter." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6613-2_215.

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Noorbasha, Sayedu Khasim, and Gnanou Florence Sudha. "Electrical Shift and Linear Trend Artifacts Removal from Single Channel EEG Using SWT-GSTV Model." In Advances in Intelligent Systems and Computing. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7088-6_43.

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Dhar, Rajarshi, Payel Halder, and Arpan Deyasi. "Calculating Threshold Voltage Shift for Shallow Implanted Short-Channel MOSFET in Presence of High-K Dielectric." In Lecture Notes in Electrical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5546-6_37.

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Sangeetha, M., Toshiba Chamoli, and P. Vijayakumar. "BER Performance Analysis of Short Reference Differential Chaos Shift Keying Scheme Using Various Maps Over Different Channel Conditions." In Wireless Communication Networks and Internet of Things. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8663-2_21.

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Conference papers on the topic "Channel Shift"

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Handa, Yudai, Kosuke Tamura, Hiroya Hayakawa, Riku Tanaka, Jaesang Cha, and Chang-Jun Ahn. "Maximum Doppler Shift Identification using Decision Feedback Channel Estimation." In 2024 IEEE 29th Asia Pacific Conference on Communications (APCC). IEEE, 2024. https://doi.org/10.1109/apcc62576.2024.10768073.

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Cai, Tianyang, Junbiao Pang, and Jiaxin Deng. "Solving Distribution Shift in Quantization-Aware Training via Channel-Wise Standardization Distillation." In 2024 China Automation Congress (CAC). IEEE, 2024. https://doi.org/10.1109/cac63892.2024.10865787.

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Ma, Zhanxi, Jianzhe Xue, Jiaxin Li, Yi Yuan, Xiaoyu Liu, and Haibo Zhou. "Leveraging OTFS Modulation for High Doppler Shift Channel in Satellite Vehicular Networks." In 2024 International Conference on Future Communications and Networks (FCN). IEEE, 2024. https://doi.org/10.1109/fcn64323.2024.10985535.

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Agrahari, Abhishek, Mandar R. Nalavade, and Gaurav S. Kasbekar. "Channel, Doppler Frequency Shift, and Velocity Estimation in UAV Systems with mmWave Communication Links." In 2025 International Conference on Information Networking (ICOIN). IEEE, 2025. https://doi.org/10.1109/icoin63865.2025.10992991.

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Lesnov, Ilya V., and Vyacheslav F. Vdovin. "Phase-shift keying for THz data channel." In Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications, edited by Oleg A. Romanovskii and Yurii V. Kistenev. SPIE, 2020. http://dx.doi.org/10.1117/12.2580830.

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Rosnes, Eirik, Angela I. Barbero, and Ø. yvind Ytrehus. "Coding for a Bit-Shift Channel with Applications to Inductively Coupled Channels." In GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference. IEEE, 2009. http://dx.doi.org/10.1109/glocom.2009.5426080.

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Nakahara, Hiroki. "2n+1-valued SSS-Net: Uniform Shift, Channel Sparseness, and Channel Shuffle." In 2020 IEEE 50th International Symposium on Multiple-Valued Logic (ISMVL). IEEE, 2020. http://dx.doi.org/10.1109/ismvl49045.2020.000-5.

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Nakahara, Hiroki. "2n+1-valued SSS-Net: Uniform Shift, Channel Sparseness, and Channel Shuffle." In 2020 IEEE 50th International Symposium on Multiple-Valued Logic (ISMVL). IEEE, 2020. http://dx.doi.org/10.1109/ismvl49045.2020.000-5.

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Cai, Guofa, Lin Wang, and Tingting Huang. "Channel capacity of M-ary Differential Chaos Shift Keying modulation over AWGN channel." In 2013 13th International Symposium on Communications and Information Technologies (ISCIT). IEEE, 2013. http://dx.doi.org/10.1109/iscit.2013.6645829.

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Akbari, M. H., S. A. Asaee, and R. Roohi. "Modeling of a Micro-Channel Water-Gas Shift Reactor." In ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels collocated with 3rd Joint US-European Fluids Engineering Summer Meeting. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30241.

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Hydrogen purification through water-gas shift (WGS) is a favored option in fuel processing for hydrogen fuel cells. A three-dimensional single channel model is developed to simulate the behavior of a water-gas shift micro reactor. The flow regime is assumed to be steady and laminar; furthermore, it is presumed that the walls are isothermal. A water-gas shift reaction rate model is utilized to simulate the surface reaction on Pt/TiO2 catalyst. The gas feed composition is taken as the efflux of a typical auto-thermal reforming (ATR) reactor. A parametric study is conducted to investigate the effect of gas feed temperature, gas space velocity and channel length on water-gas shift micro reactor performance. The study resulted in an optimum water-gas shift micro reactor design. It should be noted that a water-gas shift micro reactor is an essential part of a reactor train to remove carbon monoxide from a hydrogen rich mixture. Such a mixture can be used as fuel for a PEM fuel cell in portable devices. The results of these simulations revealed that the optimum reactor consists of a square cross section channel with 100 μm hydraulic diameter, 20 mm length, space velocity of 1000 h−1 and gas feed temperature of 270°C. The carbon monoxide mole fraction in the efflux is in a range suitable for a typical preferential oxidation (PROX) reactor.
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Reports on the topic "Channel Shift"

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Peavey, David, and Ernest Tsui. Performance of M-ary Orthogonal Continuous Phase FSK (Frequency Shift Keying) for a Trans-Ionospheric Time-Varying Frequency-Selective Channel. Defense Technical Information Center, 1985. http://dx.doi.org/10.21236/ada165318.

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Fringuellotti, Fulvia, and Thomas Kroen. Payout Restrictions and Bank Risk-Shifting. Federal Reserve Bank of New York, 2024. http://dx.doi.org/10.59576/sr.1123.

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What are the effects of payout restrictions on bank risk-shifting? To answer this question, we exploit the restriction policies imposed during the Covid-crisis on US banks as a natural experiment. Using a high-frequency differences-in-differences empirical strategy, we show that, when share buybacks are banned and dividends restricted, banks’ equity prices fall while their CDS spreads and bond yields decline. These results indicate that payout restrictions shift risk from debtholders into equityholders. Consistent with a risk-shifting channel, we find that these effects revert once restrictions are lifted. Moreover, banks that are ex-ante more reliant on share buybacks than dividends in their payout policies, decrease risk-taking relative to banks that are ex ante more dividends reliant, with those effects reverting when the restrictions are relaxed. These results indicate that payout and risk-taking choices are complementary and that regulatory payout restrictions endogenously affect bank risk-shifting incentives.
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Nava Marron, Sofia Gabrielle. Exploring Gender Stereotypes in Alcohol Marketing Across Decades. Florida International University, 2025. https://doi.org/10.25148/fiuurj.3.1.11.

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This study examines the evolution of gender stereotypes and emerging gender roles in alcohol marketing over the past century, with a distinctive methodological approach, analyzing advertisements spanning 100 years. By incorporating LGBTQ+ representations alongside traditional gender portrayals, this research provides a comprehensive historical perspective on how advertising strategies have shaped and responded to societal changes. The study employs a detailed content analysis of alcohol advertisements from the 1920s to the present, focusing on emotional appeal, projected values, geographic targeting, psychographics, and distribution channels. By tracing these elements across different periods, the research uncovers how gender roles in alcohol marketing have evolved from rigid stereotypes to more nuanced, inclusive approaches. Findings indicate a shift from overtly gendered messaging, where alcohol was marketed through hyper-masculine or feminine imagery, to contemporary strategies emphasizing lifestyle aspirations and inclusivity. While historical ads reinforced traditional gender norms, modern campaigns increasingly cater to diverse identities, reflecting broader societal shifts. This research highlights the influential role of alcohol advertising in shaping consumer behavior and gender perceptions. Understanding these shifts is crucial for marketers and policymakers seeking to promote responsible and equitable marketing practices in an evolving social landscape.
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Kugler, Richard L., and Linton Wells II. Strategic Shift: Appraising Recent Changes in U.S. Defense Plans and Priorities. Defense Technical Information Center, 2013. http://dx.doi.org/10.21236/ada590470.

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Johnson, Paul. Tax changes could point to a policy shift ahead of the election. The IFS, 2024. http://dx.doi.org/10.1920/co.ifs.2024.0558.

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Bristow, Laurence. Modelling Reserve Demand with Deposits and the Cost of Collateral. Reserve Bank of Australia, 2024. http://dx.doi.org/10.47688/rdp2024-08.

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The RBA controls short-term interest rates by offering to lend as many reserves as banks demand at a rate close to its target for monetary policy. At this rate, banks' demand drives the amount of reserves the RBA supplies and subsequently the size of its balance sheet. I estimate a substantial increase in Australian banks' reserve demand since the COVID-19 pandemic. I find an increase in banking system deposits explains a large part of the increase in reserve demand through an associated shift to the right in Australian banks' reserve demand curve. The link between deposits and reserve demand suggests banks are willing to pay for the convenience of holding additional reserves to manage payments between depositors, or that banks hold reserves against deposits as a precaution in case of liquidity stress. The value of collateral also shifts banks' reserve demand curve as it changes the price at which banks can fund reserves through the repo market. The role of collateral in explaining the increase in banks' reserve demand is likely small as its value is little changed since the pandemic.
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Perrault, Anne, and Stephen Leonard. The Green Climate Fund: Accomplishing a Paradigm Shift? Rights and Resources Initiative, 2017. http://dx.doi.org/10.53892/mkmz2578.

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The Green Climate Fund (GCF), established in 2010 at the 16th Conference of Parties (COP16) under the United Nations Framework Convention on Climate Change (UNFCCC), is now the world’s largest climate financing institution. It has a current investment portfolio of 43 approved projects totaling around US$2 billion, and has 48 Accredited Entities (AEs) to support implementation, including UN agencies, banks, NGOs, and private companies. Through its investments, the GCF aims to achieve a paradigm shift in developing countries, toward low-emissions development and climate resilience. GCF investments must indicate whether and how they could impact Indigenous Peoples, local communities, and women who are most at risk from the adverse effects of climate change (e.g. via environmental and social management plans). These goals, however, are currently being challenged by inadequacies in the Fund’s policies and frameworks. GCF safeguards fail to recognize the critical contributions of rural peoples to the maintenance of ecosystem services that are essential to international climate and development objectives, and to offer adequate protection for their land and resource rights. Drawing on international standards and GCF policy documents, this report traces the adequacy and implementation effectiveness of the Fund’s current institutional frameworks across a representative sample of approved projects. Noting critical gaps in nearly every aspect of the Fund’s operational modalities and project approval processes, the report calls on the GCF to take progressive steps to make Indigenous Peoples’ and local communities’ rights a key part of its climate actions going forward.
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Pandori, Lauren, Lauren Strope, and Linh Cat. Rocky intertidal community shift over 30 years: 1990–2020 rocky intertidal long term trend report. National Park Service, 2023. http://dx.doi.org/10.36967/2297397.

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Cabrillo National Monument (CABR) is a unit of the National Park System located on the Point Loma peninsula in San Diego, CA, USA. Despite its small size (0.65 terrestrial km2), the monument attracts 851,000 annual visitors (IRMA SRSS Reports 2011-2020), and acts as an “urban island”, providing habitat for unique algal, plant and animal species in an area of increasing development and urbanization. The coastal area of the park also leads to the rocky intertidal zone, which is regarded by many as the best conserved shorelines in mainland southern California. Due to the high-quality habitat and proximity to an urban area, it is critical to monitor community composition and visitor use of the rocky intertidal area. We leveraged over 30 years of long-term monitoring data of both rocky intertidal communities and visitation to investigate: (1) whether visitation has increased over time, (2) if community composition has changed over time across intertidal management zones. We found that visitation to management Zone I has increased over time. Additionally, we found that visitation doesn’t scale linearly across management zones: 73% of people were observed in Zone I, 19% of people in Zone II, and 4% of people in Zone III. PERMANOVA analyses indicated that community composition differed over time and across management zones for all plot types. Documenting community shifts, rather than changes in populations of single species, allows NPS staff to capture, and respond to, ecological transformation. Using the Resist-Accept-Direct (RAD) framework, we recommend that CABR either accept or direct changes to the rocky intertidal (e.g., directing changes in higher visitation areas by implementing a timed entry or shuttle system, and accepting changes in closed or very low visitation areas). Looking forward, long-term rocky intertidal monitoring will inform the effectiveness of resisting, accepting, or directing actions the park takes to uphold the NPS mission at CABR and other NPS units with rocky intertidal habitat, which span the Pacific coast.
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Powell, Richard, and Mohamed Yussuf. Changes in FGM/C in Somaliland: Medical narrative driving shift in types of cutting. Population Council, 2018. http://dx.doi.org/10.31899/rh6.1005.

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Masters, Geoff. Time for a paradigm shift in school education? Australian Council for Educational Research, 2020. http://dx.doi.org/10.37517/91645.2020.1.

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The thesis of this essay is that the current schooling paradigm is in need of review and that the answer may lie in a shift in how we think about teaching and learning. Under the prevailing paradigm, the role of teachers is to deliver the year-level curriculum to all students in a year level. This mismatch has unfortunate consequences for both teaching and learning. Currently, many students are not ready for their year-level curriculum because they lack prerequisite knowledge, skills and understandings. The basis for an alternative paradigm and a 'new normal' is presented. The essay addresses concerns raised about changes to curriculum, including that: changing the structure of the curriculum will mean abandoning year levels; teachers will be unable to manage classrooms in which students are not all working on the same content at the same time; some students will be disadvantaged if students are not all taught the same content at the same time; a restructured curriculum will result in ‘streaming’ and/or require the development of individual learning plans; a restructured curriculum will lower educational standards; and it will not be possible to do this in some subjects.
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