Abstract: A method for improving performance of an uplink non-orthogonal multiple access system under imperfect received user power control. The method is based on a plurality of user-specific transmitter filters assigned to a plurality of users. At a transmitter of each user, a signal to be transmitted according to the uplink non-orthogonal multiple access (NOMA) method is filtered by a unique filter assigned to a corresponding user, and then a baseband-to-RF processing is performed onto a symbol sequence to generate a transmitted signal. Each user transmits their respective signal using a same time-frequency resource, and receiver receives a superimposed signal which is transmitted through a plurality of respective uplink channels under imperfect received power control. An RF-to-baseband conversion is applied onto a received superimposed signal.

Abstract: A method for electronic calibration of a magnetic particle imaging system is provided by proposing a coded calibration scene that contains multiple nanoparticle samples distributed randomly or pseudo-randomly inside a volume of the coded calibration scene where nanoparticle positions are changed virtually multiple times to create different calibration scenes. Virtual effect is created with current carrying electromagnets surrounding the nanoparticle samples.

Abstract: A measurement method and apparatus for determining power levels of pulsed power signals, wherein the pulsed power signals are needed for some applications with a high dynamic range and a high speed simultaneously. The apparatus and the measurement method particularly used to evaluate a performance of fiber optic sensors, optical pulse generators, switching devices and debugging other pulsed power systems.

Abstract: A hardware complexity reduction method for successive cancellation list decoders (SCL) is provided. In path pruning stages of an SCL decoding, L paths with smallest path metrics out of 2L candidate paths are chosen as surviving candidate paths as in a conventional SCL algorithm. Moreover, path indexes of L surviving candidate paths are provided in a sorted manner according to indexes at an output of a sorter module. After a path pruning, instead of L-to-1 multiplexers, (L/2+1)-to-1 multiplexers are deployed to perform copying operations of any required elements stored in dedicated registers of the L surviving candidate paths.

Abstract: A power amplifier system which operates at a narrow band with high power and high efficiency or at a wide band is provided. Said power amplifier system comprises at least one high power amplifier; at least one connection line; at least one input block which receives at least one signal from an input, which is connected to said high power amplifier and connection line, which sends received signal to either high power amplifier or connection line and which amplifies the power of the signal sent to the connection line; and at least one high power asymmetric output switch, which is connected to said high power amplifier and connection line and which sends signals coming from said high power amplifier and connection line to an output.

Abstract: A fault monitoring and management method that collects readings from hardware components and software functions to deduce the source of a system failure by utilizing a system representation method based on directed graphs. The presented method utilizes a system description that establishes absolute dependence, which means that the failure of a component leads to certain failure of the successor components that depend on the output of the failed component, between system or process elements. The change in the system behaviour upon the failure of each system element is automatically determined by algorithms that process the graph depiction of the system architecture.

Abstract: A method for learning deep convolutional features specifically designed for correlation filter based visual tracking includes the steps of, selecting a first image from a first image patch; selecting a second image from a second image patch; forward propagating selected first image by a convolutional neural network model formula, the formula has random weights with zero mean for the parameters; forward propagating selected second image by the convolutional neural network model formula; computing correlation filter using forward propagated second image and centered correlation response; circularly correlating forward propagated first image and computed correlation filter to generate predicted response map; calculating the loss by comparing the predicted response map with desired correlation corresponding selected first image and second image and updating the parameters of the convolutional neural network model formula according to calculated loss.

Abstract: A method for improving performance of an uplink non-orthogonal multiple access system under imperfect received user power control. The method is based on a plurality of user-specific transmitter filters assigned to a plurality of users. At a transmitter of each user, a signal to be transmitted according to the uplink non-orthogonal multiple access (NOMA) method is filtered by a unique filter assigned to a corresponding user, and then a baseband-to-RF processing is performed onto a symbol sequence to generate a transmitted signal. Each user transmits their respective signal using a same time-frequency resource, and receiver receives a superimposed signal which is transmitted through a plurality of respective uplink channels under imperfect received power control. An RF-to-baseband conversion is applied onto a received superimposed signal.

Abstract: A method for generating digital, high resolution pulse width modulation (PWM) signals and a digital feedback correction method suited to the method of generation of the digital, high resolution PWM signals intended for using in feed forward systems, feedback systems and combined feed forward system and feedback system are provided.

Abstract: A method of calibrating a magnetic particle imaging system including a magnetic field generator and a measurement device by proposing a coded calibration scene, wherein the coded calibration scene contains multiple nanoparticle samples distributed inside a volume of the coded calibration scene, larger than a field of view, wherein the coded calibration scene is moved linearly in one or more directions and/or rotated at one or more axes on the magnetic imaging system, and further, a mechanical system for moving the coded calibration scene.

Abstract: An RF crossover apparatus provides low transmission and return losses for microwave systems and meets the requirement for the RF signals to leap over each other as in an insulated state. The RF crossover apparatus contains a body produced from ceramic material, at least two RF strips placed inside the body in a way to intersect each other and at least one insulation layer insulating the RF strips placed on the body at least from the external environment. The body produced from ceramic material enables operation on high frequencies and this provides low transmission and return losses. The RE crossover apparatus also contains matching circuits on the tips of the RF strips for the RF strips to be passed to chip devices during use.

Abstract: A method is provided for acoustic source direction of arrival estimation and acoustic source separation, via spatial weighting of the dictionary based display of the steered response function calculated for a certain number of directions from spherical harmonic decomposition coefficients obtained from microphone array recordings of the sound field. The usage of spatial band limited functions of plane waves to represent more complex directional maps of the sound field constitutes the algorithm. These functions are calculated for pre-defined directions on an analysis surface (such as a sphere). The directions of arrival of sound sources are calculated with the same method in order to group source estimates to localize sound sources. Thereby, directions of arrival can be obtained from the recordings of the sound sources captured by means of a microphone array and following this, sound sources can be separated by using this direction information or predetermined source arrival directions.

Abstract: A test method for determining impact effects and abrasion effects of particles such as rain, hail, dust, ice, sand, and micrometeoroids at speeds above Mach, i.e., higher than the speed of sound. The test method includes the steps of placement of balls in capsules, firing the capsules with a rifle firing system, hitting of the fired capsules and/or the balls to a target inside a firing range, recording the impact effects during a firing with a recording system, determining a durability and a lifetime of a test sample of test samples by calculating a number of the balls hitting the target and a number of shots providing an effect.

Abstract: An adhesive with a refractive index of 2.0 and over is transparent at an infra-red band. A production method of the adhesive and a beam splitter prism set is provided. The beam splitter prism set separates middle and far infra-red beam paths for electro-optical monitoring systems according to wavelengths of the middle and far infra-red beam paths, wherein in the electro-optical monitoring systems the adhesive is used.

Abstract: A scene-based non-uniformity correction method to achieve a fixed-pattern noise reduction and eliminate ghosting artifacts based on robust parameter updates via a confident inter-frame registration and spatio-temporally consistent correction coefficients. The method includes the steps of: Assessing an input image frame whether the input image frame has a sufficient scene detail for registrations to prevent false registrations originated from low-detail scenes, calculating horizontal and vertical translations between frames to find a shift, introducing a scene-adaptive registration quality metric to eliminate erroneous parameter updates resulting from unreliable registrations and applying a Gaussian mixture model (GMM)-based temporal consistency restriction to mask out unstable updates in non-uniformity correction parameters.

Abstract: A filter design method for a small target detection on infrared imagery using a normalized-cross-correlation layer in neural networks, including the steps of: Normalizing inputs and filters of a convolutional neural network, wherein normalizing inputs and filters of the convolutional neural network provides faster convergence in a limited database. Defining a forward function of a normalization layer in the convolutional neural network, wherein the forward function of the normalization layer in the convolutional neural network is used for training a neural network. Defining a derivative function of the normalization layer for a back propagation in a neural network training phase. Training created neural networks with datasets, wherein the datasets consist of target and background views and using trained neural networks in the small target detection.

Abstract: A supply circuit providing transmission of a control signal to gate leg by a power transistor. The supply circuit includes a primary transistor, a primary resistance connected between the primary transistor drain leg and ground; a secondary resistant connected to supply leg of primary transistor on one side and to gate leg, the primary transistor and a power supply from other side; a secondary transistor connected to drain leg of primary transistor from gate leg, connected to ground from drain leg and connected to the power supply by means of a third resistance from supply leg and a control signal output connected to the secondary transistor supply leg, providing transmission of a control signal by power transistor to a gate leg.

Abstract: A phase sensitive optical time domain reflectometry based distributed acoustic sensing system eliminating a degradation in a sensing performance encountered due to a finite extinction ratio of optical elements used to generate optical pulses is provided. A classical Optical Time Domain Reflectometer (OTDR) concept and a phase-OTDR concept are merged to generate an optic pulse for an interrogation with commercially available optic modulators. Characteristics of a light inside a fiber optic cable carry properties of both classical OTDR and phase-OTDR systems. The proposed solution does not require any modifications in a receiver part of the phase-OTDR systems and the proposed solution is used for any type of phase-OTDR system structure.

Abstract: A method to reconstruct images from raw MRI data, and recover an image by solving an optimization problem. Hence, the method is an image reconstruction system for image recovery contrary to similar methods, the method reconstructs all images using both joint and individual objective functions. The method includes: acquiring with the MRI system, multiple images under an influence of different contrast mechanisms, wherein the different contrast mechanisms belong to a same anatomy, solving an optimization problem with an optimization algorithm using both joint and individual objective functions simultaneously for each of multiple image contrasts or a subset of the multiple image contrasts, to reconstruct the multiple images from acquired data.

Abstract: An active limiting system that is suitable to protect a low noise amplifier against the high power signals received from a signal input includes, at least one first switch, source of which is connected to a gate voltage; at least first resistor which is connected between the gate and source of the first switch; at least one second resistor, which is connected between a drain voltage and drain of the first switch; at least one second switch, source of which is connected to said drain voltage and drain of which is connected to a signal input; at least one third resistor which is connected between the drain of the first switch and gate of the second switch; at least one first filtering element, which blocks DC currents/voltages and which is connected between the source of the second switch and ground.