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JP7425165B1 |
An object of the present invention is to detect equivalence convergence with high precision for a wide variety of modulation methods and to stably perform adaptive equalization processing. [Solution] When a polarization separation monito...
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JP7331657B2 |
An adaptive equalizer includes a sample buffer that temporarily stores data obtained by fractional sampling at a sampling rate that is larger than one time and smaller than two times a symbol rate; and a processor coupled to the sample b...
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JP7327502B2 |
In order to suppress wrong convergence of a filter coefficient without reducing data communication speed, this filter coefficient update amount output device is provided with: a first output unit which outputs a first coefficient update ...
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JP2023102181A |
To obtain an output signal with low residual noise and low signal distortion in a short time by appropriately controlling coefficient updates of an adaptive filter.A signal processor for this application comprises: first input means for ...
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JP2023100564A |
To achieve both fast convergence and low distortion output signals without manual control of step size, even when a gain of an acoustic impulse response approximated by an adaptive filter is less than 1.A signal processor for this applic...
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JP2023100220A |
To realize both fast convergence and low distortion output signal without performing manual control of step size even if a gain of acoustic impulse response identified by an adaptive filter is less than 1.A signal processing device accor...
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JP7252086B2 |
An adaptive identification system (110), for identifying a propagation system (11) characteristic by an adaptive filter (111), includes a signal generator that generates an identification input signal including a frequency component of a...
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JP2022144177A |
To solve the problem that an adaptive equalizer is large in size.An adaptive equalizer comprises: a convolutional integration part which calculates an equalization signal from an input signal and tap coefficients by tap output points and...
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JP7126529B2 |
Described is a phase-switched phase-switched, impedance modulation amplifier (PSIM). The PSIM has an input that can be coupled to a source and an output that can be coupled to a load. The PSIM includes one or more phase-switched reactive...
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JP7112284B2 |
To provide an active noise control system capable of reducing sound pressures of a plurality of dominant frequencies included in a noise etc., at a time.An active noise control system has: a controller 3 which generates and outputs a con...
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JP7069229B2 |
The disclosure relates to a method for measuring the variance in a measurement signal, comprising the following steps: filtering the measurement signal by means of a high-pass filter in order to obtain a filtered measurement signal; dete...
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JP7055268B2 |
A tap-coefficient control circuit sets the tap coefficient converged by the second tap coefficient updater as an initial value of the tap coefficient in the first digital filter which is to be updated by the first tap coefficient updater...
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JP7018130B2 |
An echo cancellation method and apparatus based on time delay estimation. The method comprises: acquiring microphone signals and reference signals and preprocessing same (101); determining frequency-point signals with a nonlinear conditi...
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JP7017103B2 |
A system for implementing filter control includes an audio processing apparatus, an analog-to-digital converter, a digital-to-analog converter, a filter, and a processor. The processor is configured to receive parameters that define a fr...
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JP7009984B2 |
To provide a noise removal filter device capable of efficiently removing noise from a signal in which a noise component overlaps a direct current component.A noise removal filter device includes an IIR notch filter 626 to which sampling ...
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JP6982556B2 |
To provide an active noise control system capable of reducing sound pressures of a plurality of dominant frequencies included in noise or the like at once.The active noise control system includes: a controller 3 for creating and outputti...
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JP6964581B2 |
A controller for an adaptive noise canceling (ANC) system simplifies the design of a stable control response by making the ANC gain of the system independent of a secondary path extending from a transducer of the ANC system to a sensor o...
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JP6954349B2 |
An equalizer can connect with N receiving antennas that receive single carrier transmission signals transmitted from M transmitting antenna(s) in the same frequency band at the same time, and receives as input L signals sampled in a samp...
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JP6948169B2 |
The present application relates to an adaptive filter using manageable resource sharing and a method of operating the adaptive filter. The adaptive filter comprises a cluster controller configured for allocating each of several computati...
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JP6928496B2 |
The present application relates to an adaptive filter using resource sharing and a method of operating the adaptive filter. The filter comprises at least one computational block, a monitoring block and an offset calculation block. The co...
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JP6894402B2 |
A system identification device for performing fast real-time identification for a system from input/output data includes a filter robust to disturbance, by setting the maximum energy gain from the disturbance to a filter error, as an eva...
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JP2021040239A |
To enable adjustment of a digital filter suitable for disturbances generated in the surroundings.A receiving device includes: a digital filter that removes or attenuates disturbances included in a signal received via a communication line...
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JP6819327B2 |
A serial-parallel conversion circuit includes: a phase detector that outputs a first phase detection signal indicating whether a phase of a clock signal is advance or behind, a signal amplifying circuit that amplifies the first phase det...
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JP6691727B2 |
A method includes receiving a signal from a remote transmitter via an electrically- tunable antenna (32, 36) having a tunable element (34, 38, 98). An adjustment, to be applied to a response of the electrically-tunable antenna, is calcul...
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JP6671877B2 |
Computationally efficient methods and related systems, for use in a test and measurement instrument, such as an oscilloscope, optimize the performance of DFEs used in a high-speed serial data link by identifying optimal DFE tap values fo...
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JP2020014066A |
To provide a receiver capable of performing appropriate noise removal according to a reception state and a noise reduction method of the same.The receiver includes a separation unit and a changing unit. The separation unit performs quadr...
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JP6632037B2 |
There is provided a method of sensing a rotation rate using a vibrating structure gyroscope, said gyroscope comprising an electronic control system comprising one or more control loops, wherein at least one of said control loops comprise...
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JP6625765B2 |
The technology described herein can be embodied in a computer implemented method that includes detecting, by one or more processing devices, onset of an unstable condition in an active noise control system. The method also includes obtai...
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JP6625198B2 |
Partitioned block frequency domain adaptive filter device comprising: a frequency domain adaptive filter configured for filtering a frequency domain representation of a time domain input signal depending on a set of filter coefficients c...
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JP6596908B2 |
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JP2019169803A |
To prevent an operation error of a DFE in a no-signal period and realize reliable data communications.According to one embodiment, a receiver executes decision feedback-type equalization processing for input data while adaptively updatin...
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JP2019169827A |
To improve an impulse response characteristic of an equalizer circuit.According to one embodiment, an equalizer circuit includes a nonlinear equalizer including: a determination circuit configured to generate a second signal indicating a...
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JP2019165460A |
To provide a method for quantization noise cancellation in a case of a continuous-time multi-stage noise shaping analog-to-digital converter (CT MASH ADC).Digital quantization noise cancellation filters adaptively track transfer function...
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JP6581894B2 |
An adaptive equalizer includes: a speculative equalization circuit which operates a plurality of first tap coefficients with respect to input data and selects operation data corresponding to the input data from a plurality of operation d...
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JP6532777B2 |
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JP6504381B2 |
To provide a system identification device which reduces computational complexity.A system identification device 1 includes: first subsystem identification means 10 for estimating a parameter for initial processing from input/output data ...
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JP6501971B2 |
Method for capturing a high dynamic range signal includes: receiving the wideband analog signal; digitizing the wideband signal by a wideband ADC; detecting N strongest sub-bands in the digitized wideband analog signal; adaptively progra...
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JP2019046389A |
To provide a storage device, a host system, and an information processing system suitable for detecting abnormality in a reception circuit of the storage device.A storage device in an embodiment comprises a reception circuit and informat...
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JP6467332B2 |
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JP6467362B2 |
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JP2018204662A |
To provide an active-type vibration noise control device using an adapted notch filter which can perform stable control while suppressing an increase of a calculation load.An active-type vibration noise control device comprises: a refere...
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JP6406061B2 |
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JP6399505B2 |
A receptor of wireless signal in a wireless communication system can be configured to correct for degradations of signal quality. The reception apparatus can include a filter which is configured to create a filtered signal by make correc...
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JP6363324B2 |
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JP6369295B2 |
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JP6300901B2 |
A system, device and method that is configured to operate an active noise reduction system for a motor vehicle, where there is an adaptive feed-forward noise reduction system input sine wave at a frequency to be cancelled, and where the ...
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JP6294493B2 |
A device and method that is configured to operate an active noise reduction system for a motor vehicle, where there is an active noise reduction system input signal that is related to the vehicle engine speed, and where the active noise ...
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JP2018036982A |
To provide an active type vibration control device which can surely execute adaptive control when there is an operation restriction of a vibration generator.Vibration on an evaluation point 20 for controlling vibration of a control objec...
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JP6256187B2 |
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JP6221623B2 |
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