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JP2012070348A |
To provide an information communication system having an adaptive error prediction filter that compensates fading distortion under a wireless communication environment.An adaptive equalizer updates a filter coefficient by switching over ...
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JP2012065120A |
To reduce a probability of increasing a code amount by prediction when encoding a prediction residual which is obtained by subtracting a prediction image from an encoding object image.A loop filter part 120 includes a filter coefficient ...
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JP4903842B2 |
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JP4903843B2 |
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JP2012029013A |
To efficiently and stably extract a desired signal component by determining a filter coefficient sequence which can obtain an ideal filter property in such a range as to influence only derivation processing of the filter coefficient sequ...
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JP2012019370A |
To adjust a notch filter automatically to minimize the oscillatory frequency components which are generated when the control band is widened.The adaptive notch filter comprises a notch filter which minimizes the natural frequency compone...
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JP2012019371A |
To automatically adjust a notch filter group so as to suppress a plurality of resonances.An adaptive notch filter 10 comprises: a plurality of notch filters which are arranged in series in the control system and includes at least a first...
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JP4854826B2 |
Each filter processing element has a register of partial results equal to a number of different filters.
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JP4857446B2 |
A system and a method are disclosed for converting analog signal to digital. An analog to digital converter system comprises an analog to digital converter (ADC) and an adaptive filter coupled to the ADC, wherein the adaptive filter is c...
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JP4853343B2 |
The circuit has an adaptive filter (30) e.g. wiener filter, operating in an adaptive mode in which the filter is adapted to changes in a received electronic communication signal. The filter operates, in a non-adaptive mode, with a reduce...
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JP4845246B2 |
An adaptive channel equalizer (50) for processing a demodulated (18) VSB signal containing terrestrial broadcast high definition television information operates adaptively in blind, training, and decision-directed modes. The VSB signal i...
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JP2011239262A |
To provide an adaptive equalizer which can be stable and maintain equalization performance under the circumstance where obtained states of input data frequently change.An adaptive equalizer of the first mode of this invention equalizes r...
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JP4822946B2 |
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JP2011216955A |
To provide a method for controlling a preamplifier by a simple method and a device materializing the method.A statistical information calculation circuit 50 included in a frequency characteristic compensation device, monitors a digital i...
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JP2011205533A |
To obtain an adaptive equalizer, capable of preventing identification accuracy of a linear element from being reduced by the existence of a non-linear element in a transfer function.In a first signal converter 101 to a second signal conv...
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JP2011197011A |
To vary coverage of a detection zone by changing a range gate in each antennal beam.A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. A zero crossing ...
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JP4780904B2 |
A transceiver of a communication system is disclosed. The transceiver is implemented by a demodulation apparatus including a front-end receiver, a noise canceller, a feedforward equalizer (FFE) and a decoding system. The front-end receiv...
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JP2011188357A |
To provide a digital filter in which high-speed, high-accuracy and real-time filter processing can be obtained, by introducing and setting as a variable a value relating to the correlation of an error signal, an input signal and an outpu...
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JP4775596B2 |
The present invention provides an equalizer (200) and a method for computing equalizer filter coefficients in a communication receiver. The equalizer filter coefficients are computed on the basis of a real matrix T which is generated fro...
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JP4778007B2 |
Apparatus, and an associated method, for the receive part of a receiving station, such as a mobile station or other transceiver of a cellular communication system. Selection is made of filter characteristics to be exhibited by an adaptiv...
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JP4773294B2 |
An adaptive equalizer includes: an adaptive filter; and a control unit. The adaptive filter performs an adaptive equalization processing for an input signal modulated by a modulation method that produces a modulation signal with constant...
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JP4771657B2 |
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JP2011161965A |
To provide an on-vehicle audio apparatus which can compensate an audio signal for natural noise in a cabin in terms of audibility upon consideration of a silencing amount of noise in the cabin by an active noise controller even when a ve...
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JP2011123389A |
To suppress an echo caused by words spoken by a user, and a sound emitted from an acoustic device used by a user at a seat of an aircraft, etc., and to effectively reduce noise in the surrounding.A noise reducing device includes a plural...
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JP4708359B2 |
A method and apparatus for dynamically inserting gain in an adaptive filter is taught. This selective insertion of gain may be used to allow an adaptive filter to converge more quickly and/or to overcome inherent limitations of the adapt...
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JP4700871B2 |
Stereo echo cancellation is necessary to overcome the objections observed by, for example, teleconferencing, voice controlled video/audio apparatuses, etc. To improve the existing filters, an adaptive filter is used along with a signal p...
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JP4700054B2 |
Methods, apparatuses, and systems are presented for performing channel equalization involving receiving a signal from a channel associated with inter-s interference (ISI), providing the received signal to an inductor, capacitor, resistan...
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JP4699664B2 |
A method and apparatus for determining the location of the peak of a signal using an adaptive filter bank. The method includes the steps of providing a set of calculated output points for the function using a predetermined calculation in...
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JP4699479B2 |
Techniques for efficiently choosing a desired decoder in the presence of varying Doppler and/or mobility are disclosed. In one aspect, a method for selecting a filter for decoding forward-link (FL) information in a wireless communication...
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JP4690243B2 |
To solve the problem that, in a conventional noise reduction system, noise is emphasized for noise (periodic noise) including line spectrum components, while noise including continuous spectrum components is reduced very well. In a perio...
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JP4681813B2 |
Provided are a method of updating a tap coefficient of a channel equalizer while reducing the number of calculations and the divergence, and a circuit arranged and configured to execute the method. The method includes evaluating whether ...
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JP4675327B2 |
An apparatus for processing an input signal, wherein the input signal comprises a plurality of subsignals associated to discrete transmitters or receivers, wherein the discrete transmitters or receivers are disposed at predetermined geom...
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JP4663630B2 |
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JP2011060369A |
To provide a filter coefficient control apparatus for adaptively determining a filter coefficient of a digital filter.The filter coefficient control apparatus adaptively calculates and outputs the filter coefficient of the digital filter...
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JP2011050114A |
To provide a compact antenna element that operates in a high-density circuit environment, is relatively low-cost, and can be used to provide an array antenna having relatively higher performance.An antenna element includes a cover layer ...
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JP2011044798A |
To obtain an effect equivalent to one to be obtained when a tap coefficient is extended without extending the bit width of the tap coefficient settable in a multiplier in a digital filter.A target tap coefficient made to be a numeric val...
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JP4638134B2 |
An equalizer and an equalization method usable in a high definition television (HDTV) are provided. The equalizer may receive an input signal including a data signal and a training sequence and may compensate for distortion of the input ...
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JP4632047B2 |
A signal processor includes: a first adaptive filter that takes a first signal as input and generates a first pseudo signal; a first subtractor that subtracts the first pseudo signal from a second signal to supply a first differential si...
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JP2011022604A |
To provide a signal processing method and a device achieving noise cancellation in which convergence time is short and distortion of output speech is small for input signals of a signal-to-noise ratio having a broad range at a speech inp...
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JP4616196B2 |
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JP2011010253A |
To provide a control logic having the oscillating reducing effect in broad frequency band, and to provide a feedback control system.In a control logic for updating a filter coefficient while including convolution integration, only an err...
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JP2010283419A |
To provide a determination feedback adaptive equalizer enabling continuation of transmission while maintaining a certain fixed level of quality and having robustness and resistance against environmental fluctuation, when assuming erroneo...
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JP4588168B2 |
A method for fast training of equalizers in a DMT system begins by normalizing the incoming receive signal (y) via steps (108-116). By normalizing the signal, the convergence rate of the training algorithm becomes relatively independent ...
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JP4581114B2 |
To provide an adaptive filter capable of realizing high-speed convergence, simple computation, high tracking capability, and sufficiently low delay together with step size control for each frequency domain. An adaptive filter 80 includes...
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JP4580508B2 |
To improve the cancellation performance by excluding an influence of a noise energy to perform stable noise suppression processing even in the case of variance of the noise energy and preventing an unexpected noise from being erroneously...
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JP4581293B2 |
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JP4582680B2 |
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JP4578426B2 |
To provide an "Audio sound cancellation system" (ASC system) capable of preventing an increase in throughput and hardware scale, even if the ASC is arranged at the pre-stage of a MA (Microphone Alley) system. A cancellation controller 53...
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JP2010245629A |
To obtain at low cost an adaptive equalizer which has a short processing delay.In the adaptive equalizer 100, a first sampling frequency is set to a value higher than a value of a second sampling frequency. First and second input signals...
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JP4569446B2 |
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