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Pulse Or Digital Communications > Equalizers > Automatic

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Automatic patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

10/23/14 - 20140314136 - Passive equalizer and high-speed digital signal transmission system using the same
Disclosed herein are a passive equalizer and a high-speed digital signal transmission system, including first and second impedances connected in series to a first transfer line, third and fourth impedances connected in series to a second transfer line, a first inductor connected in parallel between the first impedance and the...

09/25/14 - 20140286383 - Selectable-tap equalizer
A signaling circuit having a selectable-tap equalizer. The signaling circuit includes a buffer, a select circuit and an equalizing circuit. The buffer is used to store a plurality of data values that correspond to data signals transmitted on a signaling path during a first time interval. The select circuit is...

09/18/14 - 20140269878 - Wireless communication system with signal processing mechanism and method of operation thereof
A method of operation of a wireless communication system includes: receiving a received signal; generating concurrently a first modulation data and a second modulation data from the received signal; calculating an error energy for the first modulation data and the second modulation data; and removing a residual Direct Current (DC)...

09/18/14 - 20140269879 - Digital transmitter
An equalizer provided in a digital transmitter compensates for attenuation in a signal channel to a digital receiver. The equalizer generates signal levels as a logical function of bit history to emphasize transition signal levels relative to repeated signal levels. The preferred equalizer includes an FIR transition filter using a...

08/21/14 - 20140233626 - Virtual reception diversity apparatus and method in wireless communication system
A receiving apparatus in a wireless communication system is provided. The receiving apparatus includes a first interference cancellation unit configured to cancel interference from a received signal that is received through an antenna according to a first scheme, a second interference cancellation unit configured to cancel interference from the received...

07/17/14 - 20140198835 - Method and system for a multi-standard receiver
A multi-standard receiver may comprise in an electronic device, receiving an input radio frequency (RF) signal comprising at least two RF signals of different communication standards. The input RF signal may be separated into two signals based on their different communication standard sand configurable gain levels may be applied to...

07/10/14 - 20140192852 - Equalizer device, receiver device and equalization method
The present invention is provided with: a CIR generating unit which generates an channel impulse response from a received signal; a CIR variation detection unit which uses a plurality of channel impulse responses generated from a plurality of different sections of the received signal by the CIR generating unit to...

07/03/14 - 20140185660 - Wireless reception system and method for estimating channel effect thereof
A wireless reception system includes a reception module, a preliminary estimation module, an equalization module and a selection module. The reception module receives a reference signal and at least one input signal transmitted via a multipath environment. The reference signal is associated with a known signal unaffected by the multipath...

05/22/14 - 20140140385 - Equalizer and operating method thereof
An equalizer includes a sampler configured to sample an edge and data of an input signal or an induced signal obtained from the input signal, a clock generator configured to generate an edge clock used to decide sampling timing of the edge and a data clock used to decide sampling...

05/15/14 - 20140133541 - Wireless communication apparatus and wireless communication method
A wireless communication apparatus includes a wireless section configured to receive a plurality of signals via a plurality of antennae from a transmitting device having another plurality of antennae; and a demodulation section configured to apply QR decomposition to a channel matrix generated based on the received signals from the...

05/15/14 - 20140133542 - Signal equalization with compensation for scrambling code correlation
A method for equalizing a received radio signal in a WCDMA system, comprises receiving (210), in a radio receiver, of a digital radio signal spread by scrambling codes. A channel estimation is performed (230) on the received digital radio signal for a plurality of channels. The received digital radio signal...

01/16/14 - 20140016686 - Overcoming multiple reflections in packages and connectors at high speed broadband signal routing
Discussed herein is a semiconductor package and a method of overcoming multiple reflections while transmitting high speed broadband signals through the semiconductor package. The semiconductor package includes at least one trace having a first terminal that is configured to receive a broadband signal and a second terminal configured to output...

01/16/14 - 20140016687 - Apparatus for performing channel equalization on a mimo signal
The present invention relates to a receiver in a 2×2 Line of Sight Multiple Input Multiple Output, LoS MIMO, system. The receiver is arranged to estimate a first (Ŝ1) and a second (Ŝ2) signal on the basis of a first (r1(t)) and a second (r2(t)) signal received from respective first...

01/02/14 - 20140003483 - Highly-spectrally-efficient receiver
A receiver may be operable to receive a QAM-based, inter-symbol correlated (ISC) signal having pilot overhead of 5% at a signal-to-noise ratio (SNR). The receiver may be operable to process the QAM-based, ISC signal to output information at a particular rate with a symbol error rate lower than or equal...

12/26/13 - 20130343446 - Highly-spectrally-efficient reception using orthogonal frequency division multiplexing
Circuitry for use in a receiver may comprise: a front-end circuit operable to receive an orthogonal frequency division multiplexing (OFDM) symbol on a first number of physical subcarriers. The circuitry may comprise a decoding circuit operable to decode the OFDM symbol using an inter-carrier interference (ICI) model, the decoding resulting...

12/05/13 - 20130322511 - Method and apparatus for synchronization of data and error samples in a communications system
A method and apparatus for processing input data signals transmitted in a continuous mode, or in a burst mode, of signal transmission, such as in a satellite or a computer network communications system. A receiver receives input data signals and a buffer stores the received input data. Processing circuitry generates...

07/04/13 - 20130170536 - Data equalizing circuit and data equalizing method
wherein a phase shift of each of the calculation periods with respect to its corresponding UI is different from a phase shift of any of the other calculation periods with respect to its corresponding UI....

07/04/13 - 20130170537 - Data equalizing circuit and data equalizing method
A data equalizing circuit includes an equalizer configured to control a gain of data according to a value of a control code and output a controller gain; and a detection unit configured to divide n cycles of the data into N periods, count data transition frequencies for n/N periods while...

05/09/13 - 20130114662 - Method and apparatus for radio receiver equalization
A method, apparatus and computer program product are configured to provide calibration accuracy in an analog filter. In this regard, a method is provided that includes estimating a cutoff frequency for an analog filter. The method further includes causing a filter tuning word to be modified based on the estimated...

05/09/13 - 20130114663 - Flexible receiver architecture
One embodiment relates to a receiver circuit for a data link. The receiver circuit includes at least a first signal path, a second signal path, and a path selector circuit. The first signal path includes first equalization circuitry, and the second signal path includes second equalization circuitry. The path selector...

05/02/13 - 20130107933 - Linear system for link training
An apparatus for equalizing channels is provided, which is generally transparent to link training. The apparatus generally includes equalization paths formed by an input circuit, a crossbar, and an output circuit and a controller. Each equalization path is coupled to at least one of the channels, and a controller has...

12/06/12 - 20120307880 - Mixed-phase real time automatic room equalization system
A system is provided for determining mixed-phased real time room equalization that employs crossover filters for splitting the incoming spectrum and also re-uses the cross-over filters in the equalization filter....

11/29/12 - 20120300828 - Transmission system with isi channel and method of operating thereof
There is provided a transmission system and method of operating thereof. The method comprises: dividing a data sequence to be transmitted into a plurality of data blocks; encoding one or more data blocks with one or more linear systematic cyclic codes thus giving rise to encoded data blocks; transmitting said...

05/31/12 - 20120134405 - Apparatus and method for mitigation of receive power imbalance on equalizer performance
An apparatus and method for mitigation of receive power imbalance including estimating input power levels on two diversity receive branches in a receiver; computing a power imbalance between the two diversity receive branches and determining a weaker receive branch; setting a weakRX parameter based on the weaker receive branch; computing...

03/22/12 - 20120069890 - Likelihood value calculation device, likelihood value calculation method, and radio system
A likelihood value calculation device includes: likelihood value calculation unit 201 that takes as input an equalization signal of a modulated signal, that, in accordance with a first control signal, calculates from the equalization signal that was received as input a provisional likelihood value for which the bit value of...

03/01/12 - 20120051415 - Demodulation of 16-qam, dcm data symbols using two hybrid-qpsk constellations
In one embodiment, a demapper uses two hybrid-QPSK constellations to demap pairs of equalized data symbols recovered from 16-QAM, DCM OFDM symbols, wherein the equalized data symbols in a pair correspond to the same four-bit group. A first hybrid-QPSK constellation is generated by combining the real components of both 16-QAM...

02/16/12 - 20120039379 - Receiver apparatus for receiving a multicarrier signal
In time varying OFDM systems, the effect of a non-ideal time synchronization may lead to a poor performance in terms of decoded average bit error rate versus the signal-to-noise ratio. The receiver apparatus (3) of the transmission system (1) estimates a subcarrier-dependent channel frequency response and determines an intercarrier interference...

09/22/11 - 20110228836 - Method for impulse noise mitigation
A method of noise mitigation in a multi-carrier communication system includes receiving a signal from a decision device, determining whether synchronization symbol update is enabled, updating at least one of frequency-domain equalizer (FEQ) coefficients or digital echo canceller (DEC) coefficients in synchronization symbol periods if the synchronization symbol update is...

06/16/11 - 20110142119 - Receiver circuit
A receiver circuit includes an equalizer circuit that adjusts reception intensity of an input signal based on an intensity adjustment value to generate a correction input signal; a first holding unit that holds a plurality of data items sampled based on a sampling clock for sampling values of the data...

06/09/11 - 20110134988 - Programmable sfp or sfp+ module
Various example embodiments are disclosed. According to one example embodiment, a small form factor pluggable (SFP or SFP+) module may include an equalizer and a logic controller. The equalizer may be configured to receive data, provide signal information to a logic controller based on the received data, equalize the data...

11/25/10 - 20100296569 - Digital demodulating apparatus for timing error detection
The invention discloses a digital demodulating apparatus for timing error detection, including a numerically controlled oscillator, an equalizer unit, a decoder and a timing error detector. The numerically controlled oscillator generates a first sequence signal according to an input sequence signal and a timing error sequence signal. The equalizer unit...

09/23/10 - 20100238991 - Equalization by the pulse shape inverse of the input to the fri processing in pulse based communications
Certain aspects of the present disclosure relate to a method for equalizing a pulse signal corrupted by a noise and by various channel effects for obtaining a signal based on the periodic-sinc pulse, which is suitable for Finite Rate of Innovation (FRI) processing applied at a receiver of a pulse-based...

06/10/10 - 20100142605 - Communications device including a filter for notching wideband transmit signals and associated methods
A communications device includes a modulator and a filter downstream therefrom and operable to generate an output wideband complex signal with a frequency notch therein. The filter includes a finite impulse response (FIR) filter with L taps to generate N output values, with L>N. A Fast Fourier Transform (FFT) block...

03/04/10 - 20100054320 - Amplitude equalizer for fm transmitters
An improved amplitude equalizer for FM transmitters that compensates for undesirable frequency response characteristics in an audio source or in an FM receiver. In a preferred embodiment, the amplitude equalizer includes a pre-emphasis network including a set of components that can be selectively switched in and out of the network...

02/11/10 - 20100034251 - Estimation of symbols of transmitted signals using hypotheses
A method of estimating a symbol that has been transmitted into a channel connecting a modulator for producing modulation symbols and an equaliser, wherein a channel estimate describes said channel and the method comprises: calculating a metric for each of a number of hypotheses of a sequence commencing with the...

11/05/09 - 20090274205 - System and method for anticipatory receiver switching based on signal quality estimation
In various embodiments, a first and second complex multiplier may be configured to receive an input signal and provide a baseband I component signal and a baseband Q component signal, respectively. A first and second filter may be configured to filter the baseband I component signal and the baseband Q...

10/15/09 - 20090257483 - Dual correlation frame synchronization system and method
A system and method utilize a dual correlation, one for the synchronization pattern (sync correlation) and one for the channel equalization pattern (CE correlation), to determine where the channel equalization pattern starts and thus establish frame synchronization. The system and method compare the two correlations and decides on the start...

09/24/09 - 20090238257 - Lonely pulse compensation
An apparatus comprising a transmission line, a receiver circuit, and a high pass filter circuit coupled between the transmission line and a receiver circuit input. The receiver circuit is configured to receive a data signal over the transmission line at a first data rate. The high pass filter circuit is...

09/10/09 - 20090225823 - Equalization apparatus, equalization method and receiver using the same
This invention relates to an equalization apparatus, an equalization method and a receiver using the same. Two equalizers are applied to the equalization apparatus to cover two clusters of a channel. The weights of the two equalizers are calculated by channel gains of the whole channel based on the minimum...

09/03/09 - 20090219981 - Minimum mean square error equaliser with reduced complexity
The present invention relates to the field of communication devices, e.g. wireless communication devices. More particularly, the present invention relates to the field of signal equalisation, especially minimum mean square error equalisation. The present invention especially relates to an equaliser for a communication device, a method of equalising one or...

08/06/09 - 20090196335 - Signal processing device and signal processing method utilized in communication system
The present invention provides a signal processing device and a signal processing method utilized in a communication system, wherein the communication system includes at least a channel. The signal processing device includes an analog-to-digital converter (ADC), a first adding unit, a feed forward equalizing unit, a data slicing unit, a...

03/26/09 - 20090080506 - Receiver employing non-pilot reference channels for equalizing a received signal
In one embodiment, a receiver has a reference generator and a main equalizer. The reference generator equalizes a received signal using one or more pilot reference signals. Then, the reference generator decodes one or more predetermined data channels of the equalized signal, makes hard decisions on the data of each...

03/05/09 - 20090060018 - Transmit equalizer for dispersive channels
An equalizer at the transmitter reduces data-dependent jitter introduced by a non-linear device in the transmitter. In one implementation, the equalizer is T/2-spaced. In an alternate implementation, it is T-spaced....

02/26/09 - 20090052513 - Data processing method, equalizer, receiver, communication system, network element, and terminal using simplified channel matrix inversion
The invention is related to a communication terminal, comprising: means (618) for creating at least one channel matrix assuming predetermined interfering signals as a part of a desired signal; means (618) for dividing the at least one channel matrix into multiple sub-matrices; means (618) for diagonalizing the sub-matrices by using...