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"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 8184736 | Encoding bits into simultaneous pulse pairs Methods and apparatuses for encoding a plurality of bits into a plurality of pairs of simultaneous electrical pulses. ... | 05/22/2012 |
| 8184737 | Echo cancellation and echo channel estimation system using multiple antennas Disclosed herein is an echo cancellation and echo channel estimation system that can relay transmit signals without interference with echo signals by canceling the undesired echo signals received by a relay. The echo cancellation and echo channel estimation system i... | 05/22/2012 |
| 8144803 | Inversion of channel distortion by adaptive wavelet lifting A method for inverting telecommunication channel distortion by adaptive wavelet lifting. The distortion signal is analyzed using wavelet lifting and the inverse filter is computed. Coefficients of the inverse filter are used to either compute a transmission pre-filt... | 03/27/2012 |
| 8139671 | Contactless transmission of electrical signals between two units The invention discloses an arrangement and an associated method for contactless transmission of electrical signals between two units 1, 2, wherein a first unit 1 has a transmitting element 11 emitting electrical signals and at least one conducto... | 03/20/2012 |
| 8126078 | Method and apparatus for reducing noise in an unbalanced channel using common mode component A method and apparatus are disclosed for reducing noise, such as external noise, cross-talk and echo, in an unbalanced channel. A cross-talk canceller is disclosed that uses a multi-dimensional finite impulse response filter to process both the differential, d, and ... | 02/28/2012 |
| 8094745 | Power control using denoised crosstalk estimates in a multi-channel communication system An access node of a communication system is configured to generate denoised crosstalk estimates for respective channels of the system and to adjust power levels of signals transmitted over one or more of the channels based on the denoised crosstalk estimates. The ac... | 01/10/2012 |
| 8081704 | Dynamic digital communication system control Methods, apparatus and systems for dynamically controlling a digital communication system, such as a DSL system, collect information about digital communication lines in the system and adaptively and/or dynamically determine line and signal characteristics of the di... | 12/20/2011 |
| 8077795 | Apparatus and method for interference mitigation An apparatus in a wideband radio transceiver for mitigating interference between a wideband radio operating in a wide frequency band and a narrowband radio operating in a narrow frequency band within the wide frequency band. The effects of transmissions by the wideb... | 12/13/2011 |
| 8077796 | Methods and arrangements for communicating in a multiple input multiple output system Systems and methods for utilizing new communication standards in wireless local area networks are provided that also support legacy wireless stations. The method can include user equipment determining channel state information, selecting a unitary channel decomposit... | 12/13/2011 |
| 8031798 | Group MMSE-DFD with rate (SINR) feedback and pre-determined decoding order for reception on a cellular downlink A method for decoding and rate assignment in a wireless channel, where all dominant transmitter sources use inner codes from a particular set, comprising the steps of: i) estimating channel matrices seen from all dominant transmitter sources in response to a pilot o... | 10/04/2011 |
| 8031799 | Multi-pair gigabit ethernet transceiver Various systems and methods providing high speed decoding, enhanced power reduction and clock domain partitioning for a multi-pair gigabit Ethernet transceiver are disclosed. ISI compensation is partitioned into two stages; a first stage compensates ISI components i... | 10/04/2011 |
| 8031797 | Interference power estimating device and interference power estimating method The present invention relates to an interference power estimating device that estimates interference power with high accuracy. The interference power estimating device includes a reference symbol acquiring unit acquiring a reference symbol corresponding to each of t... | 10/04/2011 |
| 8023583 | Method and/or system for estimating phase noise error Embodiments of methods and/or systems for estimating phase error noise are disclosed. ... | 09/20/2011 |
| 8023584 | 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 ... | 09/20/2011 |
| 8009756 | Peak suppressing and restoring method, transmitter, receiver, and peak suppressing and restoring system A peak suppressing and restoring method includes suppressing a peak of a signal, starting suppression when a suppression start value is lower than a suppression target value, using a function of a gain characteristic such that a peak amplitude value attains the supp... | 08/30/2011 |
| 8000404 | Method and apparatus to reduce the effect of crosstalk in a communications interface A technique for reducing crosstalk between communications paths includes scrambling data using scrambling functions that reduce or substantially minimize a probability that worst-case data patterns occur on communications paths adjacent to a potential victim communi... | 08/16/2011 |
| 7986744 | Prescribed response precoding for channels with intersymbol interference Methods and apparatus are provided for prescribed response precoding schemes for signal transmission in channels with intersymbol interference. An embodiment includes generating a prescribed feedback filter polynomial as the quotient of a feedback filter polynomial ... | 07/26/2011 |
| 7936840 | Demodulator for a multi-pair gigabit transceiver A feedforward equalizer for equalizing a sequence of signal samples received by a receiver from a remote transmitter. The feedforward equalizer has a gain and is included in the receiver which includes a timing recovery module for setting a sampling phase and a deco... | 05/03/2011 |
| 7929636 | Techniques for reducing precoding overhead in a multiple-input multiple-output wireless communication system A technique of operating a wireless communication device in a multiple-input multiple-output wireless communication system includes receiving, at a first wireless communication device, recommended precoder information from a second wireless communication device, whi... | 04/19/2011 |
| 7912142 | Double layer maximum ratio combining for an OFDM receiver with inter-carrier-interference cancelling An apparatus, method, and system for reducing a C/N in an OFDM receiver using diversity combining techniques in the presence of ICI, wherein the apparatus comprises an encoded data estimator adapted to estimate data received in the OFDM receiver; a pair of ICI estim... | 03/22/2011 |
| 7873114 | Method and apparatus for quickly detecting a presence of abrupt noise and updating a noise estimate An apparatus (100) and method (200) for detecting the presence of abrupt noise is provided. The method can include estimating (210) a subband energy of the signal, calculating (220) a peak-to-peak energy difference (345), and calcu... | 01/18/2011 |
| 7873115 | 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 ... | 01/18/2011 |
| 7864879 | System having a signal processor for detection of a signal type A system having a signal processor for detection of a signal type of a signal is disclosed. One embodiment includes a processor designed to determine a first variable which is characteristic of a first spectrum element of the signal spectrum, and to determine a seco... | 01/04/2011 |
| 7848446 | Reduction of peak-to-average-power ratio in a telecommunications system A single-carrier signal is generated from a number, N, of symbols in a way that results in a low PAPR. This includes generating an initial set of N complex frequency components from the N symbols. Ns different sets of N complex frequency components are ge... | 12/07/2010 |
| 7809076 | Adaptive interference canceling system and method A communication system adaptively cancels noise and/or interference from signals communicated through a communication channel, such as signals communicated by a telecommunication network. The system, based on a common mode signal of a received signal, generates an e... | 10/05/2010 |
| 7801240 | Multi-pair gigabit ethernet transceiver Various systems and methods providing high speed decoding, enhanced power reduction and clock domain partitioning for a multi-pair gigabit Ethernet transceiver are disclosed. ISI compensation is partitioned into two stages; a first stage compensates ISI components i... | 09/21/2010 |
| 7801241 | Multi-pair gigabit Ethernet transceiver Various systems and methods providing high speed decoding, enhanced power reduction and clock domain partitioning for a multi-pair gigabit Ethernet transceiver are disclosed. ISI compensation is partitioned into two stages; a first stage compensates ISI components i... | 09/21/2010 |
| 7787557 | Apparatus for equalizing clipping noise signals of receiver systems and method thereof An apparatus for correcting clipping distortion of a receiver system includes: an equalizer which generates a first equalization signal by equalizing a frequency domain clipping signal via a first equalization coefficient correcting a channel distortion, and generat... | 08/31/2010 |
| 7778345 | Distortion compensation in a communication system In one embodiment of the invention, a modulator mixes a transmit-path signal based on a local oscillator (LO) signal and an amplifier amplifies the mixed transmit-path signal to generate an output signal for transmission. A demodulator generates a receive-path signa... | 08/17/2010 |
| 7773687 | Wireless apparatus, wireless communication system, and transmission mode selecting method A wireless apparatus 1 receives reception quality information, propagation environment information, and block error rate detection information from a wireless apparatus of the other end of communication together with a data signal, and the target error rate s... | 08/10/2010 |
| 7769100 | Method and apparatus for cancellation of cross-talk signals using multi-dimensional coordination and vectored transmission In a method of canceling crosstalk signals, decoding or precoding through a diagonal channel analysis of the user domain and the time domain is performed, in addition to decoding or precoding in the user and time domains. ... | 08/03/2010 |
| 7769099 | High-speed precoders for communication systems The invention relates to techniques for implementing high-speed precoders, such as Tomlinson-Harashima (TH) precoders. In one aspect of the invention, look-ahead techniques are utilized to pipeline a TH precoder, resulting in a high-speed TH precoder. These techniqu... | 08/03/2010 |
| 7769101 | Multi-pair gigabit ethernet transceiver Various systems and methods providing high speed decoding, enhanced power reduction and clock domain partitioning for a multi-pair gigabit Ethernet transceiver are disclosed. ISI compensation is partitioned into two stages; a first stage compensates ISI components i... | 08/03/2010 |
| 7724836 | Method and receiving unit for compensation for a frequency offset and/or for a change in the phase of a transmission channel over time by receiver-end evaluation of edge symbols of a received data burst In order to compensate for a frequency offset or a change in the phase of the transmission channel over time during mobile radio transmission of data symbols, the data symbols are transmitted by way of carrier-frequency, modulated data bursts. Sample values of the r... | 05/25/2010 |
| 7720170 | Low emission signal generator and distributor system A low emission signal manipulating circuit for reducing emission of a given signal. This is accomplished by manupulating the signal and recovering the original signal. The inventive device includes a transmitter which modifies a given signal, a divider that resides ... | 05/18/2010 |
| 7688912 | Data pulse spectrum control The present invention reduces adjacent channel interference for a wireless peripheral device. A direct digital synthesizer generates a waveform having intermediate angular changes during a transition time between symbol intervals. After the transition time, the dire... | 03/30/2010 |
| 7630452 | Method and apparatus for an ultra-wideband radio utilizing MEMS filtering A method and apparatus for a UWB radio utilizing MEMS filtering is described. The method described includes receiving a pulse signal from a transmission station. Once received, a delay line including one or more taps is driven with the pulse signal. Once the pulse s... | 12/08/2009 |
| 7627054 | Device and method for improving the signal to noise ratio by means of complementary sequences A device and method for improving the signal to noise ratio by means of complementary sequences, consisting of the use of M complementary sets of sequences, understanding complementary as the sums of their autocorrelations, resulting in a Krönecker delta, the M val... | 12/01/2009 |
| 7599445 | Device for transmitting digital signals between mobile units with modification of the spectral characteristics A device for transmission of digital signals between two units movable relative to each other, particularly with non-contacting rotating data transmission devices, comprises an encoder on a transmitter side along a signal path for conforming a coding of the digital ... | 10/06/2009 |
| 7596183 | Joint optimization of transmitter and receiver pulse-shaping filters A method for jointly designing a transmitter pulse-shaping filter and a receiver pulse-shaping filter having respective filter coefficients includes defining one or more performance-related variables based on at least some of the filter coefficients of the transmitt... | 09/29/2009 |
