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7616557 |
Method and apparatus for canceling intercarrier interference through conjugate transmission for multicarrier communication systems
A system and method for reducing ICI in multicarrier systems is disclosed. The system uses a primary transmission path to transmit a first signal using the same techniques as conventional OFDM and...
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7606315 |
Line sensor selection for quantifying alien crosstalk in a shared communications medium
In a communication medium including a first set A of n communication channels and a second set U of m communication channels, a method for selecting sensor channels in A for quantifying crosstalk...
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7602695 |
System and method for communicating in a multi-unit structure
A method of providing communications over a plurality of sets of twisted pair conductors connected to a plurality of communication devices located in a plurality of units of a multi-unit structure...
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7596079 |
System and method for communicating in a multi-unit structure
A system and method of providing communications over twisted pair conductors connected to a plurality of communication devices located in a plurality of units of a multi-unit structure is provided....
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7596078 |
Method and apparatus for reducing crosstalk in a structural health monitoring system
Methods and apparatus for reducing crosstalk in a structural health monitoring system. A pair of actuator input signals are sent to an actuator, each resulting in the transmission of stress waves...
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7593315 |
Cable diagnostics for 10GBASE-T transceivers
A 10GBASE-T transceiver that is capable of performing cable diagnostics. The transceiver is a physical layer device (PHY) that has four transceiver sections. Each section includes an input path and...
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7589536 |
Systems and methods for determining the configuration of electronic connections
Systems and methods for determining the configuration of a connection between two devices by measuring an electrical characteristic are provided. Using the measured electrical characteristic, a...
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7584259 |
System and method for providing service technicians access to dispatch information
A secondary source of dispatch information is provided in the event of a failure of a primary source of dispatch information. The second source of dispatch information can be accessed...
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7580344 |
Home phone line networking enhancements for multiple dwelling unit environments
A Home Phoneline system operating within a Multiple Dwelling Unit includes a Home Phoneline Access Multiplexer (HPAN) that services a plurality of Home Phoneline networks, each including at least...
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7577084 |
ISDN crosstalk cancellation in a DSL system
To reduce the ISDN crosstalk in an incoming DSL signal, a crosstalk canceller observes at least a portion of the crosstalk signal and reproduces an estimate of the crosstalk signal for at least a...
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7570685 |
System, method and apparatus for crosstalk cancellation
The present invention effectively cancels echo, near-end crosstalk and far-end crosstalk. A FEXT canceller is placed at the transmitter rather than at the receiver according to an aspect of the...
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7567666 |
Method and apparatus for crosstalk mitigation
A method and apparatus for noise cancellation in a multi-channel communication system is disclosed. In one embodiment this system is configured to cancel FEXT on a victim channel utilizing the...
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7551544 |
Power control of digital subscriber line
This invention relates to power control arrangements of digital subscriber lines. The invention controls parallel subscriber lines simultaneously in an organized way, based on the measurements of...
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7548599 |
Method and apparatus for reducing cross-talk with reduced redundancies
A method and apparatus are disclosed for reducing cross-talk in an unbalanced channel with a reduced number of redundancies. A cross-talk canceller is disclosed that uses a multi-dimensional finite...
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7542446 |
Space time transmit diversity with subgroup rate control and subgroup antenna selection in multi-input multi-output communications systems
A method and system transmits an input stream of data symbols in a multiple-input/multiple-output wireless communications system that includes M subgroups of transmitting antennas. A stream of data...
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7538804 |
Solid state image pick-up device and image pick-up system
A solid state image pick-up device has shields for suppressing deterioration in a ratio of an output signal to output noises caused by crosstalks, suppressing deterioration in a ratio of the output...
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7530004 |
Error correction apparatus using forward and reverse threshold functions
An error detection and correction apparatus includes three threshold logic units which make decisions based on current and previous bit values in a bit stream of block-coded data. One of the...
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7529176 |
Method and apparatus for determining a transmit PSD at a remote location
The present invention relates to a method for determining a transmit PSD over a remotely-deployed line, which method comprising the steps of:
modeling a first far-end crosstalk originating...
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7516033 |
Method and apparatus for identifying echo sources in a communication path
A method and apparatus for identifying echo sources in a communication path. A system that incorporates teachings of the present disclosure may include, for example, an echo measurement device...
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7512192 |
Phase conjugated vectoring of signals in telephone cables
A phase conjugation vectoring (PCV) of signals propagating in telephone cables of twisted pairs provides crosstalk free transmission therethrough. The cable is considered a non-uniform physical...
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7499487 |
System and method to mitigate interference in DSL systems
Systems and methods are disclosed for determining mitigating noise in multi-pair communication system. A receiver coordinated system can include an error estimator that estimates noise for a first...
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7489621 |
Adaptive puncturing technique for multicarrier systems
Various embodiments are described for adaptive puncturing techniques involving an adaptive bit loading block to select a modulation scheme and a puncturing pattern for each of a plurality of...
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7474884 |
Receiver
The present invention relates to a method for a digital receiver and a receiver exploiting second order statistics for adaptive co-channel interference rejection in wireless communication. It uses...
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7471670 |
Method and apparatus for reducing echo and crosstalk in a communication system
Methods and apparatus describe techniques for reducing interference signals in a communication signal. A communication signal is received through a receiver. The communication signal contains an...
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7436786 |
Telecommunications system for minimizing the effect of white noise data packets for the generation of required white noise on transmission channel utilization
Minimizing the effects of the requisite AGWN packets on transmission channel utilization without diminishing any of the aesthetic quality of the AGWN white noise on the voice or audio...
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7406028 |
Memory-efficient ADSL transmission in the presence of TCM-ISDN interferers
A method of communicating data across a channel that experiences near-end cross talk (NEXT) interference and far-end cross talk (FEXT) interference in alternate intervals. In one embodiment, the...
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7394752 |
Joint reduction of NEXT and FEXT in xDSL systems
Methods, apparatus, techniques and computer program products for joint reduction of crosstalk in a synchronized, time division duplexed DSL systems use sequential removal of NEXT interference...
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7369484 |
System and method for mitigating data flow control problems in the presence of certain interference parameters
A radar, or other repetitive interference, detection and data flow control system and method for RF data transmissions uses an RF detector and an omni directional antenna to detect radar or similar...
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7366086 |
Crosstalk reduction in a backplane employing low-skew clock distribution
A system for a backplane that employs i) an adjustment of positive-to-negative (P-N) driver skew of a transmit signal of a relatively high-speed differential driver to reduce far-end crosstalk, ii)...
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7352687 |
Mixed domain cancellation
A method and apparatus for reducing crosstalk in a multi-channel communication system is disclosed. In one embodiment, outgoing signals in a multi-channel environment are manipulated into a...
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7345988 |
System and method for providing crosstalk management for high-speed signaling links
The present invention relates in general to a method, apparatus, and article of manufacture for providing high-speed digital communications through a communications channel. In one aspect, the...
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7343171 |
Method and system for interrupting a dispatch call
The invention concerns a method ( 300 ) and system ( 100 ) for interrupting a dispatch call. The method can be practiced in a dispatch communications system ( 100 ) having at least a first...
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7336744 |
Digital baseband receiver including a cross-talk compensation module for suppressing interference between real and imaginary signal component paths
A digital baseband (DBB) radio frequency (RF) receiver used for receiving and processing a wireless communication signal. The DBB RF receiver includes a demodulator, an analog to digital converter...
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7315592 |
Common mode noise cancellation
A noise cancellation system configured to isolate and process a common mode noise signal to generate a cancellation signal. The cancellation signal is combined with a differential signal to cancel...
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7305216 |
Transmitting and receiving arrangement with interference signal suppression control
A transmitting and receiving arrangement is disclosed having a transmission path, a reception path, and a control device for suppression of interference signals which are produced by crosstalk from...
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7289554 |
Method and apparatus for channel equalization and cyclostationary interference rejection for ADSL-DMT modems
A method and apparatus for efficient filter structure for an enhanced operation of an ADSL-DMT modem on a subscriber loop with an environment consisting of ISDN interference. The method performs...
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7283460 |
Bus switch encoding for reducing crosstalk effects in buses
Data are transmitted over a bus including a plurality of lines, wherein energy is dissipated as a result of data transmission. Preferably, the data to be transmitted in parallel are partitioned in...
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7280463 |
Digital FM bandwidth control
The bandwidth of a first variable IF filter ( 5 ) for a neighbour channel suppression of a currently received channel, which first variable IF filter ( 5 ) is arranged in a first reception path of...
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7251213 |
Method for remote measurement of echo path delay
A method of measuring echo path delay in a circuit having echo cancellers after enabling an echo signal to pass through the echo cancellers. The known time for a given echo canceller to disable is...
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7190665 |
Blind crosstalk cancellation for multicarrier modulation
Crosstalk can be cancelled in a composite communication signal (y m ) which includes a primary signal component associated with communication data and which also includes a crosstalk signal...
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7187711 |
Modem wake-up in support of cross-talk cancellation in a modem pool environment
In a communications system having a first modem pool for communicating with a second modem pool, each modem pool including a plurality of modems and having at least one NEXT cancellation filter, a...
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7180936 |
Techniques to avoid G.HS false start due to FEXT
A method for preventing false starts during a handshake session involves the use of service identifiers for modem devices. The identifications are provided to one another for subsequent...
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7167511 |
Modem wake-up at steady state in a modem pool environment
In a communications system having a modem pool including native modems operating at steady state, a method is provided for modem wake-up at steady-state including measuring modem performance,...
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7164648 |
Ultra high speed crosstalk cancelling technique
An ultra-fast crosstalk cancellation technique characterizes crosstalk with a sample set representing NEXT generated by a single transmitted bit. During operation, transmit bit values of...
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7158563 |
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...
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7154845 |
Method and system for measuring crosstalk utilizing a crossbar switch
A method for measuring crosstalk in a data service system includes transmitting a signal using a first device. The first device is coupled to a solid state crossbar switch. The method includes...
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7142501 |
Method and apparatus for eliminating near-end crosstalk in a digital subscriber line system
A method and apparatus for eliminating near-end crosstalk in a communication network are disclosed. Crosstalk generated by communication occurring on a second line is detected on a first line and...
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7107031 |
Co-channel interference rejection in a digital receiver
The present invention relates to a method for a digital receiver and a receiver exploiting second order statistics for adaptive co-channel interference rejection in wireless communication. It uses...
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7106833 |
Automated system and method for management of digital subscriber lines
An automatic system for the provisioning, deployment and management of digital subscriber lines (DSL) in a telephone network uses data on loop composition, electromagnetic interference and...
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7106688 |
System and method for preventing phantom data communication links
A data communication system is provided that comprises a head-end switching system which comprises a plurality of communication ports. A port controller causes the ports to sequentially issue...
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