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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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7099371 |
Method for generating and allocating code pairs of orthogonal spreading codes
The present invention relates to an orthogonal spreading code in a code division multiple access (CDMA) mobile communication system, and more particularly, to a method for generating and allocating...
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7099282 |
Determining the effects of new types of impairments on perceived quality of a voice service
Empirically derived models are used to relate user perception to objectively measurable characteristics, under a criterion of nearly perfect co-variance between predicted MOS values and the...
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7098821 |
Receiving and transmitting signals having multiple modulation types using sequencing interpolator
In a wireless local area network (WLAN), receiving or transmitting signals having multiple modulation schemes can require the use of multiple clock rates. Providing these multiple clock rates...
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7089030 |
De-boosting in a communications environment
Systems and techniques are disclosed relating to communications. The systems and techniques involve transmitting to a remote location a first signal at a first energy level followed by a second...
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7081764 |
Interconnection and control of alien cross-talk test signal units
An alien cross-talking testing system employs a plurality of alien cross-talk test signal units, an alien cross-talk measurement unit and an interconnection base unit. Each alien cross-talk test...
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7081763 |
Test system and method for field measurement of alien cross-talk
An alien cross-talk method involves a victim cable and one or more disturber cables. The method encompasses a transmission of a RF test signal on each disturber cable between an alien cross-talk...
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7081762 |
Method and apparatus for measuring high speed glitch energy in an integrated circuit
A method and apparatus are provided for measuring high speed glitch energy between first and second. The method and apparatus induce a change in charge on the first node from a first charge level...
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7050388 |
Method and system for crosstalk cancellation
Signals propagating in one communication channel can generate crosstalk interference in another communication channel. A crosstalk cancellation device can process the signals causing the crosstalk...
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7046798 |
System and method for subliminal time domain duplexing
The present invention provides methods and apparatus for transmitting a data-bearing signal and a non-data-bearing signal. One embodiment comprises communicatively coupling a data-bearing signal...
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7046751 |
Dynamic allocation of NEXT cancellation filters in a modem pool environment
In a communications system having a modem pool for communicating via a communications channel, the modem pool including a plurality of modems and having a plurality A of NEXT cancellation filters,...
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7042934 |
Crosstalk mitigation in a modem pool environment
In a modem pool system capable of mitigating alien crosstalk, a system including a first modem pool including at least two modems, at least one protected line connected to one of the modems, at...
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7035400 |
Signaling Techniques in channels with asymmetric powers and capacities
An improved system and method for communicating information on a transmission medium is disclosed. The disclosed system and method provide improved communications on the transmission medium in the...
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7027537 |
Iterative multi-user detection
Methods and mechanisms for reducing the impact of cross talk interference in multi-carrier data transmission systems are disclosed. In one aspect, the invention relates to a method of canceling...
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7023937 |
Receiver window design for multicarrier communication systems
A receiver window design algorithm (210) is developed which minimizes the noise power of the demodulated multicarrier signal. The windows are effective on a variety of different channels and noise...
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7023910 |
Dual-line DSL system and method
A dual-line DSL system comprises a central office and a customer premises coupled by at least two communication paths that together provide a single high-bandwidth channel. An ADSL transceiver...
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7020068 |
Echo and crosstalk cancellation
A cancellation system comprises a channel circuit ( 11 ) for each noise source, such as echo in a particular cable pair. There are only eighty taps per channel, in two blocks (n_echo_a, f_echo_a)....
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7003602 |
Data bus
In apparatuses (1, 2, 3) controlled or operated via an I 2 C bus, it may be necessary to take measures to suppress interference signals at the data signal input/output of the respective apparatus...
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7002930 |
Method of optimal power distribution for communication systems
A method of optimally distributing signal power for multiple users over a xDSL or wireless channel considers uses computationally efficient tools to achieve improved crosstalk avoidance. The method...
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7002897 |
Multiple channel interference 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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6999583 |
Crosstalk identification for spectrum management in broadband telecommunications systems
Crosstalk between subscriber loops used to transmit different broadband services through the same bundled telephone cable is a significant limitation to providing digital subscriber line services....
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6999517 |
Method and apparatus for transmission of data on multiple propagation modes with far-end cross-talk cancellation
A digital telemetry system having improved data rate and robustness. The telemetry system has a data transmission cable having a first end and a second end, and is capable of transmitting data...
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6999504 |
System and method for canceling crosstalk
A method and apparatus are disclosed for reducing crosstalk in a telecommunication system. Broadly, the present invention utilizes a common mode signal to obtain additional information that can be...
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6990196 |
Crosstalk identification in xDSL systems
Methods, apparatus and systems for identifying crosstalk interference in xDSL systems are disclosed and are useful in a variety of xDSL systems to assist in the provisioning, maintenance and...
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6970516 |
Programmable polarity for high speed differential interfaces
A system generally having a first circuit, a second circuit, and a pair of non-crossing conductive paths. The first circuit may be configured to convert between (i) a serial signal on a first...
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6970415 |
Method and apparatus for characterization of disturbers in communication systems
A method and apparatus for identification of interference sources are disclosed.
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6965915 |
Communications system for the control of a communications terminal by a remote computer
The communications system has a communications terminal that transmits status data to a remote computer. The remote computer processes a program that generates an instruction sequence on the basis...
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