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7233618 |
Circuit configuration and method for transmitting digital signals
To transmit digital signals, binary signals are transformed into a series of pulses, the pulses being modulated in their pulse length as a function of an information content of the binary signals....
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7233620 |
Bandwidth-efficient wireless network modem
Wireless communication network dynamically assigning communicators to allocated channels by considering the interference and noise environment to maximize the number of communicators and effective...
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7231151 |
Cosite interference rejection system using an optical approach
A cosite interference rejection system allows cancellation of large interfering signals with an optical cancellation subsystem. The rejection system includes an interference subsystem coupled to a...
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7230978 |
Channel CODEC processor configurable for multiple wireless communications standards
A reconfigurable channel CODEC (encoder and decoder) processor for a wireless communication system is disclosed. A high degree of user programmability and reconfigurability is provided by the...
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7230977 |
Back-to-back modem repeater
A repeater having first and second communication terminals that receives signals at either of the terminals and transmits signals responsive to the received signals at the other of the terminals,...
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7227890 |
VDSL system based on DMT line coding, and method for determining length of cyclic prefix samples using the system
Disclosed is a VDSL (very high bit-rate digital subscriber line) system on the DMT line coding method basis and a method for determining a length of cyclic prefix samples using the system. The VDSL...
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7227889 |
Media access layer ping protocol for diagnosing cable modem links
Methods, apparatus, and computer-readable media are disclosed for performing diagnostic tests of a communication link between a headend and a cable modem without having to assign an IP address to...
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7227891 |
Transceiver employing training-while-working mode
A data communication transceiver, such as a PCM or xDSL modem, is operable in a training-while-working mode in which it both trains and communicates user data. In some embodiments, upon initiation...
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7224672 |
XDSL modem
A reception result of an analog signal transmitted from a local switch to a subscriber line, or a voltage difference corresponding to a line current is analyzed, and a transmission characteristic...
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7224723 |
Handshaking communication system and method for multiple xDSL
A system and method for handshaking multiple xDSL technologies is provided. More particularly, the present invention provides a means for new xDSL technologies such as VDSL to negotiate usage of...
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7221703 |
System and method for synchronizing sample rates of voiceband channels and a DSL interface channel
A system is provided for synchronizing a PSTN clock and a DSL clock. The system comprises a PSTN interface for transmitting and receiving voiceband samples, a data DSL transceiver for modulating...
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7215725 |
Enhanced channel parameter estimation in the presence of preamble erasures
A communication device processes a preamble in the presence of impulse noise. The communication device receives a preamble sequence that includes a plurality of preamble symbols and determines that...
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7209761 |
Method and system for protocol feature communication
A protocol feature communication method and system is disclosed. The method defines a bit stream identifying each feature of a protocol version. Each bit of the bit stream is set in either a first...
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7209516 |
ADSL system with improved data rate
An improved ADSL system with improved data rate is disclosed. In one embodiment, the upstream data bit rate is increased by extending the upstream transmission band. In another embodiment, the...
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7206338 |
Modem command interface for radio devices
A method of establishing a network may comprise formatting network establishment parameters into a standard modem command, sending the standard modem command, and extracting the network...
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7206317 |
OFDM communication system and method having a reduced peak-to-average power ratio
An OFDM system embeds sequence information in the transmitted signal that reduces peak average power ratio (PAP) with minimal impact on the overall system efficiency. A marker is embedded onto the...
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7203226 |
Methods and apparatus for data communication
A communication apparatus having a communication interface for communicating with a first remote entity, the first remote entity including a decoder capable of decoding data encoded according to a...
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7203227 |
All digital reference frequency locking
All digital reference frequency locking. An all digital approach is provided for operation within one or more CMs within a cable modem communication system to lock the upstream of the one or more...
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7203228 |
Method and apparatus for assigning addresses to components in a control system
A method and an apparatus for remotely controlling locomotives in a railway environment using radio frequency signals are provided. A remote operator programming unit (OPP) is used to set address...
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7203248 |
Impairment sensitive selection of constellation points for communication across a channel
An impairment compensation sequence for use in a communications system susceptible to one or more potential impairments each periodic in an integer number of symbols includes N phases, wherein N is...
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7203241 |
Methods and apparatus for adaptive PCM level estimation and constellation training
Systems compensate for the presence of digital impairments using adaptive constellation techniques. Sample magnitudes are estimated from received samples transmitted during a training period using...
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7200176 |
Transformerless ethernet controller
Transformerless ethernet controller. A method for isolating an ethernet controller, having a transceiver associated therewith, from a twisted wire transmission line is provided. The power supply of...
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7200169 |
DSL modem apparatus and initialization method for DSL communication
An ADSL modem apparatus including an IFFT unit that performs an inverse fast Fourier transform on transmission data, an FFT unit that performs a fast Fourier transform on reception data, and a...
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7200168 |
Stable operation of media gateway
A method of scheduling a processor to handle a plurality of connections with respective processing cycles. The method includes estimating, for at least one of the connections, whether the...
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7197489 |
Methods and apparatus for maintaining object data for components in a network
Mechanisms and techniques are disclosed that maintain managed object data associated with components in a network such as a storage area network by receiving management data associated with...
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7197330 |
Dual port wireless modem for circuit switched and packet switched data transfer
A dual port external wireless modem is disclosed. According to one embodiment, the external wireless modem receives command and control information over a primary serial port, and real-time data...
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7194024 |
Method for adaptive hybrid selection during ADSL modem training
The methodology accomplishes adaptive hybrid selection during ADSL modem training. The adaptive hybrid selection method maximizes performance for ADSL modems in the presence of various impairments...
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7194023 |
Loop extender with communications, control, and diagnostics
In accordance with the present invention, a Digital Subscriber Line (DSL) network for improving the transmission of DSL signals over a local loop is disclosed. The DSL network includes a loop...
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7191262 |
High-throughput UART interfaces
A modified universal asynchronous receiver transmitter (UART) device is provided with an auxiliary high speed parallel channel using supplementary FIFO buffers for the exchange of data. The...
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7190716 |
Line powered loop extender with communications, control, and diagnostics
A Digital Subscriber Line (DSL) network for improving the transmission of DSL signals includes a plurality of local loops for transmission of upstream and downstream DSL signals, control signals,...
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7190717 |
System and method for tone ordering in discrete multi-tone (DMT) modems
A system and method for reordering tones of a DMT signal within a communication system is described. Cross tone correlated noise in a received signal is identified and rearranged such that tones...
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7190715 |
Asymmetric digital subscriber loop modem
An asymmetric digital subscriber loop modem may achieve efficiency and cost reduction by providing a coder/decoder (codec) chip which transmits data externally of the chip when the data is at a...
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7187712 |
Efficient framing of overhead channel for ADSL modems
An efficient framing scheme is described for the transmission of frame overhead data in next generation ADSL modems. As a result of this new framing scheme, the available data rate for the...
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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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7187713 |
Method and apparatus for intelligent modem warm start
Modem start-up delay reduced by measuring condition of communications line upon connection termination. Variation between termination and start-up line conditions determines if cold or warm start...
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7187709 |
High speed configurable transceiver architecture
One or more configurable transceivers can be fabricated on an integrated circuit. The transceivers contain various components having options that can be configured by turning configuration memory...
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7184468 |
Method and system for implementing a conditional one's complement of partial address
Provided is a system and method for a modem including one or more processing paths. Also included is a number of interconnected modules sequentially arrayed along the one or more paths. Each module...
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7184467 |
Method to mitigate effects of ISDN off/on transitions in ADSL
The present invention provides for a method and apparatus for allocating data to subchannels used for ADSL transmission over a communication link which supports further system transmissions. An...
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7181236 |
Systems and methods for using a wireless modem card
A wireless modem card comprises a host interface configured to interface the wireless modem card with a host device of a first type. The wireless modem card can be configured to detect whether 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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7177350 |
Receiver transparent quiescent mode operation in a DSL transmission system
Operation of a digital subscriber line system in a power saving quiescent mode is described. A quiescent mode (Q-mode) is entered into from a steady-state or normal operation mode in which payload...
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7177658 |
Multi-media broadcast and multicast service (MBMS) in a wireless communications system
Techniques to implement MBMS services in a wireless communication system. In one aspect, a method is provided for processing data for transmission to a plurality of terminals. Frames of information...
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7177349 |
High impedance state for digital subscriber line transceivers on copper twisted pairs
The invention relates to methods and a high speed communication device that allow one of a plurality of high speed communication devices connected to a transmission line having a normal impedance...
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7173978 |
Method and system for turbo encoding in ADSL
In a coding system for asymmetric digital subscriber line (ADSL) communications, a method of encoding a sequence of information bits is provided comprising the steps of dividing the information...
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7173962 |
High-speed modem with uplink remote-echo canceller
A high-speed modem operates at speeds as high as 64 kbps in both the downlink direction from a digital modem to an analog subscriber and at an increased speed in the uplink direction from the...
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7173963 |
Method and apparatus for identifying the encoding type of a central office codec
A technique for identifying the encoding law utilized by a central office codec may be implemented in a receive modem. The encoding law, which is typically dictated by the country in which the...
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7170927 |
Methods and apparatus for an ADSL transceiver
An ADSL transceiver hybrid circuit uses one or more isolated couplers (optical couplers, capacitors, or the like) configured to minimize the transmit signal component in the receive signal path by...
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7170894 |
Establishment of an end to end virtual connection
A method for establishing an end-to-end virtual circuit is provided. The method includes establishing a permanent virtual circuit between customer premises equipment and a digital subscriber line...
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7167512 |
Communication method, communication apparatus, software program and computer-readable recording medium for avoiding delay in authentication due to interruption of communication
A communication method for enjoying service from a service providing system that provides predetermined service to a user after user authentication via a communication line and disconnects the...
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7167101 |
Method and apparatus for telemetry
A method and related apparatus for telemetry between downhole devices and surface devices. In particular, the methods and related apparatus may send a first datum of a first parameter in an...
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