Abstract: An access node of a communication system is configured to control crosstalk between channels of the system. A set of L distinct and linearly independent pilot signals is generated, with each pilot signal having length n, where n>L such that L?n linearly independent n-tuples are available for use in detection and correction of impulse noise. In an illustrative embodiment, the L pilot signals are mutually orthogonal. The L pilot signals are transmitted over respective ones of the channels, and one or more of the pilot signals as received over their respective channels are processed to detect the presence of impulse noise. A crosstalk estimate corrected for the detected impulse noise is generated and utilized to control crosstalk between two or more of the channels.

Abstract: A compressor including an oil separator connected to a supply of compressed air, the oil separator including a chamber having a wall defining a cavity within the chamber, and a vent within the wall, wherein the vent is in communication with the supply of compressed air at a first end, and in communication with the cavity via a second aperture, and extends substantially parallel to an externally-facing surface of the wall.

Abstract: Apparatus for installing a cable into a tube with the assistance of a fluid drag acting on the cable within the tube, the apparatus including: driving means comprising a driving surface arranged to contact the cable substantially along the full driving surface length, for driving the cable into the tube, first measurement means for obtaining a first value indicative of a rate at which the installation means is driving the cable into the tube, second measurement means for obtaining a second value indicative of a rate at which the cable is travelling through the apparatus, a processor for detecting when the first value exceeds the second value, and for reducing the rate at which the installation means is driving the cable into the tube for the duration when the first value exceeds the second value.

Abstract: 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 access node obtains crosstalk estimates for the respective channels. The access node is configured to convert the crosstalk estimate for a given channel to a discrete transform domain, to substantially eliminate in the discrete transform domain one or more designated portions of the crosstalk estimate for the given channel, and to convert remaining portions of the crosstalk estimate for the given channel back from the discrete transform domain to obtain the corresponding denoised crosstalk estimate for the given channel. The access node may comprise one or more central offices of a DSL communication system.

Abstract: Techniques are disclosed for compensating for crosstalk using adaptation of data signals transmitted over respective channels of a communication system. For example, a method includes the following steps. A first set of estimated measures of crosstalk is obtained for at least a selected portion of a plurality of communication channels over which data signals are to be transmitted from a transmitter to at least a selected portion of a plurality of receivers. A first set of data signals based on the first set of estimated measures of crosstalk is adapted to generate a first set of adjusted data signals. The first set of adjusted data signals is transmitted to corresponding ones of the plurality of receivers. A second set of estimated measures of crosstalk is obtained for the selected portion of the plurality of communication channels. A second set of data signals for transmission based on the second set of estimated measures of crosstalk is adapted to generate a second set of adjusted data signals.

Abstract: A device for detecting a flow of air from an exit end of a tube fed into an entrance end of the tube, including a bore having a first section with a first size bore size and a second section with a second bore size, an obstruction located within the bore between the first section and the second section, the obstruction configured to obstruct air flowing from the first section to the second section, and fixing means to fix the device to the tube so that the bore communicates with the exit end of the tube, wherein in use, an air pressure sensor is used to compare air pressure within the first bore section and air pressure within the second bore section, so that a pressure differential is indicative of an air flow within the bore.

Abstract: A method of providing an interconnection between a network and service equipment, comprising: providing a network cable connected to the network; breaking out the network cable to expose a plurality of network fibers contained within the network cable; identifying one of the plurality of network fibers requiring interconnection with the service rack; providing an equipment fiber connected to the service equipment; making an interconnection between the identified one of the network fibers and the equipment fiber; storing the interconnected fibers in an interconnected fiber store; and storing at least some of the remaining un-interconnected network fibers at a store remote from the interconnected fiber store.

Abstract: In one aspect, a system is provided. In one embodiment, the system includes a plurality of wireless base stations that are located in a contiguous spatial coverage region of a cellular communication system. Each wireless base station that is configured to generate a coverage pilot beam to enable wireless mobile devices to set up spread spectrum wireless communication links with the generating wireless base station. The wireless base stations are configured to transmit data to the wireless mobile devices to cause a portion of the wireless mobile devices to reselect ones of wireless base stations for wireless communication links in a manner that reduces power load imbalances between the wireless base stations. The transmitted data is indicative of a set of shadow prices, wherein each of the wireless base stations is associated with a corresponding one of the shadow prices.

Abstract: A device for use with a conduit having a first conduit end and a conduit second end, into which conduit a cable can be installed using a flow of air into the first conduit end, the device being suitable for confirming that the flow of air is exiting the second conduit end, the device including a housing, means to enable connection of the device to the second conduit end, a light source, a detector arranged to detect a presence or absence of a light signal, and a light shield, wherein in use, the flow of air entering the device causes the light shield and at least one of the light source or the detector, to move to and to stay at a position relative to the other, permitting the detector to detect detections including one or more of a presence or absence of the light signal, an intensity level of the light signal, a change in the presence or absence of the light signal, or a change in the intensity level of the light signal.

Abstract: Please substitute the following amended Abstract for the Abstract as currently pending (deleted matter is shown by strikethrough and added matter is shown by underlining): Apparatus for accommodating an interconnection between a network and service equipment, comprising: network cable receiving means for receiving a network cable of the network, each network cable including a plurality of network fibers; service equipment fiber receiving means for receiving a service equipment fiber of the service equipment; an interconnected fiber store for storing connected fibers comprising the service equipment fiber interconnected to a selected one of the plurality of network fibers; a network cable store for storing unselected ones of the plurality of network fibers remotely from the interconnected fiber store, the network; and modifying means to modify the network cable store to protect the interconnected fibers.

Abstract: An access node of a communication system receives signals over respective first and second channels of the system, processes the signal received over the second channel and an initialization signal associated with the first channel to obtain estimated crosstalk coefficients characterizing crosstalk from the first channel into the second channel, introduces respective predetermined delays into the respective signals received over the first and second channels, and utilizes the estimated crosstalk coefficients to adjust the signal received over the second channel as delayed by the corresponding predetermined delay in order to compensate for the crosstalk from the first channel into the second channel. The first and second channels may comprise respective joining and active subscriber lines of a DSL system.

Abstract: A multiple-input, multiple-output (MIMO) communication system is configured to perform user scheduling and associated precoding. The system includes multiple terminals and at least one base station configured to communicate with the terminals. The base station is operative to obtain channel vectors for respective ones of the terminals, to select a subset of the terminals based on magnitudes of the respective channel vectors, to compute a precoding matrix using the channel vectors of the selected subset of terminals, and to utilize the preceding matrix to control transmission to the selected subset of terminals. The system may be, for example, a time-division duplex (TDD) multi-user MIMO system in which the multiple terminals comprise autonomous single-antenna terminals.

Abstract: A method of forming a cable having an elongate core, including positioning a records component proximate to the elongate core, and covering the records component with a cable covering which directly or indirectly urges the records component against the elongate core.

Abstract: A device for use with a conduit having a first conduit end and a conduit second end, into which conduit a cable can be installed using a flow of air into the first conduit end, the device being suitable for confirming that the air is flowing out from the second conduit end. In an embodiment, the device includes a housing, means to enable connection of the device to the second conduit end, a detector arranged to detect an electrical property change, and an actuator for causing an electrical property change detectable by the detector, wherein in use, the air flowing into the device causes the detector and the actuator to move relative to each other, causing an electrical property change detectable by the detector.

Abstract: During the production of recombinant proteins from gram negative bacteria, lipopolysaccharides (LPS, endotoxin) are released along with the protein of interest. In many instances, LPS will copurify with the target protein due to specific or non-specific protein-ILPS interactions. We have investigated the ability of alkanediols to effect the separation of LPS from protein-LPS complexes while the complexes are immobilized on anion or cation exchange chromatographic media. Alkanediols provide a safer alternative to the use of other organics such as alcohols or acetonitrile due to their lower toxicity and decreased flammability. In addition, they are less costly than many of the detergents that have been used for such purposes. LPS removal efficiency increased with increasing alkane chain length. 1,2-alkanediols were more effective than terminal alkanediols in the separation of LPS from protein LPS complexes.

Abstract: An access node of a communication system comprises a plurality of transmitters adapted for communication with at least one receiver over a plurality of channels. The access node is operative to obtain estimated crosstalk coefficients between a joining channel and an active channel, and to set a power level of at least one signal transmitted over the joining channel based on the estimated crosstalk coefficients. The access node obtains the estimated crosstalk coefficients by first obtaining a subset of the estimated crosstalk coefficients and subsequently determining additional ones of the estimated crosstalk coefficients by applying an interpolation process to the estimated crosstalk coefficients in the subset. The access node sets the power level of the signal transmitted over the joining channel in a manner that ensures maintenance of a desired performance characteristic for the active channel.

Abstract: A multi-channel processing module is arranged in series with multiple channels of a communication system. The processing module synchronizes downstream symbols among the channels, and synchronizes downstream symbols for at least a given one of the channels with upstream symbols for that channel. The synchronization of downstream symbols among the channels and the synchronization of downstream symbols for at least the given channel with upstream symbols for that channel are collectively achieved by adjusting downstream and upstream adjustable delay elements associated with respective downlink and uplink signal paths in the multi-channel processing module. The channels may comprise respective subscriber lines of a DSL communication system.

Abstract: An access node of a communication system comprises a plurality of transmitters adapted for communication with at least one receiver. The access node is operative to transmit pilot signals from respective associated ones of the transmitters, to estimate channel coefficients between the transmitters and the receiver, and to utilize the estimated channel coefficients to control at least one data signal sent by at least one of the transmitters. The pilot signals are partitioned into a plurality of sets of pilot signals such that pilot signals from the same set have respective subpilots that are orthogonal to one another and pilot signals from different sets have respective subpilots that are not orthogonal to one another but are instead quasi-orthogonal to one another. The pilot signals are associated with the respective transmitters based on the partitioning of the pilot signals into sets.

Abstract: An apparatus includes a transmitter configured to transmit symbols to one or more receivers via a plurality of communication channels of a physical communication link. The transmitter is configured to estimate a phase of one or more off-diagonal elements of a channel matrix for the physical communication link based on values of signal-to-interference-plus-noise ratios at the one or more receivers.

Abstract: A method involves performing a plurality of acts. The acts include transmitting a first signal stream to a first channel of a multi-channel communications medium while transmitting a second signal stream to a different second channel of the medium. The second signal stream is substantially temporally correlated to the first signal stream. The method includes receiving an SINR measured at a receiver configured to receive signals from the first channel. The SINR is measured while the receiver received the first signal stream. The method includes determining a channel matrix element between the first and second channels or a ratio of said channel matrix element to a diagonal element of the channel matrix. The act of determining is based on the received SINR.