Abstract: A method and apparatus is provided for communicating data over a ground power line between a vehicle and a ground terminal. In one example, a first power unit detects a signal indicating connection between the first power unit and a remote power unit. Responsive to detecting the signal, one or more modems associated with the first power unit automatically establish a data connection with one or more remote modems associated with the remote power unit. After establishing the connection between the one or more modems in the first power unit and the one or more modems in the remote power unit, the one or more modems in the first power unit exchange data with the one or more modems in the remote power unit over the power line. In one example, the first power unit may comprise an onboard power unit in a vehicle (e.g., aircraft) and the remote power unit may comprise a ground power unit. Alternatively, the first power unit may comprise a ground power unit and the remote power unit may comprise in a vehicle (e.g.

Abstract: A method of controlling a digital subscriber line (DSL) transceiver for use in transferring data over a DSL connection, the method comprising: monitoring operation of the DSL connection; detecting that the DSL connection is operating in a low power mode in which the signal power applied to the DSL connection by the DSL transceiver is at a first level below a power threshold value; increasing the signal power applied to the DSL connection to a second level above the power threshold value; recording data indicative of performance of the DSL connection with signal power applied to the DSL connection at the second level; and modifying DSL transceiver attributes based on the recorded data indicative of performance, to change operation of the DSL transceiver in transferring data over the DSL connection.

Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder encoding service data, a time interleaver interleaving the encoded service data, a mapper mapping the interleaved service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a frequency interleaver frequency interleaving data in the at least one signal frame by using a different interleaving-seed which is used for every OFDM symbol pair comprised of two sequential OFDM symbols, wherein the frequency interleaving is performed by using two memories, a modulator modulating the frequency interleaved data by an OFDM scheme and a transmitter transmitting the broadcast signals having the modulated data, wherein an interleaving-seed is generated based on a cyclic shift value and an FFT size of the modulating.

Abstract: A system may comprise a finite impulse response circuit configured to receive one or more samples of a first signal and generate an equalized signal based on the plurality of samples of the input signal and one or more updatable tap coefficients. The system may include an adaptation circuit configured to update the one or more updatable tap coefficients based on the plurality of samples of the input signal. The system may further comprise a recovery circuit configured to accumulate one or more retuning values based on the plurality of samples of the input signal and, in response to an error condition, generate one or more retuned tap coefficients for the finite impulse response circuit based on the one or more retuning values and replace the one or more updatable parameters with the one or more retuned parameters.

Abstract: For example in case of an OFDM multicarrier transmission system the transmission characteristics of subcarriers of a multicarrier transmission system using a plurality of antenna elements (3, 3?) can be adjusted. Particularly the power and the phase of the subcarriers can be adapted. To this object the subcarrier frequency channel (2, 2?) characteristics of the multicarrier transmission are detected (11, 11?) at the side of the transmitter (3). The power of each subcarrier is then distributed by a weighting unit (14, 14?). The subcarriers can be further pre-equalized (1, 1?) by dividing the subcarrier signal respectively by the sum of the squared magnitude of the frequency channel characteristics of all subcarrier signals or a frequency characteristic of the selected antenna element (3, 3?).

Abstract: Disclosed is a device and method for decreasing interference in a cable bundle. The device includes a plurality of concentration devices, an interference measurer, and a concentration device. Each concentration device accesses an uplink and provides a network service to a terminal through a cable bundle in an access section. An interference measurer is connected between the cable bundle and the terminal. The interference measure is configured to measure an interference signal by measuring a signal transmitted to the terminal through the cable bundle, calculate an interference coefficient for generating a quasi-interference signal, and transmit the same to the concentration devices. The concentration devices is configured to calculate an additional signal for offsetting an interference signal by using the interference coefficient, add the additional signal to the original signal, and transmit the additional signal to the cable bundle.

Abstract: A method of acquiring an Internet protocol (IP) address to control a standby mode of a set-top box, and the set-top box and a power management server performing the method are disclosed. The method may include determining whether a state of the set-top box changes from a broadcasting state in which a broadcasting service is provided to a passive standby state in which a network connection between the set-top box and a headend providing the broadcasting service is blocked, receiving state information associated with an IP address allocated to the set-top box for the network connection in response to the state of the set-top box changing to the passive standby state, and transmitting, to the set-top box, a state change command to maintain the network connection for the IP address allocated to the set-top box based on the received state information.

Abstract: Methods, systems, and computer readable media can be operable to facilitate the determination of an outdoor electronic unit (ODU)-type based upon a signal analysis. A device may perform an analysis of a signal received from an ODU, wherein the analysis identifies one or more properties of the signal, the properties including a peak frequency of the signal. The device may then compare the identified signal properties to one or more properties of one or more predetermined spectral configurations, each spectral configuration being associated with an ODU-type. The device may identify an ODU-type associated with a spectral configuration that includes at least one property overlapping a property of the analyzed signal, and the device may determine that the ODU is of the identified ODU-type. In embodiments, the device may determine whether the ODU is using a passive or active configuration.

Abstract: The present invention relates to a method for estimating a channel in a wireless communication system. In the method, a reference value is generated on the basis of a value indicating a non-Gaussian characteristic of an inter-cell interference signal and power values of received pilot symbols, the reference value is compared with each of the power values of the pilot symbols, at least one pilot symbol, which is relatively lightly damaged by the inter-cell interference signal, is selected, and a channel is estimated using the at least one selected pilot symbol.

Abstract: The present invention discloses a method for handling contact information in a communication device. The method can include a step of presenting content within a visual interface of the communication device. A contact detection algorithm can execute to detect contact items included in the content. A visual indication can be presented next to each detected contact item. User input can be received, which causes the communication device to perform a contact action relating to one of the contact items. The contact action can add contact information to an address book, can initiate a communication session, and/or can place the contact item in a memory space for later use by an application other than one in which the content was presented.

Abstract: A method and a first radio node for determining a first precoder to be used by the first radio node for sending a transmission to a second radio node. The first radio node measures a set of cross-channel responses. The first radio node encodes the set of cross-channel responses into a first code-book index using a quantization scheme. The first radio node sends the first code-book index to a central unit. The first radio node receives a second code-book index from the central unit. The first radio node obtains a second precoder by decoding the second code-book index. The first radio node determines the first precoder by compensating the second precoder while taking the quantization scheme and the co-operative interference mitigation scheme into account. The first radio node applies the first precoder to the transmission, to be sent by the first radio node, to the second radio node.

Abstract: A method for generating a non-uniform constellation is provided. The method comprises the step of performing a first process, the first process comprising the steps of: obtaining a first constellation defined by one or more parameter values; and generating a second constellation based on the first constellation using a second process. The second process comprises the steps of: obtaining a set of candidate constellations, wherein the set of candidate constellation comprises the first constellation and one or more modified constellations, wherein each modified constellation is obtained by modifying the parameter values defining the first constellation; determining the performance of each candidate constellation according to a predetermined performance measure; selecting the candidate constellation having the best performance as the second constellation.

Abstract: A method and apparatus for isolating voltages while transmitting data signals. In one embodiment of the method, a modulation circuit modulates a carrier signal using an input data signal. A demodulation circuit receives the modulated carrier signal via a first capacitor coupled in series between the modulation circuit and the demodulation circuit. The demodulation circuit also receives the carrier signal via a second capacitor coupled in series between the demodulation circuit and the circuit that generates the carrier signal. The demodulation circuit demodulates the modulated carrier signal using the carrier signal.

Abstract: Provided are a method and device for signaling configuration, sending or reception, the method for signaling configuration comprises includes: a base station configures the signaling describing the subframe bearing the Synchronization Track Reference Signals (STRS) for a carrier, and the base station does not send the STRS and/or the PSS/SSS in the carrier when the signaling configured is null, while the base station sends the PSS/SSS in the carrier in a predetermined manner and sends the STRS in the carrier according to the signaling configuration information when the signaling configured is not null; the base station sends the signaling to a User Equipment (UE); the UE receives the signaling sent by the base station, analyzes the signaling, and judges the PSS/SSS is not sent in the carrier when the signaling is null, or judges the PSS/SSS is sent in the carrier when the signaling is not null.

Abstract: Systems and methods are disclosed for producing a cyclically generated, continuous-phase, frequency-shift keying (CG-CPFSK) waveform which may be used for wired and/or wireless communication systems. Such waveforms may have a substantially constant modulus and have an underlying cyclic phase structure. Systems and methods are also disclosed for generating a waveform based on a cyclically continuous signal which may be subsequently translated into a radio frequency for transmission.

Abstract: Zero touch configuration support for a universal serial bus (USB) modem is described herein. For example, as described herein, an identifier of a modem connected to an access point may be determined. Location information corresponding to the access point may also be determined. Based on the identifier of the modem and the location information, the access point may select a particular configuration, for the modem, where the particular configuration is suitable for a geographical location associated with the location information.

Abstract: In a system according to one embodiment of the present disclosure, the system comprises a first device, a second device, a communications link, and a memory. The memory stores instructions that when executed by the system perform a method of communications link training. This method comprises requesting a speed change to a second speed for the first device communicating with the second device at a first speed via the communications link. A saved set of parameters are accessed for at least one of the first device and the second device. A first training cycle is performed for the first device and the second device at the second speed using the saved set of parameters for the at least one of the first device and second device. The reuse of parameters from a previous successful equalization training cycle reduces the time required to perform equalization training.

Abstract: In accordance with embodiments of the present disclosure, a method may include, during boot of a modular information handling system disposed in a chassis configured to receive a plurality of modular information handling systems and a plurality of modular information handling resources, pausing execution of a basic input/output system. The method may also include communicating a first indicator, wherein the first indicator causes a chassis management controller of the chassis to perform link optimization operations of a communication link between the modular information handling system and a modular information handling resource. The method may further include, in response to communication by the chassis management controller of a second indicator, the second indicator indicating completion of link optimization operations by the chassis management controller, unpausing execution of the basic input/output system.

Abstract: A subsea data collection and communication system is installed at a subsea interconnect point or subsea connector used for communication between subsea electrical, optical or hybrid electro-optical cables. The data collection and communication system is configured to collect system performance data such as voltage, current, optical pressure and the like from signals carried by the wires or fibers in cables connected to the connector unit, and may also collect data on environmental conditions from sensors installed in or on the connector unit, such as temperature, pressure, or sea water salinity sensors, and the like. The collected data is transmitted to a remote monitoring station or local hub for further processing to detect potential faults or performance degradation either at periodic intervals or on demand, using bi-directional Ethernet, CANBUS, a carrier frequency system over the cable power lines, optical signal over optical fiber, or wireless communication links over short distances.

Abstract: A system to implement a communication line coding scheme using a non-complex bit-to-symbol mapping, a forward error correction (FEC) coding, and an additive bit scrambler after the FEC at the PHY layer is provided. The system may be a part of or implemented by an automobile component. The system may be a PHY device configured to convert data from the MAC layer into 2D-PAM3 symbols that are transmitted across a communication link at a predetermined transmission rate, such as to be compliant with a communication standard. The PHY device may select characteristics of the conversion, such as the FEC coded symbol, based on the target transmission rate. The PHY device may include a transceiver, and may convert the data from MAC layer to PHY layer and back.

Abstract: Embodiments of the present invention provide a power control method, device, and system, and relate to the field of communications technologies. The method is applied to a vectoring system, where the vectoring system includes multiple lines, each line includes multiple subcarriers, and for each subcarrier, a crosstalk channel is formed between the multiple lines, and the method includes: obtaining a closed subcarrier set of the multiple lines according to line crosstalk channel information corresponding to each subcarrier of the multiple subcarriers, where the closed subcarrier set includes a subcarrier set required to be closed on the multiple lines; and sending the closed subcarrier set of the multiple lines to a transceiver, and closing, by the transceiver, a transmit signal on a subcarrier required to be closed on each line.

Abstract: An adaptive compensation control method for optical communications technologies, which includes acquiring optical label information of an optical signal, where the optical label information carries information about a destination receive port of the optical signal, determining, according to the information about the destination receive port of the optical signal, a switching path, in an optical switch switching matrix, of the optical signal, and determining an optical switch compensation value of the optical signal according to a preset compensation value of each optical switch cell on the switching path, where the optical switch compensation value is used to compensate the optical signal.

Abstract: In a method of interference avoidance for a capacitive sensor device, a transmitter signal is transmitted with a transmitter electrode of the capacitive sensor device. A resulting signal is received with a receiver electrode of the capacitive sensor device. The resulting signal corresponds to the transmitter signal. A first demodulated output is acquired by demodulating the resulting signal in a first way. A second demodulated output is acquired by demodulating the resulting signal in a second way, where the second way and the first way differ. A shift is made from using the first demodulated output for determining positional information to using the second demodulated output for determining positional information. The shift is based at least in part upon an amount of interference.

Abstract: Provided is a method for processing data samples from a plurality of data channels. The method may include obtaining a plurality of data samples from the plurality of data channels. Obtaining the plurality of data samples may involve successively obtaining a data sample from each data channel of the plurality of data channels. Successively obtaining a data sample from each data channel may be performed a plurality of times during a specified time period. Each data sample of the plurality of data samples may be associated with a respective sample time, and each respective sample time may be relative to a single specified reference point in time. The method may further include, for each data sample of the plurality of data samples, determining a time-dependent coefficient value that may correspond to the sample time associated with the data sample, and applying the determined time-dependent coefficient value to the data sample.

Abstract: Systems and methods for determining non-linear precoding coefficients are disclosed. In some embodiments, a method of determining non-linear precoding coefficients for transmitting at least one frequency tone on lines includes obtaining a channel matrix that relates an input of the lines to an output of the lines for the at least one frequency tone. The method also includes computing a metric for each line in a subset of the lines and determining a line order for the subset of the lines based on the metric for each line in the subset of the lines. The method also includes reordering elements of the channel matrix based on the line order for the subset of the lines to create a reordered channel matrix and determining the non-linear precoding coefficients based on the reordered channel matrix. This may provide a systematic way to sort lines and balance the bit rates between different lines.

Abstract: The system monitors a wireless device, detects when the device has failed or is not operating properly, and is able to remotely reset the device. The device may be reset remotely without a technician required to physically attend to the device. This out of band management allows for quicker, cheaper and more efficient handling of undesired states of a device, such as failure to operate. For a modem, the system may detect that the modem is not broadcasting a signal or is not communicating with the Internet or other network. The reset may be implemented through an access point in communication with the malfunctioning modem. For an access point, the system may detect that the access point is not communicating with a modem or another access point. The reset may be implemented by a neighboring access point or modem.

Abstract: The disclosure is directed towards a system and method for using a multicore processor to process a printer definition language (PDL). The system improves efficiency by supporting parallel processing of many commonly used PDLs, while also supporting serial processing of many legacy PDLs. When processing a PDL, the system relies on several stages, including a parsing stage, a printer drawings services stage, and a graphic services stage, which includes order generation. The system provides flexibility by permitting function calls of common PDLs to be either asynchronous requests or blocking synchronous requests. Because legacy PDLs are executed serially, legacy PDL requests are considered to be blocking synchronous requests. The system provides a level of abstraction at the PDL level by allowing multiple requests to be combined into a compound asynchronous request. The system also improves accuracy by notifying the original caller of a request about an error during error handling.

Abstract: Certain implementations of the disclosed technology may include systems and methods for data alignment without requiring an external synchronizing trigger. A method is provided that can include receiving a signal that represents a plurality of frames, each of the plurality of the frames include an optional data portion and a predetermined portion. The method includes sampling and buffering at least a portion of the received signal to produce a buffered digital sequence. The method includes processing, by a sequence alignment module, the buffered digital sequence using a known sequence, where the known sequence corresponds to the predetermined portion. The method includes determining, using the sequence alignment module, respective positions of the buffered digital sequence corresponding to the known sequence, comparing the known sequence with the buffered digital sequence at the respective determined positions, and outputting one or more parameters based at least in part on the comparing.

Abstract: There is provided an optical transmission device including: a generator configured to convert an electric signal into a plurality of parallel signals, modulate the plurality of parallel signals, shift center frequencies of spectra of the plurality of modulated parallel signals into different frequencies, so as to generate signals accommodated in a plurality of sub-channels each having different center frequencies, and generate a multiplexed signal by multiplexing the signals accommodated in the plurality of sub-channels; a transmitter configured to optical-modulate the multiplexed signal and transmit the optical-modulated signal to an optical reception device; and a controller configured to control a frequency spacing between adjacent sub-channels of the plurality of sub-channels, based on a monitoring result of reception characteristics of the signals accommodated in the plurality of sub-channels within the multiplexed signal in the optical reception device.

Abstract: The invention describes a method of performing re-synchronizations on a DSL line to optimize the synchronization rate of the line. The line is monitored over a period of time, and a stable SNR margin is determined, below which the line is observed to lose synchronization. Historical synchronization rates and associated SNR margins for the line are recorded, and the highest stable synchronization rate is determined as the historical synchronization rate that does not have any associated SNR margins below the stable SNR margin. The method attempts to optimize the synchronization rate of the line towards this highest stable synchronization rate. To do this, the current target SNR margin imposed by DLM is identified, for example, by interrogating the DLM system or by noting the SNR margin on the line immediately after the most recent synchronizations.

Abstract: There is provided spectrum shaping of a signal. A frequency-domain representation of the signal to be spectrum-shaped is provided. The signal is associated with a set of constellation points having a minimum distance. A spectrum-shaped signal is determined by altering a proper subset of the constellation points while maintaining the minimum distance between all of the constellation points. The spectrum-shaped signal is transformed into a time-domain signal.

Abstract: A method for monitoring a communication network, which includes a plurality of processing units which communicate with one another via a communication medium, a channel of the communication medium being measured using channel estimation; from a result of the channel estimation, a characteristic variable being produced; and, with the aid of the characteristic variable, a decision is made as to whether a manipulative change of the communication network has occurred.

Abstract: In an example, the present invention includes an integrated system on chip device. The device has a data input/output interface provided on the substrate member and configured for a predefined data rate and protocol. In an example, the data input/output interface is configured for number of lanes numbered from four to one hundred and fifty. In an example, the SerDes block is configured to convert a first data stream of N into a second data stream of M such that each of the first data stream having a first predefined data rate at a first clock rate and each of the second data stream having a second predefined data rate at a second clock rate.

Abstract: Systems and methods are provided for increasing or decreasing the transmission speed of a VSAT used in a satellite network. A VSAT may include an ASIC and an FPGA in a transmission block of the VSAT. The ASIC includes an ASIC transmit modulator configured to modulate an input information signal, and circuitry for bypassing at least a portion of the ASIC transmit modulator. The FPGA includes circuitry for receiving a signal bypassing at least a portion of the ASIC transmit modulator, and an FPGA transmit modulator configured to modulate the bypassed signal. In implementations, the system uses the ASIC to burst format an input information signal with a payload burst segment; bypasses a transmit modulator of the ASIC after burst formatting the input information signal with the ASIC; and uses an FPGA to insert additional burst segments into the ASIC burst-formatted signal.

Abstract: This document discloses a solution for operating a radio communication apparatus that exchanges narrowband control messages with other radio communication apparatuses, each control message comprising a pilot sequence and an identifier identifying a transmitter of the control message. The radio communication apparatus receives a broadband signal through a broadband radio receiver and correlates sub-bands of the received signal so as to detect a narrowband control message within the received broadband signal. Upon detection of the narrowband control message on a sub-band of the received broadband signal, the transmitter of the narrowband control message is determined from the identifier of the narrowband control message. It is also determined from the reception of the narrowband control message on the sub-band that the sub-band is preferred by the transmitter of the narrowband control message, and said sub-band is utilized in data communication with the transmitter of the narrowband control message.

Abstract: A power line communication system includes a master side transceiver of a master communication device, a slave side transceiver of a slave communication device, a power wire, and a ground wire. The master communication device includes a voltage changeover portion changing supply voltage in steps. The master side transceiver is connected to the slave side transceiver through the power wire and the ground wire. The slave side transceiver transmits first information to the master side transceiver by a differential transmission. The voltage changeover portion changes the supply voltage so as the master side transceiver to transmit second information to the slave side transceiver. A master communication device includes a master side transceiver and a voltage changeover portion.

Abstract: A data processing system including an interface and an encoder. The interface is configured to receive first symbols from one or more ports. The interface is configured to aggregate a predetermined number of the first symbols to provide second symbols. The encoder is configured to (i) generate a header, and (ii) encode the second symbols to generate third symbols, where the header indicates whether the third symbols include a set of control codes. Responsive to the third symbols including the set of control codes, the encoder is configured to generate a pointer for the set of control codes, where the pointer can assume more values than are in the set of control codes.

Abstract: Vectored communication devices and methods are provided for communication via a plurality of communication connections. Communication on at least some of the communication connections is switchable between a low power mode and a regular mode.

Abstract: One embodiment provides a network controller having physical interface (PHY) circuitry that includes transmitter circuitry configured to transmit data frames to a link partner over a channel link. The network controller also includes a link speed cycling module configured to cause the transmitter circuitry to transmit data frames to the link partner using at least one high rate link speed. The network controller also includes an equalization presets module configured to apply at least one equalization preset setting to the transmitter circuitry while the transmitter circuitry is transmitting the data frames to the link partner. The link speed module is further configured to cause the transmitter circuitry to dwell, for a transmitter dwell time period, for the at least one equalization preset setting at the at least one high rate link speed. The transmitter dwell time period allows the link partner to lock on to the transmitted data frames.

Abstract: A method of operating a device is disclosed. The method includes attempting communication between the device and a separate connecting device. The attempt utilizes a first resistance and determines whether communication is able to occur at a higher speed mode or lower speed mode. If communication is able to occur at the higher speed mode, using the first resistance, communication continues at the higher speed mode. If communication is not able to occur at the higher speed mode, another attempt through a second resistance is tried. The method again includes determining whether communication is able to occur at the higher speed mode through the second resistance. If communication is able to occur at the higher speed mode through the second resistance, communication continues at the higher speed mode. If communication is not able to occur at the higher speed mode, communication stays at the lower speed mode.

Abstract: Communication systems are described that use geometrically shaped constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. In several embodiments, the geometrically shaped is optimized based upon a capacity measure such as parallel decoding capacity or joint capacity. In many embodiments, a capacity optimized geometrically shaped constellation can be used to replace a conventional constellation as part of a firmware upgrade to transmitters and receivers within a communication system. In a number of embodiments, the geometrically shaped constellation is optimized for an Additive White Gaussian Noise channel or a fading channel.

Abstract: Various signal processing systems may benefit from appropriate control based on selected parameters. For example, feedforward-based signal or noise cancellation systems may benefit from adaptive frequency band weighting within time domain. A method can include receiving an input signal that is to be transmitted over a channel. The method can also include calculating an instantaneous frequency of the input signal. The method can further include applying the instantaneous frequency as an adaptive parameter in an adaptation performed relative to the input signal. The method can additionally include providing an output signal based on the adaptation.

Abstract: Systems and methods for implementing bi-directional synchronization propagation between first and second communication devices are provided. The devices are arranged in a loop-timing configuration. A method includes detecting, by the second communication device, a switching signal comprising an indication to switch a timing role of the second communication device and engaging, by the second communication device, in a synchronization handshake with the first communication device over a communication link based on the detection of the switching signal. Engaging in the synchronization handshake includes determining whether the first communication device is configured to support bi-directional synchronization propagation. The method includes switching the timing role of the second communication device based on the synchronization handshake.

Abstract: A power connector facilitates mounting and repositioning an electronic device via a magnetic field. The power connector can include a receptacle surface comprising a curved surface operable to mate with a curved contact surface of an electronic device, and a device-coupling mechanism operable to hold the curved contact surface of the electronic device pressed against the curved surface of the power connector device, while an angle of the electronic device changes with respect to the power connector. The power connector can also include a power-transfer mechanism operable to transfer at least power to the electronic device, without an electrical wire between power connector and the electronic device, while the angle of the electronic device changes with respect to the power connector.

Abstract: An embodiment of the present invention provides an adaptive channel bandwidth switching method, including: buffering service data to be sent; sending a first microwave frame to a receiving end device; performing a receiving configuration after processing the first microwave frame; continuously sending second microwave frames to the receiving end device; switching a configuration related to the symbol rate after receiving the second microwave frames; performing symbol synchronization; performing frame synchronization; performing equalizer convergence; sending a third microwave frame to the receiving end device after the receiving end device performs the equalizer convergence; performing a receiving configuration after processing the third microwave frame; stopping buffering the service data to be sent; and sending a fourth microwave frame to the receiving end device, so as to switch the channel bandwidth. The embodiment of the present invention provides an effective method for improving link availability.

Abstract: A fractional delay estimation module estimates a delay of a section of a forward processing path between a first point and a second point. The fractional delay estimation component determines an integer component and a fractional component of a first path delay based on a transform of a first vector inserted into the forward processing path at the first point and based on a transform of a first feedback vector received from a feedback path, determines an integer component and a fractional component of a second path delay in the forward processing path based on a third transform of a third vector inserted into the forward processing path at the second point and based on a fourth transform of a second feedback vector received from the feedback path, and further determines the estimated delay of the section based on a difference between the first and second path delays.

Abstract: At least one crosstalk probing sequence out of a set of orthogonal crosstalk probing sequences is assigned to the at least one respective disturber line for modulation at the given carrier frequency of at least one respective sequence of crosstalk probing symbols, and error samples are successively measured by a receiver coupled to the victim line at the given carrier frequency while the at least one sequence of crosstalk probing symbols are being transmitted over the at least one respective disturber line are fed back for crosstalk estimation. The received error samples are next correlated with at least one unassigned crosstalk probing sequence out of the set of orthogonal crosstalk probing sequences for detection of a demapping error in the received error samples.

Abstract: A multistage combining sub-system for a distributed antenna system (“DAS”) is disclosed. The combining sub-system can receive broadband uplink signals from remote units of the DAS. The sub-system can divide the received broadband uplink signals into sets of narrowband uplink signals. The combining sub-system can select subsets of narrowband uplink signals from the sets of narrowband uplink signals. The subsets can be selected based on the narrowband signals in the subsets having signal powers above a threshold signal power. The combining sub-system can combine the selected subsets of narrowband uplink signals for routing to a base station. Combining the selected subsets of narrowband uplink signals can involve excluding narrowband uplink signals that are not included in the selected subsets of narrowband uplink signals.

Abstract: An object is to provide an information processing apparatus and the like that can reduce power consumption of the information processing apparatus in downloading and installing. To achieve this object, whether or not there is system software update is confirmed in a low power consumption state in which only some of hardware components of the information processing apparatus are supplied with power and communication with a predetermined server can be performed. When there is the update, update data is downloaded, and at least some of the hardware components that are the update targets and that are not supplied with power in the low power consumption state are started to be supplied with power. Then, system update is executed. The series of processes are automatically executed without a user's operation.

Abstract: In one embodiment, a method for calibrating a full-duplex radio system includes transmitting, by a first radio transmitter, a first signal and receiving, by a first radio receiver, a first version of the first signal. The method also includes receiving, by a second radio receiver, a second version of the first signal and transmitting, by a second radio transmitter, a second signal. Additionally, the method includes receiving, by the first radio receiver, a received version of the second signal and determining a response from the second radio transmitter to the first radio receiver in accordance with the first version of the first signal, the second version of the first signal, and the received version of the second signal.