Abstract: A method performed in a radio access node includes the radio access node receiving a data for transmission to a second radio access node over a communication channel having an unlicensed spectrum. The method further includes, in response to receiving the data, the radio access node receiving a channel measurement signal over the communication channel. The method further includes the radio access node performing an N-point Fast Fourier Transform (FFT) on the channel measurement signal to produce a frequency domain signal with N bins. The method further includes the radio access node performing a power measurement on the frequency domain signal. The method further includes the radio access node analyzing the power measurement of the frequency domain signal. The method further includes the radio access node transmitting the data based on the analysis of the power measurement.

Abstract: A threshold computation circuit includes an input circuit, a maximum filter circuit, a minimum filter circuit, and a calculating circuit. The input circuit receives a discrete frequency signal from a digital filtering circuit. The discrete frequency signal is based on an S-FSK waveform received by an S-FSK receiver associated with the digital filtering circuit. The discrete frequency signal is representative of digital logic levels in a series of data frames modulated using S-FSK to form the S-FSK waveform. The maximum filter circuit adjusts a maximum amplitude parameter based on the discrete frequency signal and a predetermined threshold. The minimum filter circuit adjusts a minimum amplitude parameter based on the discrete frequency signal and the predetermined threshold. The calculating circuit adapts the predetermined threshold for a next data frame based on the maximum and minimum amplitude parameters. An integrated circuit and a method for computing the threshold are also disclosed.

Abstract: Methods and devices are discussed where a common bit loading table is constructed from minimum gain from a plurality of bit loading tables for different combinations of lines being in a transmit or quiet mode.

Abstract: Example embodiments of the invention perform updating of arc-fault detection protection software in a dual function/combination arc-fault circuit interrupter (DF/CAFI) device, without requiring any hardware changes to the device. Maintenance software running in a processor in the device synchronizes downloading the updated protection software as packets of modulated data from a host device, downloaded over an electric power line connected to the device. The modulated data on the power line is sensed by a current sensor of the device and is filtered, demodulated, and sampled by the device. The maintenance software then assembles packets of the demodulated and sampled data and loads them into memory in the device as the updated arc-fault detection protection software.

Abstract: A communication system includes a repetitive orthogonal frequency-division multiplexing (“ROFDM”) transmitter communicating with an ROFDM receiver. The ROFDM transmitter includes an ROFDM modulator, which includes a K-point Fast Fourier Transform receiving a block of time-domain data symbols and generating an initial orthogonal frequency-division multiplexing symbol. The initial orthogonal frequency-division multiplexing symbol is based on a block of frequency-domain data symbols corresponding to the block of time-domain data symbols. The initial orthogonal frequency-division multiplexing symbol includes an ending part. The ROFDM modulator includes an orthogonal frequency-division multiplexing symbol repeater generating a repetitive orthogonal frequency-division multiplexing symbol by repeatedly reproducing the initial orthogonal frequency-division multiplexing symbol.

Abstract: Proactive Echo Cancellation (EC) training may be provided. First, a plurality of Echo Cancelation Training Opportunities (ECTOs) may be identified in an upstream bandwidth allocation. Identifying the ECTOs may comprise identifying a corresponding plurality of mini-slots in a two dimensional time frequency space designated as not to be used for Upstream (US) traffic. Then Echo Cancelation Training (ECT) may be conducted for each of the plurality of ECTOs.

Abstract: An echo cancellation training method in a cable modern is provided, comprising receiving an echo cancellation service ID (EC SID) assigned for echo cancellation training, the cable modem receiving the EC SID from a cable head end in an information element (IE) in a map (MAP or P-MAP) defining a time and frequency of upstream transmission opportunities for the cable modem, the EC SID establishing when the cable modem may perform the echo cancellation training in a downstream channel allocated to the cable modem, transmitting an echo cancellation test signal upstream to the cable head end via an upstream channel allocated to the cable modem and in a time slot specified by the received EC SID in the map, and measuring noise in one or more downstream channels allocated to the cable modem, with the noise resulting from the transmission of the echo cancellation test signal on the upstream channel.

Abstract: A signal transmission device adapted to a camera includes a power input port, a boost converter, an Ethernet power circuit and a signal conversion circuit. The power input port is configured to receive an input power. The boost converter is configured to convert the input power to a boost power. The Ethernet power circuit is configured to output a DC power to the camera according to the boost power and to receive a data signal generated by the camera. The signal conversion circuit has a first interface electrically connected to the Ethernet power circuit and a second interface electrically connected to an operating system. The signal conversion circuit is configured to receive the data signal through the first interface and convert a format of the data signal, and further configured to transmit the converted data signal to operating system through the second interface.

Abstract: A wireless access system includes a baseband processing unit pool, an optical network unit and a remote radio head. The BBU pool may be connected to one or more ONUs, each of the ONUs may be connected to one or more RRHs, and the connection between each of the ONUs and the one or more RRHs may be implemented using a twisted pair. Embodiments can provide access, convergence and transport with a very large capacity from indoor antenna units to a centralized BBU as well as an easy installation, and thus they are cost economical for a large scale deployment of indoor wireless access. Furthermore, advanced wireless technologies, such as large scale MIMO and CoMP, can be supported.

Abstract: Coding sub-channel selection involves, in an embodiment, determining, from sub-channels that are defined by a code and that have associated reliabilities for input bits at input bit positions, a first number of the sub-channels to carry bits that are to be encoded. A second number of the sub-channels, greater than the first number, are selected. The second number of sub-channels are selected to provide exactly the first number sub-channels to be available to carry the bits that are to be encoded.

Abstract: A radio transmitter comprises transmitting circuitry and processing circuitry. The transmitting circuitry broadcasts a frequency modulation (FM) in-band on-channel (IBOC) radio signal, wherein the FM IBOC radio signal includes multiple subcarriers grouped into multiple frequency partitions. The processing circuitry is configured to receive input bits for transmitting; encode and puncture the input bits using forward error correction (FEC) encoding; distribute encoded input bits between a main encoded component and a backup encoded component, wherein encoded bits of the backup encoded component are delayed for a specified duration relative to encoded bits of the main encoded component; allocate the encoded input bits of the main and backup encoded components into frequency diverse sidebands of the FM IBOC radio signal; and modulate the encoded input bits for transmitting using the frequency diverse sidebands of the FM IBOC radio signal, wherein the modulation is a type of quadrature amplitude modulation (QAM).

Abstract: Certain embodiments herein are directed to enabling service interoperability functionality for wireless fidelity (WiFi) Direct devices connected to a network via a wireless access point. A WiFi Direct device may identify various other WiFi Direct devices on a WiFi network for performing a requested service, such as printing content or displaying content to a screen. In so doing, the device may share information associated with an access point to which the device is connected with the other devices, which may also share information associated with an access point to which they are connected. In this way, WiFi Direct devices may discover their connectivity with respect to other devices to utilize a broader array of connection options for implementing a desired service, and hence, may leverage application programming interface (API) modules directed at providing service interoperability functionality between software applications and services requested by the software applications.

Abstract: Methods and apparatus adapted to address asymmetric conditions in a multi-antenna system. In one embodiment, the multi-antenna system comprises a wireless (e.g., 3G cellular) multiple-input, multiple-output (MIMO) system, and the methods and apparatus efficiently utilize transmitter and receiver resources based at least in part on a detected asymmetric condition. If an asymmetric condition is detected by the transmitter on any given data stream, the transmitter can decide to utilize only a subset of the available resources for that stream. Accordingly, the signal processing resources for that data stream are adapted to mirror the reduction in resources that are necessary for transmission. The transmitter signals the receiver that it will only be using a subset of the resources available, and the receiver adapts its operation according to the signaling data it receives. The multi-antenna system can therefore reduce power consumption as well as increasing spectral efficiency on the network.

Abstract: A general-purpose integrated circuit capable of scaling to meet the requirements of a beamforming system for a wide range of applications and benefit from economies of scale is disclosed. The integrated circuit includes a delay and phase correcting engine in order to reference the incoming data to a common array center and steering direction. It also includes a frequency channelization engine to perform phase-shift beamforming tasks effectively and/or frequency channelize the output data stream. A flexible reconfigurable routing logic can be included, which allows a multiplicity of operation modes, and generates a multiplicity of linear combinations of the input and internally generated data streams.

Abstract: A modulation system and method for enabling communications across a noisy media environment is configured to employ a dynamically reconfigurable QAM modulation scheme and adjust transmission characteristics in response to information received in order to modify performance of system components.

Abstract: Disclosed is a method for performing transmission frequency control for a subscriber line of a customer premise device by a transmission control apparatus in an access network structure in which at least one network management device and a plurality of customer premise devices are connected through a bundle cable including a plurality of subscriber lines. The transmission control method includes: setting a partial frequency band in an entire service frequency band provided by the subscriber line as a transmission frequency band of the customer premise device; and varying the transmission frequency band in the entire service frequency band when a triggering event occurs, in which traffic of the customer premise device is transmitted and received in the transmission frequency band.

Abstract: A multi-level pulse-amplitude modulation receiver system includes an analog equalizer, a digital equalizer, an automatic level tracking engine and an automatic gain controller. The analog equalizer and the automatic gain controller perform signal compensation on a multi-bit quasi-attenuation signal to generate a multi-level compensation signal. The digital equalizer receives the multi-level compensation signal, the positive threshold voltage and the negative threshold voltage, and thereby converts the multi-level compensation signal into a plurality of digital data. The automatic level tracking engine uses the digital data to generate a positive threshold voltage, a negative threshold voltage, at least two positive DC level voltages, and at least two negative DC level voltages, and the positive threshold voltage is an average of the two positive DC level voltages to avoid the nonlinear effect of the analog front end.

Abstract: A DC-DC converter includes a power oscillator connected to a first transformer winding, and a channel conveying a data stream through galvanic isolation by power signal modulation. A rectifier rectifies the power signal to produce a DC voltage. A comparator produces an error signal from the DC voltage and a reference voltage. An analog-to-digital converter converts the error signal to a digital power control value. A multiplexer multiplexes the digital power control value with the data stream to obtain a multiplexed bitstream. A transmitter driven by the multiplexed bitstream performs amplitude modulation of the power signal at a second transformer winding. A receiver connected to the first winding demodulates the amplitude modulated power signal. A demultiplexer demultiplexes the data stream and the digital power control value. A digital-to-analog converter converts the digital power control value to an analog control signal for the power oscillator.

Abstract: In a first embodiment, method and apparatus for encoding a first spectral efficiency into a second spectral efficiency; wherein the second spectral efficiency has a higher order than the first spectral efficiency. In a second embodiment, a method and apparatus for achieving at least two spectral efficiencies using a single type of modulation.

Abstract: A communication device and a method for communication is provided. The communication device includes a first subscriber identity module, a second subscriber identity module, a first baseband circuit associated with the first subscriber identity module, a second baseband circuit associated with the second subscriber identity module and a radio frequency circuit coupled to the first baseband circuit and the second baseband circuit. The radio frequency circuit is configured to provide at least one of the first baseband circuit or the second baseband circuit with a collision information about a transmission collision or receiving collision of data associated with the first baseband circuit or the second baseband circuit.

Abstract: Disclosed are a data transmission method and apparatus. The method includes: a transmission node acquiring information about a data transmission mode, herein the information about the data transmission mode includes a rapid data transmission mode in which a time-domain length of data transmission is configured based on a time-domain symbol; and the transmission node transmitting data according to the acquired data transmission mode. In the data transmission method, the time-domain length of data transmission is configured based on the time-domain symbol, the setting of the time-domain length of data transmission is flexible, multiple opportunities of data transmission can exist in one subframe, resources used for data transmission can be guaranteed to be found rapidly when there is a data transmission demand, thus rapid data transmission is realized and data transmission delay is reduced.

Abstract: A wearable multifunction device or earpiece or a pair of earpieces includes one or more processors, at least one microphone coupled to the one or more processors, a biometric sensor coupled to the one or more processors, and a memory coupled to the one or more processors, the memory having computer instructions causing the one or more processors to perform the operations of sensing a remaining battery life and based on the sensing, prioritizing one or more of the functions of always on recording, biometric measuring, biometric recording, sound pressure level measuring, voice activity detection, key word detection, key word analysis, personal audio assistant functions, transmission of data to a tethered phone, transmission of data to a server, transmission of data to a cloud device.

Abstract: Provided are a computer program product, system, and method for fixing anomalies in a preserved data structure used to generate a temporary data structure during system initialization. A preserved data structure in persistent storage is used to build a temporary data structure in a memory of the computing system during initialization of the computing system. The temporary data structure represents computational resources in the computing system and is rebuilt from the preserved data structure during the initialization. The preserved data structure and the temporary data structure are processed to determine whether the preserved data structure includes at least one anomaly that would result in rebuilding the temporary data structure with an error. Information on the preserved data structure and the temporary data structure having the anomaly are processed to determine modifications to correct the preserved data structure. The determined modifications are processed to correct the preserved data structure.

Abstract: A method for detecting interference in a wireless system is disclosed. The method includes receiving an uplink signal at a remote radio head in a distributed base station, passing the uplink signal from the remote radio head to a baseband unit over a front-haul communication link as baseband IQ data, and intercepting the baseband IQ data at a tester coupled between the remote radio head and the baseband unit. Processing of the IQ data is performed to determine whether an interfering signal is present in the uplink signal.

Abstract: Devices and methods described herein decode a sequence of coded symbols by guessing noise. In various embodiments, noise sequences are ordered, either during system initialization or on a periodic basis. Then, determining a codeword includes iteratively guessing a new noise sequence, removing its effect from received data symbols (e.g. by subtracting or using some other method of operational inversion), and checking whether the resulting data are a codeword using a codebook membership function. This process is deterministic, has bounded complexity, asymptotically achieves channel capacity as in convolutional codes, but has the decoding speed of a block code. In some embodiments, the decoder tests a bounded number of noise sequences, abandoning the search and declaring an erasure after these sequences are exhausted. Abandonment decoding nevertheless approximates maximum likelihood decoding within a tolerable bound and achieves channel capacity when the abandonment threshold is chosen appropriately.

Abstract: A communication system and method is described, comprising of two or more locations in which an artificially modulated ionized region is created at one or more locations and either passively or actively remotely sensed from another distant location, to create a communication exchange between locations which may lie over-the-horizon from one another. The height of the artificially modulated ionized region may be adjusted in altitude, to optimize the communications link for either maximum distance, or low latency. The system and method may use radio frequencies ranging from 400-2400 MHz, at power levels ranging from 1-10 MW to remain above a threshold where the negative effects of atmospheric ducting may occur, but also low enough to avoid the negative effects of rain fading at higher frequencies. This frequency range may be optimal for reliable use in adverse weather conditions and able to produce data rates that are commercially viable.

Abstract: An antenna system is provided. In one example implementation, the antenna system may include a modal antenna that is operable in a plurality of different modes, and each mode may be associated with a different radiation pattern. The antenna system may include a tuning circuit configured to operate the modal antenna in the plurality of different modes. A transmission line may couple a radio frequency circuit to the modal antenna. The radio frequency circuit may be configured to modulate a control signal onto an RF signal using amplitude-shift keying modulation to generate a transmit signal for communication over the transmission line to the tuning circuit. The tuning circuit may be configured to demodulate the control signal such that the radio frequency circuit can adjust a mode of the modal antenna via the control signal. In some embodiments, the amplitude-shift keying modulation may include on-off keying modulation.

Abstract: Embodiments of the present invention provide a data sending and receiving method, an apparatus, and a system. The method can be executed by a microwave device, which includes: obtaining a control word (CW) and a first antenna-carrier (A×C) from a common public radio interface (CPRI) frame; modulating the CW to obtain in-phase/quadrature (I/Q) data of the CW; determining a first timeslot in which the first A×C does not carry antenna-carrier I/Q data; writing a preset synchronization sequence, first information, and a random number in the first timeslot to generate a second A×C; and combining the second A×C with the I/Q data of the CW to generate a microwave air interface frame, and sending the microwave air interface frame in a time division multiplexing manner.

Abstract: An apparatus for analyzing one or several radio systems is provided, having: one or several radio-frequency units for generating one or several baseband signals from one or several radio signals, a spectral analysis module for performing spectral analysis, wherein one of the baseband signals is transformed to a time-frequency domain in order to obtain a spectrogram in the time-frequency domain, one or several demodulators for generating several demodulated radio packets of the one or several radio systems from the one or several baseband signals, the demodulators providing additional information for the demodulated radio packets, a spectrogram analyzer for detecting radio packets found in the spectrogram in the time-frequency domain and for establishing one or several characteristics for each radio packet found based on the spectrogram in the time-frequency domain, and a synchronization module configured to determine one or several pairs, wherein each pair has precisely one demodulated radio packet of the dem

Abstract: The present disclosure provides example channel parameter estimation methods and related apparatuses. In one example method, a cable modem (CM) obtains a second data frame through a downlink channel between the CM and a cable modem termination system (CMTS). The second data frame is generated after a first data frame sent by the CMTS is modulated through the downlink channel, a zero-bit-loaded symbol of the first data frame includes no valid codeword, but includes a zero-bit-loaded NCP and an idle codeword identified by the zero-bit-loaded NCP, and the idle codeword includes a data sequence used for channel parameter estimation. The CM can estimate a channel parameter of the downlink channel based on a data sequence in an obtained zero-bit-loaded symbol of the second data frame and the data sequence in the zero-bit-loaded symbol of the first data frame.

Abstract: Circuits and systems may be operable to provide improved wireless networking performance in the presence of a high speed wired interface. Filter circuits may be applied to wired interface leads to suppress frequency content that may interfere with wireless home networking. High speed digital wired interface systems on a chip may similarly be altered to suppress interfering frequency content before it leaves the chip. Systems with reduced radiated energy from wired interface circuits in frequencies of interest to wireless networking have improved wireless range and throughput characteristics.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for monitoring energy consumption. In one aspect, a method includes sending, to a power monitor of a circuit board, requests for power consumption data. The requests are sent periodically based on a reference clock that is located external to the circuit board and that is more accurate than a clock of the power monitor. Each request is for an accumulated amount of power for components of the circuit board. In response to each request, power consumption data is received from the power monitor. The power consumption data specifies the accumulated amount of power for the components of the circuit board since a previous request sent to the circuit board. An amount of energy consumed by the components of the circuit board over a time period is determined based on the received power measurements and the time period.

Abstract: A device is disclosed. The device includes a wire board including metallic wiring and a first microchip connected to the metallic wiring. The first microchip includes a first radiating element configured to operate a first frequency. The device further includes a second microchip connect to the metallic wiring. The second microchip includes a second radiating element configured to operate at the first frequency. A main radiating element is also included. The main radiating element is configured to operate at a second radio frequency. The first microchip and the second microchip are physically placed such that the first radiating element faces the second radiating element.

Abstract: A high-speed digital transmitter for wireless communication systems includes a plurality of transmitter chain circuits configured to respectively receive incoming component signals having a first frequency and to produce outgoing transmission signals having a second frequency greater than the first frequency in a first domain. In some aspects, the incoming component signals are up-sampled to the second frequency using a plurality of streams processed concurrently at a predetermined sample rate over a predetermined number of interpolation filter stages in each of the plurality of transmitter chain circuits. The high-speed digital transmitter also includes a serializer configured to combine the outgoing transmission signals from the plurality of transmitter chain circuits into a serialized transmission signal having a third frequency greater than the second frequency in a second domain different from the first domain.

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 constellations 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: The present invention relates to the field of mobile communications technologies. The methods for sending and receiving a signal are specifically: splitting a received digital signal into a first digital signal and a second digital signal, respectively converting the first digital signal and the second digital signal into an analog in-phase signal and an analog quadrature signal, respectively modulating the analog in-phase signal and the analog quadrature signal to two optical signals that are perpendicular to each other and are in a polarization state, combining, into one optical signal, the two optical signals that are perpendicular to each other and are in a polarization state, and sending the optical signal to an ONU; and performing, by the ONU, corresponding demodulation on the optical signal, and sending the optical signal to a user terminal.

Abstract: A method for interactive response and an apparatus thereof are provided. The method includes: establishing a connection with a service terminal; receiving display configuration corresponding to a service client on the service terminal; constructing an interactive interface based on the display configuration, and displaying the interactive interface on a user terminal; obtaining an input operation of a user on the interactive interface; generating feedback information based on the acquired input operation; and transmitting the feedback information to the service terminal. Establishing the connection with the serving terminal includes: the user terminal transmits a calling request to a network device; after establishing a Session Initiating Protocol (SIP) calling supporting text transmission between the network device and the service terminal, the user terminal receives a calling response message returned by the network device.

Abstract: A gateway device includes a first interface to connect to an internet protocol (IP) network and a second interface having a first communication protocol to connect to one or more devices. The gateway device receives an instruction to initiate an attribute update for a device from a remote server via the first interface, the first instruction having a first format. The gateway device determines the attribute update and a virtual device identifier associated with the first device from the first instruction. The gateway device determines the first communication protocol and a first device based at least in part on the first virtual device identifier. The gateway device generates a command for the first device to perform the first attribute update, the command having a second format based at least in part on the first communication protocol, and sends the command to the first device via the second interface.

Abstract: A method for transmitting, by a first relay user equipment (UE), signals by considering interferences in a further enhancement D2D (FeD2D) environment comprises the steps of: calculating, by the first relay UE, a distance to a virtual remote user equipment (UE) located on a straight line between the first relay UE and a second relay UE; determining an allowable interference intensity for the virtual remote UE, on the basis of a predetermined target signal to interference and noise ratio (SINR) value for the virtual remote UE and an intensity of a received signal from the second relay UE of the virtual remote UE; determining a transmission power on the basis of the allowable interference intensity and the calculated distance; and comparing the determined transmission power with a minimum transmission power that satisfies the target SINR, wherein the virtual remote UE may be located at a threshold of a target range of the second relay UE.

Abstract: The present disclosure provides, for example, methods for measuring interference to a cable modem (CM), and corresponding example apparatuses and systems. One example method includes sending, by a cable modem termination system (CMTS), a broadcast message to all CMs connected to the CMTS, where the broadcast message includes information designating one of the CMs to send a probing signal by using a spectrum S in a timeslot T. The CMTS can then broadcast a pseudo random binary sequence (PRBS) by using the spectrum S in a downlink direction in the timeslot T, and can obtaining modulation error ratio (MER) information recorded in the timeslot T by other CMs. A difference between MER information in the timeslot T and MER information in a normal data timeslot can be used, for each of the other CMs, as intensity of interference to the corresponding CM.

Abstract: A method for performing orthogonal frequency division multiplexing (OFDM)-offset quantization amplitude modulation (OQAM) includes obtaining a data burst. The method includes performing weighted circularly convolved filtering modulation on the data burst to produce an output signal. The method further includes a first wireless device transmitting the output signal to a second wireless device. The second wireless device receives an input signal from the first wireless device, and the second wireless devices performs weighted circularly convolved demodulation filtering on the input signal to produce the data burst.

Abstract: The solution presented herein discloses a method of transmitting first symbols via a transceiver comprising a receiver and a transmitter. The method comprises determining a timing discrepancy between a previous reference timing and a current reference timing. The current reference timing is established responsive to a reduced sampling rate used to process second symbols received by the receiver, where the reduced sampling rate is less than a minimum sampling rate at which an inter-symbol distance between the second symbols can be represented by an integer number of samples. The method further comprises adjusting the current reference timing responsive to the timing discrepancy to generate an adjusted reference timing, and determining an uplink transmission timing responsive to the adjusted reference timing. The method further comprises transmitting the first symbols via the transmitter according to the determined uplink transmission timing.

Abstract: Methods, systems, and devices for multiple concurrent modulation schemes in a memory system are described. Techniques are provided herein to communicate data using a modulation scheme having at least three levels and using a modulation scheme having at least two levels within a common system or memory device. Such communication with multiple modulation schemes may be concurrent. The modulated data may be communicated to a memory die through distinct signal paths that may correspond to a particular modulation scheme. An example of a modulation scheme having at least three levels may be pulse amplitude modulation (PAM) and an example of a modulation scheme having at least two levels may be non-return-to-zero (NRZ).

Abstract: A wakeup circuit includes an amplification stage circuit and a filter stage circuit. The amplification stage circuit is configured to, in response to receiving an input signal, generate an amplified digital signal that is proportional to the input signal. The filter stage circuit is configured to, in response to receiving a threshold number of toggles of the amplified digital signal within a pre-defined time period (such as one clock period of a clock signal), generate a wakeup signal as an output signal of the filter stage circuit.

Abstract: A system for noise profile generation includes a customer gateway communicatively coupled to one or more end devices over a communication medium, at least one noise information node communicatively coupled to the customer gateway and programmed to extract noise information present on a communication path from the customer gateway to at least one of the one or more end devices, a noise profile database storing one or more noise profiles, and a noise profile generator. The noise profile generator includes at least one processor and non-transitory computer readable media having a set of instructions executable by the at least one processor to retrieve the extracted noise information associated with the communication path, determine whether the at least one noise characteristic of the extracted noise information matches with one or more noise profiles and identify at least one noise source on the communication path.

Abstract: In a receiver transparent Q-mode, i.e., a Q-mode that is only implemented by a transmitter, the receiver is unaware of the Q-mode state of the transmitter. In this type of Q-mode configuration, the transmitter could enter and exit Q-mode as desired while the receiver, could, for example, continue to function as if operating normally, such as in “showtime.” Through this approach, it is not necessary for the receiver to detect the transmitter's entry and exit of Q-mode.

Abstract: Embodiments of active noise control (ANC) headphones and operating methods thereof are disclosed herein. In one example, a headphone for ANC includes a speaker, a microphone, an echo-cancel module, and an ANC module. The speaker is configured to play an audio based on a first audio source signal. The microphone is configured to obtain a mixed audio signal including a noise signal and a second audio source signal based on the audio played by the speaker. The echo-cancel module is configured to reduce the second audio source signal from the mixed audio signal based on the first audio source signal to generate an echo-cancel audio signal. The ANC module is operatively coupled to the echo-cancel module and configure to generate a noise-controlled audio source signal to be played by the speaker based on the echo-cancel audio signal and the first audio source signal.

Abstract: Method and apparatus for effecting a voice communication between user terminals connected via a communication network include displaying a menu of country options to a user and receiving a number in local form. Formatting rules are recalled for a destination country selected by the user from the country options. A country prefix for the destination country is prepended to the number in accordance with the formatting rules to generate a formatted number. The formatted number is supplied to a client installed at the user terminal for effecting the voice communication using the formatted number.

Abstract: Method for operating a network having a prescribable topology, wherein the topology contains a plurality of network devices which are connected to one another and interchange data via multiwire data lines connected to their data ports, wherein test messages are also sent to the data lines in order to check whether or not two data ports on two network devices have the connection between them via the interposed data line, characterized in that, in a prescribable time interval, the number of CRC errors which have occurred and the number of data items transmitted in this time interval are ascertained on a data line between two data ports, and at least these two values are used to calculate an error rate which is a measure of the operability of the multiwire data line.

Abstract: Provided is a wireless communication method performed at an access point to enhance the transmission efficiency in a wireless local area network (WLAN) system, the method including scheduling a transmission time of an enhanced traffic indicator map (TIM) frame based on a type of a station, and transmitting a second beacon including the enhanced TIM frame to the station at a point in time aside from a transmission point in time of a first beacon.