Abstract: The disclosure relates to secure data storage and retrieval, in particular to methods and circuits for securely storing data to reduce the possibility of leakage via side channel attacks. Embodiments disclosed include a method of storing a value comprising a series of words, the method comprising: i) combining in a series of XOR operations a word of a first portion of the value, a word of a second portion of the value and an output word of a first random number generator to provide a first combined word; ii) storing the first combined word in a shift register; and iii) repeating steps i) and ii) for each successive word of the first and second portions of the value.

Abstract: Aspects of the present disclosure describe methods of generating an optimized set of constellation symbols for an optical transmission network wherein the optimized constellation is based on GMI cost and considers both fiber nonlinearity and linear transmission noise.

Abstract: A method for implementing an upstream symbol alignment within a network component, the method comprising receiving an upstream sync signal via an initializing digital subscriber line (DSL) during a channel discovery phase from a customer premise equipment (CPE), determining a corrected upstream symbol alignment value based upon the upstream sync signal, and transmitting the corrected upstream symbol alignment value to the CPE, wherein the upstream symbol alignment value determines an upstream symbol alignment for one or more upstream transmissions, and wherein the corrected upstream symbol alignment value is determined before receiving a plurality of upstream data signals within the data symbol positions during the channel discovery phase.

Abstract: An access point device and method for: generating and transmitting a physical layer protocol data unit (PPDU) including a plurality of resource units on a bandwidth, where the plurality of resource units includes a first tone unit and a second tone unit. The first tone unit includes a total of 26 tones, where 2 pilot tones for the first tone unit are included in the total of 26 tones. The second tone unit includes a plurality of tones being greater than the total of 26 tones. The 4 pilot tones for the second tone unit are included in the plurality of tones. The locations of a plurality of pilot tones for the plurality of resource units are fixed when two first tone units are included in the plurality of resource units in place of the second tone unit.

Abstract: A method in a fixed point-to-point radio link transceiver, the method comprising the steps of receiving a first signal from a far end transceiver in a first frequency band, and detecting the presence of interference in the received first signal, as well as transmitting a second signal to the far end transceiver. The step of transmitting comprising including, in the second signal, a request to reduce transmission symbol rate in the far end transmitter when interference is detected in the received first signal.

Abstract: A method and device are described for transmitting a text message over a voice call. The method includes initiating a Session Initiation Protocol (SIP) session for the voice call wherein the SIP session comprises at least one of a Session Initiation Protocol (SIP) INVITE request and a SIP INFO request. The method includes inserting a text message in at least one of the SIP INVITE request and the SIP INFO request. The method further includes transmitting, by the communication device, the text message over the SIP session to a called device.

Abstract: A peripheral interface multiplexing method. The method includes receiving, by using a first pin in a peripheral interface of user equipment, a coded signal sent by an external device, where the coded signal includes a first electrical characteristic value of the first pin; decoding the coded signal to obtain a decoded signal, where the decoded signal includes a control signal that corresponds to the first electrical characteristic value of the first pin, and the control signal is used to control the peripheral interface to transmit a target signal that a user requests to transmit; and controlling, according to the control signal, a pin that is in the peripheral interface and used for signal transmission to transmit the target signal. Therefore, communications interfaces of user equipment can be extended without increasing a quantity of peripheral interfaces, so that the user equipment provides more communications manners, and user experience is improved.

Abstract: Method, apparatus and system for crosstalk suppression of power line communication are provided. The method includes: receiving a joining request message; judging a matching state of the communication terminal based on a history matching record and communication terminal identifier, if matching state of the communication terminal is unmatched: sending a joining response message to the communication terminal; receiving an acknowledgment request message sent by the communication terminal after switch of the communication terminal is turned on; detecting voltage on power line between the communication terminal and an inverter corresponding to the power line communication transmitter, if voltage is within preset voltage range, sending an acknowledgment response message to the communication terminal; storing communication terminal identifier in history matching record and storing matching state of the communication terminal as successfully-matched.

Abstract: Methods, systems, and computer readable medium for initializing communication for multiple transceivers. In one aspect, a method includes launching an initialization process of a first transceiver. The initialization process includes obtaining, for a second transceiver, a set of handshake information and inserting the set of handshake information of the second transceiver into one or more registers that are transmitted with first handshake information of the first transceiver during initialization of the first transceiver. The initialization process includes initiating a communications channel for the second transceiver over the same physical communications medium using the set of handshake information that was inserted into the one or more registers, including transmitting, by the first transceiver, the first handshake information of the first transceiver together with the set of handshake information for the second transceiver over the same physical communications medium using the given set of tones.

Abstract: The present invention extends to methods, systems, and computing system program products for incrementally calculating kurtosis for Big Data or streamed data in real time by incrementally calculating one or more components of kurtosis. Embodiments of the invention include incrementally calculating one or more components of a kurtosis for a modified computation subset based on the one or more components of the kurtosis calculated for a pre-modified computation subset and then calculating the kurtosis based on the incrementally calculated components. Incrementally calculating kurtosis avoids visiting all data elements in the modified computation subset and performing redundant computations thereby increasing calculation efficiency, saving computing resources and reducing computing system's power consumption.

Abstract: An envelope tracking (ET) amplifier circuit is provided. The voltage mDPD circuit is provided in an ET amplifier circuit and configured to determine a voltage deviation relative to an ET modulated target voltage signal, execute an mDPD polynomial in one or more iterations to extract an mDPD coefficient(s), and adjust a time-variant target voltage envelope of the ET modulated target voltage signal based on the mDPD coefficient(s) extracted in each of the mDPD iterations to reduce the voltage deviation to a predefined threshold. By reducing the voltage deviation in the ET modulated voltage, it is possible improve linearity (e.g., gain linearity) of the ET amplifier circuit, which can lead to reduced power consumption and improved radio frequency (RF) performance.

Abstract: Upon detection of a trigger, such as the exceeding of an error threshold or the direction of a user, a diagnostic link system enters a diagnostic information transmission mode. This diagnostic information transmission mode allows for two modems to exchange diagnostic and/or test information that may not otherwise be exchangeable during normal communication. The diagnostic information transmission mode is initiated by transmitting an initiate diagnostic link mode message to a receiving modem accompanied by a cyclic redundancy check (CRC). The receiving modem determines, based on the CRC, if a robust communications channel is present. If a robust communications channel is present, the two modems can initiate exchange of the diagnostic and/or test information. Otherwise, the transmission power of the transmitting modem is increased and the initiate diagnostic link mode message re-transmitted to the receiving modem until the CRC is determined to be correct.

Abstract: The present disclosure discloses a sub-frequency band sharing method, a base station and a user terminal. The method includes: assigning a unique terminal sequence code to a user terminal, and sending the terminal sequence code to the user terminal; receiving a user data packet sent by a core network; parsing the user data packet to acquire a destination user terminal to which the user data packet is to be sent; acquiring a terminal sequence code corresponding to the destination user terminal; acquiring an idle sub-frequency band in a frequency band; and modulating the user data packet and the acquired terminal sequence code to the idle sub-frequency band according to a predetermined sequence to form modulated data, wherein upon completion of the transmission of the modulated data, the sub-frequency band occupied by the modulated data is released.

Abstract: The present patent application relates to a transmission method and corresponding receiving methods. The transmission method comprises: selecting K number of data streams for transmission, wherein each data stream comprises one or more data messages; and independently for each data stream k=0, . . . , K?1: encoding and modulating data messages of the kth data stream using a Trellis Coded Modulation, TCM, scheme TCMk, interleaving the encoded and modulated data messages of the k-th data stream by using a stream specific interleaver ?k, scrambling the interleaved data messages of the k-th data stream by using a stream specific scrambling sequence; combining all scrambled data messages of the K number of data streams into at least one transmission signal s(l); and transmitting the at least one transmission signal s(l) over a radio channel of the wireless communication system.

Abstract: Aspects of frequency error detection with Physical Broadcast CHannel (PBCH) frequency hypothesis are described. For example, a method and apparatus are disclosed for frequency tracking in a user equipment (UE) may include detecting a change in frequency that exceeds a pull-in range of a frequency tracking loop (FTL) of the UE. The method and apparatus may also include identifying a tracking recovery frequency in response to the change in frequency being detected, wherein the tracking recover frequency is identified from a set of frequency hypotheses and based on decoding of the PBCH received by the UE. The method and apparatus may further include updating the FTL with the tracking recovery frequency.

Abstract: A mobile communication device is provided. The mobile communication device includes a housing and an input device operable with the housing. Actuating the input device enables a user to at least one of change and verify an operational status of the mobile communication device. The mobile communication device also includes an indicator coupled in communication with said input device and configured to provide feedback to the user based on the operational status of the mobile communication device.

Abstract: A method for updating firmware of cable modems optimizing management resources in a network comprising a web application, network collector, more than one cable modem, one or more servers. The method includes the web application receiving an update firmware policy, the policy defined by a list of cable modems to have their firmware updated, a Uniform Resource Identifier (URI) pointing to a file within a server in the network, and the web application adding a policy with this information to a policies table. The network collector polls a database engine for a new policy and computing a list of cable modems to have their firmware updated, and the network collector sends a command to a cable modem to update to a new firmware, wherein the new firmware is specified by the URI.

Abstract: Various aspects described herein relate to transmitting hybrid automatic repeat/request (HARQ) feedback. A HARQ communication can be received over a set of one or more links based on a first scheduling grant. One or more interference parameters related to receiving the HARQ communication can be determined as well as one or more predicted interference parameters for a next HARQ communication. HARQ feedback can be transmitted for the HARQ communication including the one or more interference parameters and the one or more predicted interference parameters.

Abstract: A pre-equalization phase tracking unit, for each signal block of received series: computes autocorrelation between portion of identical-as-transmitted initial and terminal sequences and computes phase of autocorrelation; estimates start phase of block processing window using autocorrelation phase and start phase of previous signal block in series; estimates phase drift within window by interpolating using estimated start phases of at least the signal block and next signal block in series; and computes phase compensation signal using estimated phase drift. A post-equalization phase tracking unit subdivides the block into time sequence of groups of equalized symbols.

Abstract: Concepts and examples pertaining to efficient coding switching and modem resource utilization in wireless communication systems are described. A processor of a modem of a user equipment (UE), configured with at least a first-capacity decoder and at least a second-capacity decoder, receives a common virtual carrier (CVC), a dedicated virtual carrier (DVC), or both. The CVC contains common information shared by multiple UEs, control information for the UE, and/or data information related to first data destined for the UE. The DVC contains control information for the UE, the first data, or a combination thereof. The first-capacity decoder decodes data of a small size up to a low data rate. The second-capacity decoder decodes data of a large size up to a high data rate. The processor determines whether to decode the first data using the first-capacity decoder or the second-capacity decoder based on the data information in the CVC.

Abstract: A system for use in a vehicle for determining an indication of the type of terrain in the vicinity of the vehicle, the system comprising; means configured to receive sensor output data from at least one vehicle-mounted sensor (12, 22) which is configured to receive a reflected signal from the terrain; means configured to calculate at least two parameters from the sensor output data; means configured to convert the at least two parameters to a data point for a cluster model comprising a plurality of clusters of pre-determined data points, wherein each cluster corresponds to a different terrain type; and means configured to define to which one of the clusters the data point belongs, so as to determine an indication of the terrain type.

Abstract: A station and non-transitory computer readable storage medium for determining a first physical layer rate to perform data transmissions between the station and an access point of a WiFi network, the first physical layer rate being based on a primary rate and a plurality of fallback rates associated with the access point, the primary rate having a higher transmission speed than the plurality of fallback rates, determining a trigger based upon at least one current condition of the station and at least one corresponding prior condition existing at a time when the first physical layer rate is determined, selecting one of the plurality of fallback rates when the trigger is determined, performing data transmissions between the station and the access point using the one of the plurality of fallback rates and determining a second physical layer rate based on the one of the plurality of fallback rates.

Abstract: Disclosed is a data transmission method in a mobile communication system. The data transmission method through a code sequence in a mobile communication system includes grouping input data streams into a plurality of blocks consisting of at least one bit so as to map each block to a corresponding signature sequence, multiplying a signature sequence stream, to which the plurality of blocks are mapped, by a specific code sequence, and transmitting the signature sequence stream multiplied by the specific code sequence to a receiver.

Abstract: Systems and techniques relating to channel degradation detection for communication systems are described. A described system includes a processor and an interface to transmit signals and receive signals via a channel that includes a cable. The processor can be configured to perform echo cancellation based on echo tap values to remove portions of the transmitted signals that appear as echoes within the received signals, signal equalization based on equalizer tap values, or both. The processor can be configured to determine a channel quality indicator of the channel based on one or more of the echo tap values, one or more of the equalizer tap values, or both. The processor can be configured to generate a warning indication based on the channel quality indicator indicating a degradation of the cable or the channel.

Abstract: An apparatus, system and method for monitoring power to a communication device and switching operation modes. The system is monitored in order to detect a power interruption to the communication device. A first signal is supplied to the communication device to indicate the occurrence of a power interruption and/or activation of a backup power supply. The communication device is then switched to a low power mode which limits one or more operating functions.

Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-generation (4G) communication system such as long term evolution (LTE). A method for receiving a signal in a signal receiving apparatus in a communication system supporting a low density parity check (LDPC) code is provided. The method includes receiving a signal from a signal transmitting apparatus; and performing an LDPC decoding operation which is based on a preset first parity check matrix on the received signal, wherein the first parity check matrix is generated based on a second parity check matrix including a plurality of sub-matrices.

Abstract: A method at a first device for synchronising a first clock of the first device to a second clock of a second device, includes receiving a first message comprising an identifier from the second device; generating a first timestamp in dependence on the time at which the first message is received at the first device according to the first clock; receiving a second message from the second device comprising the identifier and a second timestamp, the second timestamp having been generated in dependence on the time at which the second device transmitted the first message to the first device; and adjusting the first clock in dependence on a time difference between a time indicated by the first timestamp and a time indicated by the second timestamp.

Abstract: Provided are a modem chip for performing hybrid automatic repeat request (HARQ) processing, an application processor including the modem chip, and an operating method of the modem chip. A modem chip for receiving data of a codeword unit including a plurality of codeblock units includes a HARQ controller for controlling HARQ data of the codeword unit to be saved in an external memory based on an error detection result of the codeword unit, a HARQ mover for saving or fetching the HARQ data of the codeword unit in or from the external memory via a bus interface, and a HARQ combiner for combining retransmitted data with the HARQ data fetched from the external memory.

Abstract: Low-complexity asynchronous wireless sensing and communication architecture is disclosed for low power wireless sensors. Schemes are based on asynchronous digital communications and Ultra-Wideband impulse radios. In asynchronous radio, combination of frequency-shift-keying (FSK) and on-off-keying (OOK) to remove clock synchronization is applied. Improved asynchronous non-coherent transmitters and receivers achieve both low power and low complexity while seamlessly combined with asynchronous level-crossing modulation. Both uncoded and coded asynchronous communication may be utilized. Coded asynchronous communication may use error correction. Forward error correction schemes for asynchronous sensor communication are utilized where dominant errors consist of pulse deletions and insertions, and where instantaneous encoding takes place.

Abstract: Various embodiments provide for a new texture address mode that excludes any texture filter taps (i.e. coordinates) that fall outside the texture domain from the filtering process. Taps outside a texture domain are not considered in one embodiment. Also, various embodiments provide flexibility as to the texture coordinate locations ti and values of weights wi. The tap weight can be modified as a function of tap location and in particular whether a tap is within a texture.

Abstract: Methods and devices are provided for estimating crosstalk from a legacy line to a vectored line.

Abstract: Systems and methods of tuning SerDes links between transmitter SerDes channels and receiver SerDes channels are described. Generally, the SerDes links may be tuned using a generic SerDes tuner implementation and a tuning algorithm. The tuning algorithm may have a first tuner interface specific to the transmitter SerDes device and a second tuner interface specific to the receiver SerDes device. The tuning algorithm may define a sequence of operations from the first tuner interface and the second tuner interface that when executed result in calibration of the SerDes link.

Abstract: An electronic device, method of operation thereof, and a recording medium are disclosed. An electronic device includes: a battery; a power management Integrated Circuit (IC) is connected to the battery; a plurality of components receive a power through the power management IC from the battery. A processor is connected to the plurality of components. A memory is electronically connected to the processor and stores instructions controlling the processor to monitor a power amount or an amount of electric current supplied to at least one electronic component among the plurality of the electronic components, and determine whether the power amount or the amount of electric current amount supplied to the at least one monitored electronic component is equal to or exceeds a predetermined value, and reduces a power amount or an amount of electric current of the at least one component or another component related to the at least one component.

Abstract: A power line communication system and method permit auto-commissioning of multiple device control modules on a DC power line during the power up of the system. Device control modules associated with the peripheral devices are powered up sequentially and a unique address is assigned to each device controller when it is powered up. The device control modules have a unique circuit configuration that allows the use of inexpensive and mostly passive components. The cost effectiveness of the device controller design becomes particularly significant in applications, such as multi-panel OLED lighting fixtures, with high node counts.

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 and apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment. The method includes: obtaining a receiving signal after two measurement signals of different spectral ranges pass through different filtering modules and are received at the same time at a receiving end; and determining a part of a filtering characteristic of a receiving end and a part of a joint response according to a nonoverlapped spectral part of the two signals in the spectrum of the receiving signal.

Abstract: Systems and methods may receive data from a data interface of a base platform, convert the data into an analog signal and modulate the analog signal onto a direct current (DC) power line coupled to a connector of the base platform. Additionally, the modulated analog signal may be received from a DC power line coupled to a connector of a tablet platform, wherein the modulated analog signal is converted to a digital signal and demodulated to recover the data. In one example, the data includes user input data associated with an input device including one or more of a mouse, a keyboard, a keypad or a touchpad.

Abstract: A line synchronization method in an overlapped spectrum duplex OSD system having K pairs of communications lines. Each pair of communications lines includes an uplink and a downlink. The method includes synchronizing downstream synchronization symbols of downlinks in all of the pairs of communications lines, and separately synchronizing an upstream synchronization symbol of an uplink of each pair of communications lines with a downstream synchronization symbol of a downlink of each pair of communications lines. The method may be applied to crosstalk channel estimation to distinguish NEXT and FEXT crosstalk channels when upstream and downstream spectrums are overlapped.

Abstract: Various embodiments provide for systems and methods for signal conversion of one modulated signal to another modulated signal using demodulation and then re-modulation. According to some embodiments, a signal receiving system may comprise an I/Q demodulator that demodulates a first modulated signal to an in-phase (“I”) signal and a quadrature (“Q”) signal, an I/Q signal adjustor that adaptively adjusts the Q signal to increase the signal-to-noise ratio (SNR) of a transitory signal that is based on a second modulated signal, and an I/Q modulator that modulates the I signal and the adjusted Q signal to the second modulated signal. To increase the SNR, the Q signal may be adjusted based on a calculated error determined for the transitory signal during demodulation by a demodulator downstream from the I/Q modulator.

Abstract: An apparatus, network system, and method for detecting network phenomena of a power distribution network. A signal injection device adapted to be connected to the power distribution network injects a signal having signal parameters onto the power distribution network. A signal receiving device adapted to be connected to the power distribution network receives the injected signal on the power distribution network. The signal receiving device is adapted to determine the signal parameters of the received signal and is adapted to evaluate the signal parameters of the injected signal with respect to the determined signal parameters of the received signal. An output device connected to the signal receiving device provides an indication of the determined evaluation.

Abstract: A system for providing telematics is provided that includes a communications unit having host circuitry coupled by an interface to at least one removable communications card, the interface includes a break line that enables disconnection of the at least one removable communications card from the host circuitry.

Abstract: Methods and apparatus for performing full-duplex communications using a G.hn protocol are provided. A second node of a plurality of nodes is selected, by a first node with which to engage in full-duplex communications. A first seed common to the plurality of nodes is retrieved. A search is performed for a second seed assigned to the second node. A first portion of a frame is generated for transmission using a half-duplex communications mode, wherein transmissions using the half-duplex communications mode are detectable by each of the nodes. A first group of subcarriers is loaded with the first set of phases generated using the first seed and a second group of subcarriers is loaded with the second set of phases generated using the second seed. The first portion is transmitted, in the half-duplex communications mode, from the first node using the first and second groups of subcarriers.

Abstract: A electronic system includes: a support chip configured to receive an input code stream; a circular Viterbi mechanism, coupled to the support chip, configured to: generate a final path metric for the input code stream, store intermediate path metrics at the repetition depth, generate a repetition path metric for the input code stream, and calculate a soft correlation metric based on the final path metric, the repetition path metric, and the intermediate path metrics.

Abstract: Embodiments of the present invention relate to a power adjustment device and method. A vectoring control entity VCE provided by embodiments of the present invention includes: a downlink FEXT determining module, configured to determine a power value of downlink FEXT caused to a signal on a line corresponding to a port i by a signal on a line corresponding to a port j, and a receive power value of an FTU-R corresponding to the port i; and a downlink receive power adjustment module, configured to: when the port i is activated, determine, according to the two power values determined by the downlink FEXT determining module, a virtual power margin corresponding to the port i and send the virtual power margin to the FTU-R corresponding to the port i.

Abstract: A debugging assembly includes a modem including a control unit, a switch unit, and an RJ45 port. The control unit is coupled to the RJ45 port through the switch unit. The control unit is configured to detect a network connection status of the modem and transmit a control signal to selectively couple the switch unit to pins of the RJ45 port to selectively receive a network signal or a debugging signal.

Abstract: A random signal can be obtained from a random tunnelling of charges from one conductor to another conductor across a quantum tunnelling barrier. The random signal can be amplified and associated to a random number. The association can be performed repetitively to generate a sequence of random numbers.

Abstract: In a numerical control system including a numerical controller and a plurality of I/O units, a serial communication signal monitoring circuit is included inside the I/O unit to monitor a serial communication signal (data and an idle signal). When a state is detected in which a serial communication signal is high or low for a predetermined time or longer, the numerical control system acknowledges the state as disconnection of the serial communication signal, and generates a reset pulse signal to reset an internal register of the I/O unit. With this configuration, when the power supply of the numerical controller is turned off/on, it is unnecessary to turn off/on the power supply of the I/O unit.

Abstract: An antenna device includes a ground conductor; a ground conductor extension that is connected to the ground conductor; and an antenna element that is connected to the ground conductor and that operates in both a first frequency band and a second frequency band higher than the first frequency band, the ground conductor and the ground conductor extension having a length that is ¼ of a wavelength of a frequency included in a middle range between the first frequency band and the second frequency band and that is not a natural number multiple of ¼ of a wavelength of the first frequency band.

Abstract: A playback path may include an input configured to receive an input signal, an output configured to drive a differential output signal, a differential current-mode digital-to-analog converter configured to convert the input signal into the differential output signal, and a control circuit. The differential current-mode digital-to-analog converter may include a plurality of current-mode digital-to-analog elements configured to be selectively enabled and disabled based on the input signal and at least one reference element in a current mirror relationship with the plurality of current-mode digital-to-analog elements such that each individual current through each current-mode digital-to-analog element is a scaled version of a reference current of the at least one reference element. The control circuit may be configured to scale current mirror ratios between the at least one reference element and the plurality of current-mode digital-to-analog elements based on a characteristic of the input signal.

Abstract: The present invention provides a method and an electronic apparatus for automatically detecting bandwidth and the packet type of a packet, so as to solve the problem mentioned above. The method comprises: detecting a plurality of symbols in the preamble of the packet; generating a sign pattern according to the symbols; and determining the bandwidth and the packet type of the packet according to the detected sign pattern. The electronic apparatus comprises: a symbol detecting circuit, a sign pattern generating circuit, and a determining circuit. The symbol detecting circuit is utilized for detecting a plurality of symbols in the preamble of the packet. The sign pattern generating circuit is utilized for generating a sign pattern according to the symbols. The determining circuit is utilized for determining the bandwidth and the packet type of the packet according to the detected sign pattern.