Abstract: A communication device may include a communication interface configured to receive signals and a controller configured to: receive an input signal based on the received signals; perform transform operations on the input signal to generate a spectral periodogram of the input signal; calculate spectral vector powers for each bin of a plurality of bins of the spectral periodogram; determine a median spectral power for a selected range of bins of the plurality of bins; generate a median-scaled spectral density vector based on the median spectral power and a reference spectral density of an expected signal; calculate a detection threshold vector based at least in part on the median-scaled spectral density vector; and identify one or more interference-including bins of the plurality of bins of the spectral periodogram by comparing the spectral vector powers for each bin of the plurality of bins to the detection threshold vector.

Abstract: Embodiments of the present disclosure include an OFDM receiver circuit, which includes an FFT circuit configured to calculate an FFT of a plurality of sample values received by the receiver circuit, and a smoothing circuit configured to identify equalizer coefficients for the sample values by truncating portions of an impulse response of the FFT.

Abstract: Improving a status of a wireless signal includes a display, a wireless transceiver, a processor and memory to monitor a status of a wireless signal of the wireless transceiver and a Basic Input Output System (BIOS) to, in response to the status indicating a degradation of the wireless signal and receiving a command to improve the status of the wireless signal, modify a parameter of an enhanced display port (eDP) signal of the display to reduce interference with the wireless signal generated by the display of the computer.

Abstract: An apparatus and a method are provided in which a processor of a receiving apparatus regenerates time domain samples of an interfering data numerology from frequency domain received signals. The processor performs FFT, with a size corresponding to a desired data numerology, on the regenerated time domain samples to generate an interfering numerology cancellation signal. The processor subtracts the interfering numerology cancellation signal from a frequency domain received signal of the desired data numerology.

Abstract: A method of frame synchronization comprises receiving a stream of bits, the stream comprising a sequence of frames, wherein each frame comprises a frame counter value representing the number of the frame in the sequence, and frame check bits for checking the validity of the frame counter value. The method comprises decoding a first section of bits, and trailing a first portion of the first section of bits as a trial counter value, and a second portion of the first section of bits as trial check bits. The method comprises checking if the trial counter value corresponds to a valid frame counter value using the trial check bits, and synchronizing based on whether the trial counter value is determined to correspond to a valid frame counter value.

Abstract: A system and method for receiving a quadrature amplitude modulation symbol. In some embodiments, the symbol has a plurality of bits and is associated with a point in a constellation of quadrature amplitude modulation points, each point of the constellation having associated with it a binary word. The method includes receiving a first analog signal carrying a modulation; performing initial estimation, to generate a first initial modulation estimate, for a portion of the first analog signal carrying a modulation; identifying, based on the first initial modulation estimate, a row of an initial candidate lookup table, the row corresponding to a region of the constellation; and reading from the row of the initial candidate lookup table a first plurality of initial candidate points of the constellation.

Abstract: A vehicle power supply control method includes switching, when a constant voltage is required of a power supply circuit in generating electric power by a power generator, the power supply circuit being connected to a primary storage battery and configured to be connected to a secondary storage battery that has a lower internal resistance than that of the primary storage battery, between connection of the secondary storage battery to the power supply circuit and disconnection of the secondary storage battery from the power supply circuit depending on the required constant voltage, current output to the power supply circuit by the power generator, and a state of charge of the secondary storage battery.

Abstract: Embodiments of the present invention include a system, method and computer program product for mitigating interference in data received by a multiple antenna array. Processor(s) executing program code identify signals from users, including active users, and by identifying these signals, mitigate interference and jamming in the received data, overall.

Abstract: A jitter determination method for determining at least one jitter component of a data signal is disclosed.

Abstract: A method of operation for an Ethernet transceiver is disclosed. The method includes entering a fast retrain sequence of steps. The fast retrain sequence of steps includes transferring two-level symbols to a link partner; and directly following transferring of the two-level symbols, transferring multi-level symbols to the link partner, the multi-level symbols having greater than two symbol levels.

Abstract: A data transmission method, a wireless network device, and a communications system are provided. The method includes: sending, by a first wireless network device, at least two channels for common information on a same carrier, where the at least two channels for common information include a first channel for common information and a second channel for common information, the first channel for common information and the second channel for common information are on different subbands of the same carrier, and the common information includes at least one of a synchronization signal, a broadcast signal, or a system message.

Abstract: A system, method, and electronic device for compensating in-phase (I) and quadrature (Q) mismatch (IQMM) are herein disclosed. The system includes an IQ mismatch compensator (IQMC) configured to compensate for IQMM between a time-domain I signal and a time-domain Q signal using filter weight coefficients, and output a compensated I signal and a compensated Q signal, a fast Fourier transformation (FFT) circuit configured to perform an FFT on the compensated I signal and the compensated Q signal to a frequency-domain compensated signal, and a coefficient updater configured to update the filter weight coefficients based on a frequency-domain observation of the frequency-domain compensated signal.

Abstract: Techniques are provided for positioning of a mobile device in a wireless network using directional positioning reference signals (PRS), also referred to as PRS beamforming. In an example method, a plurality of directional PRSs are generated for at least one cell for a base station, such that each of the plurality of directional PRSs comprises at least one signal characteristic and a direction of transmission, either or both of which may be distinct or unique. The plurality of directional PRSs is transmitted within the at least one cell, such that each of the plurality of directional PRSs is transmitted in the direction of transmission. A mobile device may acquire and measure at least one of the directional PRSs which may be identified using the associated signal characteristic. The measurement may be used to assist position methods such as OTDOA and ECID and to mitigate multipath.

Abstract: Methods, systems, and devices for wireless communications are described. A device, which may be otherwise known as user equipment (UE), may support spurious emission attenuation. A device may determine, based on a first frequency scan on a radio frequency (RF) spectrum band, that a signal strength of a signal at a frequency of the RF spectrum band satisfies a threshold. The device may perform, based on the first frequency scan on the RF spectrum band, a second frequency scan on the RF spectrum band to determine whether the signal strength of the signal at the frequency of the RF spectrum band satisfies the threshold during the second frequency scan. Subsequently, the device may determine that the signal is a spurious emission at the frequency based on the signal strength of the signal, and configure a notch filter for mitigating the spurious emission at the frequency.

Abstract: A base station may determine a Doppler metric associated with a wireless channel and a user equipment (UE). The Doppler metric may be determined from received information related to Doppler effects measured by the UE or from directly measured Doppler effects associated with uplink data received from the UE. Based on the determined Doppler metric, the base station may select one or both of a reference signal (RS) density and a channel estimation technique for the wireless channel and associated UE. The base station may transmit an indication of the RS density to the UE. Downlink data bursts and uplink data bursts may include RSs and data according to the indicated RS density. Further, the base station may transmit to the UE, an indication to communicate using the selected wireless channel estimation technique.

Abstract: An apparatus includes an interface and a training circuit. The interface may be configured to transmit signals to/from a plurality of I/O channels. The training circuit may be configured to generate a training voltage on a current one of the I/O channels, read an output of an eye monitor slicer to determine voltage transition values corresponding to the training voltage at a plurality of sampling times, map the voltage transition values to coefficients for the current I/O channel and determine the coefficients for each of the I/O channels. The training circuit may comprise the eye monitor slicer. The voltage transition values may correspond to an interference response for one of the I/O channels. The coefficients may be applied as feedback to cancel the interference.

Abstract: The present disclosure provides for distortion cancelled by receiving a collided signal comprising first and second signals carrying respective first and second packets; digitizing the collided signal into a first digital signal and decoding the first packet therefrom; calculating a digital linear interference component of the first packet on the second from an estimated signal re-encoding the decoded first packet; synthesizing an analog linear interference component from the digital linear interference component; determining a digital nonlinear interference component of the first packet on the second from the first digital signal; amplifying the collided signal to produce a second amplified signal; removing the analog linear interference component from the second amplified signal to produce a partially de-interfered signal; removing the digital nonlinear interference component from the partially de-interfered signal to produce a de-interfered signal; and decoding the second packet from the de-interfered sign

Abstract: Methods and systems are provided for a charge withholding converter reshuffling technique that decorrelates input power of a multi-phase switched capacitor (SC) voltage converter relative to the output power provided to a load. The load may be a cryptographic device. The technique provides a countermeasure against power analysis attacks. A controller including a first random number generator coupled to the stages of the SC voltage converter controls gating for charging a first subset of the stages. A controller including a second random number generator coupled the stages of the SC voltage converter controls gating for discharging a second subset the stages. A number of the switched capacitor stages maintain their charge beyond the switch period in which they are charged. The SC voltage converter withholds a random portion of input charge and delivers this charge to the load after a random time period.

Abstract: A system that incorporates aspects of the subject disclosure may perform operations including, for example, obtaining performance measurements, identifying a performance measurement from the performance measurements that is below performance threshold and, in turn, initiating corrective action to improve the performance measurement of an affected network element falling below the performance threshold. The performance measurements can be determined from measurements associated with signals generated by communication devices, noise levels in a spectral portion used by communication devices to transmit the signals, and interference signals exceeding an adaptive inter-cell interference threshold. Other embodiments are disclosed.

Abstract: An iterative two dimension equalizer usable in a receiver of orthogonal time frequency space (OTFS) modulated signals is described. In one configuration of the equalizer, a forward path generates, from received time-frequency domain samples and a channel estimate, estimates of data bits and likelihood numbers associated with the estimates of data bits, generated by delay-Doppler domain processing. In the feedback direction, the estimates of data bits are used to generate symbol estimates and autocorrelation matrix estimate in the time domain. In another configuration, a soft symbol mapper is used in the feedback direction for directly generating the feedback input symbol estimate without having to generate estimates of data bits.

Abstract: In accordance with an embodiment of the present invention, a method for receiving a signal, comprising the estimation step for estimating time and frequency shifts that are embedded in the received signal, to cancel-out shifts, wherein the method refers to the non-commutative shift parameter space of co-dimension 2.

Abstract: A data transmission method, a wireless network device, and a communications system are provided. The method includes: sending, by a first wireless network device, at least two channels for common information on a same carrier, where the at least two channels for common information include a first channel for common information and a second channel for common information, the first channel for common information and the second channel for common information are on different subbands of the same carrier, and the common information includes at least one of a synchronization signal, a broadcast signal, or a system message.

Abstract: The present disclosure provides a radar apparatus and a method of correcting an error of the radar apparatus. According to the present disclosure a first transmitting antenna group and a first receiving antenna group are constituted by elongating some of a plurality of transmitting antennas and a plurality of receiving antennas in a first direction of vertical directions, a second transmitting antenna group and a second receiving antenna group are constituted by elongating the other antennas in a second direction opposite to the first direction, and one or more of transmitting antennas that transmit transmission signals and one or more of receiving antennas that receive reflection signals are included in different groups, thereby being able to measure elevation information of an object and correct a mounting position of the radar apparatus on the basis of the information.

Abstract: Embodiments of a device and method to automatically acquire signal quality metrics in a digital communication system are disclosed. The device may include acquisition means to sample the likelihood of a digital communication signal passing through a grid of time and amplitude regions, and storage means by which such likelihood measurements may be accumulated in a computer memory array for analysis. A state machine may execute a method that controls both the acquisition means and the storage means, requiring minimal intervention from supervisory systems.

Abstract: A computer game interface is disclosed, having controller inputs configured to receive an input signal from a user interface controller and to enable the user to control a user controllable element of a game on a computer. The computer game interface also has a controller output that sends an output signal to the computer, the output signal having information to control the user controllable element of the game. Another element of the computer game interface is a switching module in communication with the controller inputs and the controller output. The switching module selects an input signal from the input signals received by the controller inputs and communicates the input signal to the controller output. An additional element of the computer game interface is a timer controlling the switching module to switch the input signal communicated to the controller output based on a time period.

Abstract: Apparatuses and methods for simultaneously operating as a wireless radio and monitoring the local frequency spectrum. For example, described herein are wireless radio devices that use a secondary receiver to monitor frequencies within the operating band and prevent or avoid interferers, including in particular half-IF interferers. The systems, devices, and methods described herein may adjust the intermediate frequency in a superheterodyne receiver to select an intermediate frequency that minimizes interference. In particular, described herein are apparatuses and methods that use a second receiver which is independent of the first receiver and may be connected to the same receiving antenna to monitor the geographically local frequency spectrum and may detect spurious interferers, allowing the primary receiver to adjust the intermediate frequency and avoid spurious interferes.

Abstract: An electronic device is described which has a sensor panel comprising a plurality of receive electrodes configured to measure signals received from one or more transmit electrodes; and a sensor panel control module. The module is configured to receive signals from the plurality of receive electrodes; and for an individual one of the received signals, compute a difference between the received signal and an expected signal which is expected to be received in the absence of impulse noise. The module clips or blanks the received signals according to a threshold applied to the computed difference.

Abstract: A transmitting apparatus includes a first signal generating unit that generates, on the basis of data a first signal transmitted by single carrier block transmission; a second signal generating unit that generates, on the basis of an RS, a second signal transmitted by orthogonal frequency division multiplex transmission; a switching operator that selects and outputs the second signal in a first transmission period and selects and outputs the first signal in a second transmission period; an antenna that transmits the signal output from the switching operator; and a control-signal generating unit that controls the second signal generating unit such that, in the first transmission period, the RS is arranged in a frequency band allocated for transmission of the RS from the transmitting apparatus among frequency bands usable in OFDM.

Abstract: A novel and useful apparatus and method for an image-interferer aware single quadrature RF downconversion (SQRD) low intermediate frequency (LIF) receiver and related power reduction techniques utilized therein. The invention applies zero-margin adaptive transceiver (ZMAT) design principles to considerably reduce the receiver's power consumption in an adaptive fashion in accordance with the instantaneous reception conditions. In a low IF dual-branch (i.e. quadrature) downconversion receiver, the radio monitors the image strength and shuts off the receiver's Q branch (or I branch) when image rejection is not needed (i.e. when the relative image strength is below a threshold), thus significantly reducing power consumption in the RF receiver. A zero IF receiver is switched to a SQRD low IF receiver of lower power consumption when the image interferer strength is low enough to allow for a given required level of performance.

Abstract: Synchronization of plural outputs of data transported by a wireless network is facilitated by bandlimiting a sample clock signal controlling a rate at which data is processed by the network's devices and/or bandlimiting wall time data controlling the real time for presenting a datum.

Abstract: Disclosed are a method, a device, and a system for the acquisition of control node information. In embodiments of the present invention, on the basis of information transmitted by a base station, a relay node acquires control node information on user terminal access attached in the information acquired, thereby allowing a relay node in a system placed after the introducing relay node to be informed of the control node information on user terminal access.

Abstract: The present disclosure includes systems and techniques relating to an integer non-uniform constellation (NUC) high-order M-QAM. In some implementations, M is no less than 1024. Each of M constellation points of the integer NUC M-QAM has respective integer real and imaginary coordinates. A bit pattern is received and mapped to integer real and imaginary coordinates of one of the M constellation points according to a mapping rule of the integer NUC M-QAM. A transmission signal is modulated in accordance with the integer real and imaginary coordinates of the one of the M constellation points of the integer NUC M-QAM.

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 and an apparatus for channel estimation in a wireless communication system are provided. According to various embodiments of the present disclosure, an method of a receiving apparatus in a wireless communication system includes: estimating channel tap values by using a first reference signal; and estimating an effective channel regarding a second reference signal, based on channel tap indexes corresponding to values greater than or equal to a threshold from among the channel tap values. According to various embodiments of the present disclosure, the receiving apparatus can more exactly estimate an effective channel, and can achieve a lower BLER even in a high SNR region.

Abstract: A method and an apparatus of cooperating with a plurality of base stations in a wireless communication system. A cloud cell is configured with a plurality of base stations that cooperate with each other for a mobile station and synchronizes user contexts for serving the mobile station among the plurality of base stations included in the cloud cell, and the plurality of base stations cooperate with each other to provide a communication service to the mobile station. The present disclosure reduces generation of a handover when the mobile station moves between base stations, and increases the data yield of the mobile station by transmitting and receiving data in cooperation with base stations in a cloud cell at a shaded area or a cell border.

Abstract: The present invention discloses a signal processing device, an air pressure sensor assembly and an electronics apparatus. The signal processing device for a sensing signal comprises: an input unit, which is configured to receive the sensing signal; and a processing unit, which is configured to attenuate a higher frequency component of the sensing signal so that the value of the higher frequency component when the sensing signal is stable is lower than that when the sensing signal is changing. According to an embodiment of this invention, the present invention can reduce the noise in a sensing signal from an air pressure sensor during a stable state.

Abstract: Systems and methods for improving wireless access point communications are provided. Some embodiments contemplate filtering operations such that two or more radios can be used in the 5 GHz or 2.4 GHz band without interfering with each other. Some embodiments employ discrete Low Noise Amplifiers (LNA) and Power Amplifiers (PA) as well as frontend modules. In some examples, filtering may be primarily used on the receiving side to filter out other signals in 5 GHz before they are amplified by an external LNA or LNAs, e.g., as integrated in a WLAN chipset. Filtering may also be performed on the transmit side in some embodiments.

Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

Abstract: Wireless communication under IEEE 802.11 standards utilizing carrier specific interference mitigation where an AP or UE employs an ultra-wideband tuner to evaluate available spectrum between several communication bands. Rather than being constrained to communicate in a single communication band, the AP and UEs may utilize more than one communication band to communicate with one another. In doing so, the AP and UE search across several bands and measure interference on a carrier-by-carrier basis across those bands. Either of the AP and UE may select a cluster of carriers for communication, where the cluster of carriers may comprise 1) contiguous carriers in a single sub-channel, 2) contiguous carriers spanning across more than one sub-channel, 3) discontinuous carriers in a single sub-channel, or 4) discontinuous carriers spanning across more than one sub-channel. The mapping between a cluster and its carriers can be fixed or reconfigurable.

Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

Abstract: The present invention discloses a wireless communication device including: a transmission circuit generating a digital modulation signal according to transmission data, and analogizing the digital modulation signal to generate and transmit a transmission signal in a first mode; a reception circuit receiving a reception signal including an interference component caused by the transmission circuit; a self-interference cancellation circuit being enabled in the first mode and disabled in a second mode, providing an analog self-interference cancellation signal for the wireless reception circuit according to the transmission signal to cancel a part of the interference component, and providing a digital self-interference cancellation signal for the reception circuit according to the digital modulation signal to cancel another part of the interference component; and a control circuit having the wireless communication device operate in one of the first mode and the second mode according to at least one of indices and

Abstract: An electronic device includes: a wireless communication module configured to perform wireless communication in a first state; a fingerprint sensor configured to sense a fingerprint in a second state; and at least one processor electrically connected to the wireless communication module and the fingerprint sensor, wherein the processor changes the first state or the second state based on at least part of an operating state of the wireless communication module or the fingerprint sensor.

Abstract: An interference cancellation method and device are disclosed. In a process of performing cell reestablishment or cell handover, for any interference cancellation parameter previously received from a network-side device, a user terminal can continue to apply the interference cancellation parameter to perform an interference cancellation operation according to a specified first interference cancellation parameter application rule or first instruction information delivered by the network-side device, or release or no longer apply the interference cancellation parameter. In this way, a currently existing problem that a user terminal cannot know how to process a previously received interference cancellation parameter in a process of performing cell reestablishment or cell handover can be resolved, and further, an objective of improving an interference cancellation effect can be achieved.

Abstract: A test generator that determines an amplification level of an amplifier within a DFE and a method for determining the amplification level are disclosed. The test generator includes a signal generator that generates a test pattern signal characterized by a repeating digital test pattern and an offset voltage and an input signal port adapted to receive a digital DFE output signal from the DFE, the digital DFE output signal depending on the amplification level. The test generator includes an output control port that communicates a digital command word specifying a gain to be used by the amplifier in the DFE and a threshold for determining if a signal in the DFE is a logical one or logical zero. A controller determines the amplification level by measuring a BER between the test pattern and the digital DFE output signal as a function of the threshold and the offset voltage.

Abstract: An optical receiver apparatus includes a photo detector that detects amplitude modified optical signals transmitted through an optical transmission channel and mapped to constellation points and converts the optical signal into electrical signals, a sampling circuit that samples the electrical signals and generates digital signals, and a signal processing circuit that has a two-step equalization algorithm converging actual constellation points into desired constellation points. The two-step equalization algorithm includes a first equalization algorithm that uses multiple modulus in performing an error signal calculation, and a second equalization algorithm that includes a filtering procedure that compares actual constellation points with desired constellation points and an adjustment procedure that iteratively adjusts parameters of the filtering procedure in accordance with the comparison result.

Abstract: An apparatus and a method are provided in which a processor of a receiving apparatus regenerates time domain samples of an interfering data numerology from frequency domain received signals. The processor performs pre-fast Fourier transform (FFT) processing of a desired data numerology on the regenerated time domain samples of the interfering data numerology. The processor performs FFT, with a size corresponding to the desired data numerology, on the regenerated time domain samples after performing pre-FFT processing to generate an interfering numerology cancelation signal. The processor subtracts the interfering numerology cancelation signal from a frequency domain received signal of the desired data numerology to reduce an effect of interference of the interfering data numerology on the desired data numerology.

Abstract: An optimization system for use in a digital repeater system comprises at least one input port for receiving a carrier signal associated with a communication channel of a telecommunication network, at least one meter unit for obtaining an estimate of the error vector magnitude for the carrier signal, and at least one crest factor reduction unit for dynamically reducing, based on the estimate of the error vector magnitude, the crest factor of the carrier signal.

Abstract: Systems and methods are provided for receiver nonlinearity estimation and cancellation. Narrowband (NB) estimation may be performed in a receiver during handling of received radio frequency (RF) signals. The narrowband (NB) may include generating estimation channelization information relating to received RF signals; generating reference nonlinearity information relating to one or more other signals, which may cause or contribute to nonlinearity that affects the processing of the received RF signals; and generating, based on the estimation channelization information relating to the received RF signals and the reference nonlinearity information relating to the other signals, control data for configuring nonlinearity cancellation functions. The received RF signals may be channelized, and the estimation channelization information may be generated based on the channelization of the received RF signals.

Abstract: The invention proposes a method comprising the evaluation of a function F obtained by applying to n sub-functions fi a first operation, the evaluation comprising: the application of a series of calculation steps in which a first unit assumes a role of a client and a second unit assumes a role of a server, and the repetition of the series of calculation steps in which the roles of client and of server are exchanged between the units, each series of steps comprising: a) randomly generating, by the server, first data, and a second datum, b) for each sub-function fi, generating by the server a set of elements formed by: a result of fi evaluated in the data of the client and of the server, masked by a first datum, by applying the first operation between the result and the first datum, and masked by the second datum, by applying between the masked result and the second datum of a second operation different from the first and distributed relatively to the latter, c) recovering by oblivious transfer, by the

Abstract: It is provided a method for reducing interference. The method is performed in a receiver and comprises the steps of: receiving a first signal forming part of a symbol; extracting a differential signal by comparing the first signal with a second signal, wherein the first signal and the second signal are based on the same information; estimating a base frequency of the differential signal for the symbol; mapping the base frequency to a first time of the symbol; estimating frequencies at other times of the symbol using interpolation and/or extrapolation using base frequencies from at least one adjacent symbol; reconstructing an interfering signal based on the estimated frequencies; and subtracting the reconstructed interfering signal from a received signal for the symbol.

Abstract: A method of processing raw response signals for capacitive sense arrays is performed at an electronic device having one or more processors and a capacitive sense array. The process receives a raw response signal from the capacitive sense array. The process computes an offset signal that represents an average baseline value of the raw response signal over a period of time and filters the raw response signal to a limited frequency band, thereby forming a bandwidth limited signal. The process also computes a differential signal as the difference between the offset signal and the bandwidth limited signal and uses the differential signal to detect an object proximate to the capacitive sense array.