Abstract: A digital-to-analog converter (DAC) includes a plurality of DAC cells, a mismatch error sorting circuit, and a dynamic element matching (DEM) circuit. The mismatch error sorting circuit generates a sorting result of the plurality of DAC cells according to mismatch error levels of the plurality of DAC cells. The DEM circuit shapes the mismatch error levels of the plurality of DAC cells according to the sorting result of the plurality of DAC cells.

Abstract: Methods, systems, computer-readable media, and apparatuses for spurious information reduction in a data signal are presented. Some configurations include mixing a plurality of analog input signals with different corresponding local oscillator signals to generate a corresponding plurality of converted signals; generating, from each of the plurality of converted signals, a corresponding one of a plurality of sampled signals; frequency shifting at least one signal that is based on at least one of the plurality of sampled signals to obtain, from at least the plurality of sampled signals, a plurality of frequency-aligned signals; and performing a common-mode filtering operation, based on information from the plurality of frequency-aligned signals, to produce a digital output signal.

Abstract: A range profile digitization circuit for converting a repeating analog input signal into a time series of digital amplitude values, the converter comprising: a signal quantizer arranged to receive the analog input signal and a threshold input and arranged to output a binary value quantized output signal based on a comparison of the input signal with the threshold signal; a plurality of samplers each arranged to sample and hold its input signal upon receipt of a trigger signal; and for each sampler: a plurality of decoders and a demultiplexer arranged to receive an output from the sampler and pass it to a selected one of said decoders based on a selector input. With a plurality of decoders associated with each of the samplers, each sampler can be re-used during the building up of the range profile.

Abstract: A method and circuit for recovering data from a digital bitstream received from an analog to digital converter includes asynchronously oversampling the digital bitstream at a sampling rate dictated by an estimate of a clock rate of the analog to digital converter and a nominal oversampling factor. The method and circuit also includes calculating widths of bits of the digital bitstream, and calculating a learned oversampling factor using the calculated widths of a predetermined number of bits of the digital bitstream and a minimization function. The method and circuit also includes calculating data bits to be inserted to a digital filter for digestion using the calculated widths of the bits of the digital bitstream and the learned oversampling factor.

Abstract: An AD converter includes: an amplifier including first and second input ends; a capacitor connecting the first input end and an output end of the amplifier; a comparator including a first input end connected to the output end and a second input end; a first switch connected between an application end of the input voltage and the first input end; a second switch connected between a first node and application end of ground potential; and a controller performing ON/OFF control of the first and second switches, wherein the controller starts charging the capacitor by switching the first switch to ON state, thereafter discharge the capacitor by setting the second switch to ON state during offset regulation period to cancel increase in a charging amount of the capacitor, and measure discharging period from an end of the offset regulation period to switching of an output level of the comparator.

Abstract: Provided is a successive approximation AD converter circuit that converts an analog input signal into a digital output signal. The successive approximation AD converter circuit includes a capacitor DAC including a capacitor array and a switch array connected to the capacitor array, a comparator connected to first comparison wiring and second comparison wiring, and a control circuit that determines a value of the digital output signal while controlling a state of the switch array. The capacitor array includes a first local array provided between the first comparison wiring and the switch array and a second local array provided between target wiring and the switch array. The capacitor DAC is provided with a scaling capacitor between the target wiring and the first comparison wiring and is provided with a potential fixing switch between the target wiring and the wiring to which the analog input signal is applied.

Abstract: An apparatus includes a delta-sigma modulator digital-to-analog converter section having a multiple stag cascaded error cancellation architecture, each stage including a delta-sigma modulator followed by a digital-to-analog converter, the delta-sigma modulator digital-to-analog converter section configured to receive a digital input and to generate an analog output. An inverting amplifier-based analog filter is coupled to receive the analog output, the inverting amplifier-based analog filter configured to filter the analog output to produce a filtered analog output.

Abstract: An encoding technique for reducing the power of PDM microphones is disclosed. Digital MEMS microphones utilize a modulation technique called Pulse Density Modulation (PDM), where a single data line (PDMDAT) is used to convey the digital information from the microphone source to a receiver. A characteristic of PDM is that a low noise signal will produce the most transitions, a zero signal will produce an alternating bitstream of logic-1s and logic-0s, and low noise bitstreams will be rich in singleton and doubleton 1s/0s. Typically, CMOS drivers transmit the PDM bitstream signal. CMOS drivers consume power primarily when they transition, so a bitstream rich in singletons and doubletons will increase power consumption. Differential encoding with an XNOR function is used as a singleton-suppression encoder, and a differential encoding with an XOR function is used as a doubleton-suppression encoder.

Abstract: A data coding processing method and apparatus, a storage medium, and an electronic device are provided. The method includes: acquiring discontinuous data from a plurality of data blocks used for Forward Error Correction (FEC) coding to form a plurality of target data blocks; determining parity information of FEC code words respectively according to the plurality of target data blocks, so as to obtain a plurality of pieces of parity information; and forming coded data by the plurality of pieces of parity information and the plurality of data blocks used for FEC coding.

Abstract: A system and method for detecting the preamble of a wireless packet is disclosed. The system utilizes one or more received fragments as inputs to a correlator, forming correlator content inside the correlator memory. After every sample from the received fragment is provided to the correlator, the correlator then compares the correlator content to a known pattern pre-programmed as a set of correlation coefficients. The correlation coefficients may not align with the correlator content because the symbol boundaries are not known a-priori. By cyclic rotation of the correlation coefficients relative to the correlator content, or cyclic rotation of the correlator content relative to the known correlation coefficients, a match with one or more preamble symbols may be found. This technique may be used to reduce power during the preamble detection process. Alternatively, this technique can also be used for antenna diversity, multi PHY and multichannel applications.

Abstract: According to an example embodiment, a radio transmitter includes at least one processor and at least one memory including computer program code. The at least one memory and the computer program code may be configured to, with the at least one processor, cause the radio transmitter to: obtain a plurality of bits to be transmitted; obtain a partitioning parameter indicating how to partition the plurality of bits between Gray labelling and set-partitioning labelling; modulate the plurality of bits into a plurality of symbols by applying Gray labelling to a first part of the plurality of bits according to the partitioning parameter and applying set-partitioning labelling to a second part of the plurality of bits according to the partitioning parameter; and provide the plurality of symbols for transmitting. A radio transmitter, a receiver, methods, and a computer program product are disclosed.

Abstract: Disclosed herein are systems and method for training neural network based decoders for decoding error correction codes, comprising obtaining a plurality of training samples comprising one or more codewords encoded using an error correction code and transmitted over a transmission channel where the training samples are subject to gradual interference over a plurality of time steps and associate the encoded codeword(s) with an interference level and a parity check syndrome at each of the plurality of time steps, using the training samples to train a neural network based decoder to decode codewords encoded using an error correction code by (1) estimating a multiplicative interference included in the encoded codeword(s) based on reverse diffusion applied to the encoded codeword(s) across the time steps, (2) computing an additive interference included in the encoded codewords based on the multiplicative interference, and (3) recovering the codeword(s) by removing the additive interference.

Abstract: According to certain embodiments, a method by a transmitter is provided for adaptively generating precoder bits for a Polar code. The method includes acquiring at least one configuration parameter upon which a total number of precoder bits depends. The at least one configuration parameter comprising at least one of an information block length K, a code block length N, and/or a code rate R=K/N. The total number of precoder bits is determined, and the precoder bits for a code block are generated according to the determined total number of precoder bits. The precoder bits are placed within the code block.

Abstract: The present disclosure discloses a method for Huffman correction and encoding, a system and relevant components, wherein the method includes: obtaining a target data block in a target file; constructing a Huffman tree by using the target data block; determining whether a depth of the Huffman tree exceeds a preset value; and when the depth of the Huffman tree does not exceed the preset value, by using the Huffman tree, generating a first code table and encoding the target data block; or when the depth of the Huffman tree exceeds the preset value, by using a standby code table, encoding the target data block; wherein the standby code table is a code table of an encoded data block in the target file.

Abstract: An analog error correction circuit is disclosed that implements an analog error correction code. The analog circuit includes a crossbar array of memristors or other non-volatile tunable resistive memory devices. The crossbar array includes a first crossbar array portion programmed with values of a target computation matrix and a second crossbar array portion programmed with values of an encoder matrix for correcting computation errors in the matrix multiplication of an input vector with the computation matrix. The first and second crossbar array portions share the same row lines and are connected to a third crossbar array portion that is programmed with values of a decoder matrix, thereby enabling single-cycle error detection. A computation error is detected based on output of the decoder matrix circuitry and a location of the error is determined via an inverse matrix multiplication operation whereby the decoder matrix output is fed back to the decoder matrix.

Abstract: Techniques to dynamically adjust the corner frequency of a high-pass filter in response to a time-domain amplitude value of an output signal, thereby preserving accuracy while promptly recovering the signal's baseline value. A system can be configured to filter frequency-domain values of an input signal based on a filtering characteristic. The filtering characteristic can be set dynamically in response to a time-domain value of an amplitude of an output signal. The filtering characteristic can comprise a corner frequency, and the system can include a high-pass filter configured to filter out frequency components at frequencies lower than the corner frequency. The system is configured to dynamically change the corner frequency from a first value to a second value, in response to the time-domain value of the amplitude crossing a threshold value. The system may dynamically change the corner frequency within a time interval after the crossing.

Abstract: Embodiments presented herein provide apparatus and techniques to reduce a direct current (DC) voltage offset between a transmitter and receiver. Embodiments include a shared reference voltage signal generated by a reference voltage source. The receiver may include a first unit gain buffer to receive a reference voltage signal from the reference voltage source. The transmitter may be communicatively coupled to the receiver via one or more connections and may include a second unit gain buffer communicatively coupled to the first unit gain buffer via one of the connections. An amplifier (e.g., an operation amplifier) of the transmitter may include multiple positive inputs coupled to the second unit gain buffer and an offset tracker. The offset tracker may compensate for a DC offset caused by at least a power supply and/or a ground bounce.

Abstract: A master node (MN) communicating with a UE using resource of a first band of unlicensed spectrum sends an addition request to a selected secondary node, to request resources for supporting the UE in a second band of unlicensed spectrum. The addition request includes minimum frequency separation information and optionally a baseline reference frequency. The minimum frequency separation information communicated in the addition request, indicates a minimum amount of frequency separation to be maintained between the communication resources in the first band of unlicensed spectrum used for communications with the UE and communication resource in the second band of unlicensed spectrum to be used for communications with the UE. The secondary node selects a channel within the second band of unlicensed spectrum to use for communications with the UE, which will satisfy the minimum frequency separation requirement communicated in the addition request and avoid IDC problems for the UE.

Abstract: A device for reducing noise in a radio signal received in the FM band is proposed, including: a module for demodulating the radio signal, adapted to generate a demodulated radio signal on the basis of the received radio signal; a noise suppression module adapted to replace a temporal sequence of the demodulated radio signal with a denoised sequence; a module for controlling the noise suppression module, adapted to control the activation of the noise suppression module. The noise reduction device further including a module for analyzing the frequency spectrum of the received radio signal. The control module is configured to control the noise suppression module according to an activation strategy chosen from among several predetermined activation strategies depending on the spectral content of the received radio signal.

Abstract: A beacon receiver including: a Digital Fourier Transform (DFT) module including bins to acquire and to track a beacon signal; an acquisition processor to find acquisition frequency estimates of the beacon signal, to improve the acquisition frequency estimates with a generalized complex interpolator and to linearize the acquisition frequency estimates; and a tracking filter to track the acquired beacon signal and to calculate a tracking frequency estimates; and a synchronization manager to apply a frequency correction, to an oscillator, based on the acquisition frequency estimates or the tracking frequency estimates, wherein the DFT module uses a first bin size for the bins to acquire, a second bin size for the bins to track, and the first bin size is greater than the second bin size.

Abstract: In an embodiment, a receiver included in a communications system is configured to receive a radio frequency (RF) signal from a phased array antenna, the RF signal comprising at least a portion of a plurality of data beams included in a single channel, generate a plurality of channel signals based on the RF signal. Generating the plurality of channel signals includes separating the RF signal into a plurality of channels in which each channel of the plurality of channels includes at least a portion of a respective subset of the plurality of data beams. The receiver is further configured to decode each data beam of the plurality of channel signals with a respective phase and a respective time delay. The receiver is further configured to output the plurality of data beams of the plurality of channels.

Abstract: A signal receiving method, comprising: receiving a first communication signal and/or a second communication signal through an antenna; when the antenna receives the first communication signal and the second communication signal simultaneously, transmitting, by a first receiving circuit, the first communication signal to a first amplifying circuit, and receiving the second communication signal by a second receiving circuit; and When the antenna does not receive the first communication signal and the second communication signal simultaneously, transmitting, by the first receiving circuit, the first communication signal to the first amplifying circuit, and transmitting, by the first receiving circuit, the second communication signal to a second amplifying circuit. The first communication signal and the second communication signal correspond to different communication protocols respectively.

Abstract: Methods and devices addressing design of wideband LNAs with gain modes are disclosed. The disclosed teachings can be used to reconfigure RF receiver front-end to operate in various applications imposing stringent and conflicting requirements. Wideband and narrowband input and output matching with gain modes using a combination of the same hardware and a switching network are also disclosed. The described methods and devices also address carrier aggregation requirements and provide solutions that can be used both in single-mode and split-mode operations.

Abstract: The disclosure relates to a communications system having a transmitter and receiver connected via a transmission line. An example communications receiver (202) comprises: a pair of input connections (211, 212) for connecting to a transmission line (203); a termination resistance (213) equal to a characteristic impedance (Zc) of the transmission line (203); an air core transformer (205) having an input coil (206) connected to the pair of input connections (211, 212) via the termination resistance (213); and a comparator circuit (208) connected to an output coil (207) of the air core transformer (205), the comparator circuit (208) configured to provide an output signal (504) responsive to detection of voltage pulses across the output coil (207). [FIG.

Abstract: A smart phone case assembly includes a case that is structured to insertably receive a smart phone. The case has a plurality of holes extending through the case and each of the holes is strategically located to facilitate control buttons of the smart phone and a camera of the smart phone to be exposed when the smart phone is positioned in the case. A clip is hingedly disposed on the case and the clip is positionable in a stored position having the clip resting against the case. The clip is positionable in a deployed position having the clip angling away from the case. The clip insertably receives a brim of a hat to secure the case to the brim thereby facilitating the smart phone to be oriented for recording video footage.

Abstract: A mobile device cover includes a front frame, a middle frame, and a back frame. The mobile phone is placed between guides of the middle frame and then enclosed by the front frame which has an opening for the screen of the mobile phone. The back frame is mounted on the middle frame, thereby enclosing the printed circuit board and the rechargeable battery. Lights on the printed circuit board are visible through the back frame which is transparent or semi-transparent.

Abstract: A stretchable net cover or case for a mobile electronic device that provides multiple grasp points and configurations, providing a user with a plurality of ways to hold and use their devices. A user may slide one or more fingers through openings in the webbing to grasp the device, may slide the webbing over a forearm, or may hook the device to a purse, belt loop, carabiner, lanyard, retractable or static leash via the webbing. The cover may be provided as an add-on, i.e., designed for use over a mobile electronic device alone or a device enclosed within a case, or may be provided as part of a case for a mobile electronic device.

Abstract: Disclosed is an electronic device including a plurality of antennas, a plurality of radio frequency circuits, a first transceiver, a second transceiver, a switching circuit configured to connect the plurality of radio frequency circuits to the first transceiver or the second transceiver, a processor, and a memory. The electronic device may be configured to switch a receiving path by connecting at least one of a plurality of receiving paths to another transceiver based on reception performance of the plurality of receiving paths.

Abstract: An electronic device may include wireless circuitry having a mixer configured to receive an oscillating signal from oscillator circuitry. The oscillator circuitry can include a chain of buffer circuits sometimes referred to as oscillator driver circuitry. Transformers may be coupled at the input and output of each buffer circuit in the chain. Adjustable biasing circuits may be formed at the input of a selected buffer circuit in the chain of the buffer circuits. The adjustable biasing circuits can be digital-to-analog converters (DACs). The adjustable biasing circuits may be configured to apply a differential direct current (DC) offset voltage to the input of the selected buffer circuit. The differential DC offset voltage can have a value chosen to minimize a second harmonic component of the oscillator driver circuitry. Configured and operated in this way, a second harmonic conversion gain of the mixer can be reduced and can improve the transmit and receive performance of the wireless circuitry.

Abstract: Performance is improved in a wireless communication terminal in which an antenna is connected to a transmission circuit and a reception circuit. A transmission/reception switching circuit includes a first N-type transistor and a second N-type transistor. The first N-type transistor has a drain connected to the antenna and a gate to which a constant voltage is applied. Furthermore, the second N-type transistor has a drain connected to a source of the first N-type transistor and a gate to which a transmission signal is input. Furthermore, the second N-type transistor supplies a reception signal from one of a source and the drain.

Abstract: A cable network system for bidirectionally communicating signals at an enhanced duplex frequency range, which may be between about 5 MHz and about 650 MHz. This system may include a first amplifier, which may be configured to condition an upstream signal proceeding from a subscriber premises to a headend, without necessarily conditioning a downstream signal proceeding from the headend to the subscriber premises, a second amplifier, which may be configured to condition the downstream signal without necessarily conditioning the upstream signal, and a shaping circuit, which may condition the upstream and downstream signals. This system also may simultaneously, or in an overlapping or offset manner, communicate signals at a full duplex frequency range without a diplex filter.

Abstract: An apparatus and method for transmitting information from an emergency power system (EPS) to control devices of remotely connected loads without any additional hardware or wiring. The EPS causes the frequency, phase or magnitude of an AC power signal to be varied according to an established protocol, that is detected by the remote control device, which operates the load in accordance with the protocol.

Abstract: A magnetic signal receiving device and a magnetic field communication system are disclosed. The magnetic signal receiving device includes a signal detector including a magnetic sensor and configured to detect a magnetic signal using the magnetic sensor, a signal amplifier configured to amplify the magnetic signal detected by the signal detector, and a demodulator configured to restore the amplified magnetic signal received from the signal amplifier into an original signal.

Abstract: A passive radio frequency identification (RFID) reader is configured to dynamically vary the Q factor of its resonant antenna coil circuit in order to optimize its performance under different conditions. This RFID reader suitably provides optimal performance for both transponder reading and transponder writing operations, rather than being designed for optimal performance for only one operation or the other, or some fixed compromise between them.

Abstract: A system and a method are disclosed for communicating with multiple transmission and reception points (multi-TRPs). According to an embodiment, the method includes receiving transmission configuration indicator (TCI) state information specifying an indicated TCI state set including one or more activated TCI states; receiving an indication of association between the indicated TCI state set and one or more TRPs; and identifying, based on the indication of association, one or more TRPs of the multi-TRPs to apply a configuration of the indicated TCI state set.

Abstract: A method and a device for multi-antenna transmission in a user equipment and a base station are disclosed in the present disclosure. The user equipment first receives a first signaling, receives a first wireless signal, and transmits first information. K antenna port groups are used to transmit the first wireless signal. The first signaling is used to determine the K antenna port groups. The K antenna port groups respectively correspond to K channel quality values. KI antenna port groups of the K antenna port groups correspond to K1 channel quality values of the K channel quality values. The K1 is a positive integer less than or equal to the K. A first proportional sequence corresponds to a ratio(ratios) among the K1 channel quality values. The first information is used to determine the K1 antenna port groups and the first proportional sequence.

Abstract: In an aspect, a wireless node may determine a sub-panel configuration associated with a reconfigurable intelligence surface (RIS) that includes a plurality of sub-panels. The wireless node may transmit or receive one or more signals via one or more sub-panels of the plurality of sub-panels in accordance with the sub-panel configuration.

Abstract: A method in an adaptive filter system is provided. The method comprises obtaining parameters for a plurality of branches of the adaptive filter system. The method further comprises computing gradient-based information for a selected one of the plurality of branches. The method further comprises updating the parameters for the plurality of branches based on the gradient-based information for the selected branch. An adaptive filter system is also provided.

Abstract: A receiver receives a multicarrier signal from a wireless communication network and determines subcarrier values of the multicarrier signal. A decoder decodes the subcarrier values to produce a set of data symbols. The multicarrier signal is characterized by a set of modulated pulse waveforms, which results from a sum of the subcarriers. Each of the modulated pulse waveforms has a different time offset. The decoder employs a set of codes for decoding the baseband signal, wherein each code comprises a different linearly increasing phase. Each of the linearly increasing phases corresponds to one of the different time offsets.

Abstract: A UE may receive information indicating a layer number and a first transmit precoding matrix index (TPMI) to be used for a first physical uplink shared channel (PUSCH). The UE may also receive information indicating a second TPMI to be used for a second PUSCH. The first TPMI and the second TPMI correspond to the layer number. The UE may transmit data on the first PUSCH over a carrier according to the layer number and the first TPMI, transmit the same data on the second PUSCH over the carrier according to the layer number and the second TPMI, for PUSCH repetition transmissions.

Abstract: A method of a terminal may comprise: receiving a reference signal from a base station; generating a precoding vector based on the reference signal; generating a low-dimensional precoding vector by performing dimensionality reduction transformation on the precoding vector; quantizing the low-dimensional precoding vector; and transmitting the quantized low-dimensional precoding vector to the base station.

Abstract: A method of processing a plurality of multiple-input multiple-output (MIMO) signals for transmission over a plurality of communication channels can include precoding the plurality of signals prior to transmission, the precoding incorporating channel state information in relation to the plurality of communication channels, the precoding further incorporating: a priority ranking of a first channel of the plurality of communication channels relative to a second channel of the plurality of communication channels; and/or an error rate required by a channel of the plurality of communication channels; and/or an amount of noise experienced by a channel of the plurality of communication channels.

Abstract: A broadband millimeter wave beam tracking method based on vehicle movement trajectory recognition, which relates to the field of wireless communication.

Abstract: Techniques for beam width control, and devices and components including apparatus, systems, and methods for beam width control are described herein.

Abstract: This disclosure provides a method of controlling a transmission of a wireless signal in a wireless telecommunications network, the wireless telecommunications network including a transmitter, a multi-layer transmissive Reconfigurable Intelligent Surface (RIS) including a first transmissive RIS layer and a last transmissive RIS layer, and a receiver.

Abstract: Coordinated signal processing at at least a first and second transceiver integrated circuit (IC) configured to commonly process aggregated signal-port IQ data packets; and, each transceiver IC having a transmit signal processing circuit configured to process the commonly-processed aggregated signal-port IQ data packets in accordance with frequency-specific beam-tilt information received in control message packets. The frequency-specific electronic beam tilt may be applied to either a designated component carrier, or to a designated subset of subcarriers within a given component carrier.

Abstract: In an embodiment, an apparatus includes one or more electrical components. The one or more electrical components are configured to encode each data beam of a first plurality of data beams of a first channel to generate an encoded first plurality of data beams. The one or more electrical components are configured to encode each data beam of a second plurality of data beams of a second channel to generate an encoded second plurality of data beams. The one or more electrical components are configured to generate a combined channel comprising an aggregation of at least a portion of the encoded first plurality of data beams and at least a portion of the encoded second plurality of data beams.

Abstract: An electronic device, which comprises a memory, a processor, and a serial number length adjustment program stored in the memory and operable on the processor is disclosed. The serial number length adjustment program is executed by the processor to implement following functions: performing an angle estimation algorithm on all user equipments (UEs) through a low-frequency band to estimate beam angles of the UEs relative to the electronic device; generating high-frequency band beams of the UEs relative to the electronic device according to the estimated beam angles; and enabling the electronic device to communicate with the UEs according to the generated high-frequency band beams.

Abstract: Techniques are described to indicate beamforming related information to a smart node that forwards signals to a base station (BS) and/or a user equipment (UE). An example wireless communication method includes receiving, by a first network node from a second network node, a configuration information that indicates information about a number of spatial settings configured for the first network node, where each of the number of spatial settings corresponds to a spatial domain filter used by the first network node to communicate with one or more communication nodes.

Abstract: Configuring channel state information (CSI) reporting at a user equipment (UE) in a high speed train scenario may include, in response to being within range of a first transmission and reception point (TRP) of a plurality of TRPs associated with an HST, decoding a CSI reporting configuration communication received from a network. The CSI reporting configuration indicating that CSI reporting is to be performed in an HST scenario and being configured for the HST scenario. Measurements based on the decoded CSI reporting configuration received from the network may be performed. A CSI report communication associated with the HST scenario based on the measurements may be encoded for transmission to the network.