Abstract: Methods and apparatus, including computer program products, are provided for beam group reporting. In some example embodiments, there may be provided a method that includes receiving, at the user equipment, configuration information to configure the user equipment to report information for beam grouping on measurements on at least one group of channel measurement resources; selecting, by the user equipment, at least one group from a plurality of groups of channel measurement resources, the selecting based on at least one rule provided by the configuration information; and reporting, to a network, information regarding the selected at least one group for the beam grouping. Related systems, methods, and articles of manufacture are also disclosed.

Abstract: In an embodiment, a frequency synthesizer includes a digitally controlled oscillator configured to generate an output clock signal based on a digital control word, a clock divider configured to divide the output clock signal to generate a divided clock signal, a digital-to-time converter configured to generate a feedback clock signal based on the divided clock signal, a time-to-digital converter configured to generate a phase error signal based on a bias control word and a phase difference between a reference clock signal and the feedback clock signal, a loop filter connected to the time-to-digital converter and configured to generate the digital control word based on the phase error signal, and a calibration unit configured to generate a training sequence to generate a gain error signal, and modify the bias control word based on the gain error signal to generate a modified bias control word.

Abstract: Methods and systems for communication and sensing systems. The disclosed method includes, among other things, responsive to receiving a plurality of channel frequency response (CFR) measurements from an antenna operating at a low-bandwidth range, generating a channel state information (CSI) across a high-bandwidth range based on the plurality of CFR measurements and determining, based on the CSI, a Doppler shift across the high-bandwidth range.

Abstract: A WTRU may receive configuration information for channel state information (CSI) feedback and a first CSI reference signal (CSI-RS) transmission. The processor is configured to determine a first subset of beams associated with the first CSI-RS transmission and a second subset of beams associated with the first CSI-RS transmission. The first subset of beams is associated with: a longer validity time than a validity time of the second subset of beams, a lower beam range than a beam range of the second subset of beams, and/or a smaller difference between beam indices associated with consecutive beam domain reporting instances than a difference between beam indices associated with the second subset of beams. The processor may send one or more reports that include an indication of the first and second subset of beams and first and second parameters associated with the first and second subset of beams, respectively.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a synchronization signal block (SSB) transmitted by a base station. The UE may receive system information that includes reconfigurable intelligent surface (RIS) or repeater assisted initial access information that identifies a set of SSBs that are associated with an RIS or a repeater and a modulation signature associated with the RIS or the repeater. The UE may selectively perform initial access using the SSB or search for another SSB based at least in part on the RIS or repeater assisted initial access information. Numerous other aspects are described.

Abstract: Embodiments of this application provide a data transmission method applied to power line communication, and a power line communication apparatus and system. The data transmission method includes: a power line node generates a data frame, where the data frame includes a first field, a second field, and a third field, the first field is used to carry a modulation parameter, the second field is used to carry, in a bit mapping manner, identification information that is of at least one destination node of current multicast and that is configured by the power line node, and the third field is used to carry service data; and the power line node sends the data frame to a node in a power line communication network. According to the data transmission method, data can be efficiently transmitted to a plurality of destination nodes to save bandwidth.

Abstract: Methods and devices for dynamically designated first and second subsets of a plurality of frequency channels as upstream and downstream channels, respectively, for performing wired communications using virtual segmentation between a network controller and an endpoint device. performing virtual segmentation to service an endpoint device. Communications are performed between the network controller and the endpoint device through a wired communication medium using the upstream and downstream channels. The first subset and second subsets of the plurality of channels are designated as upstream channels and downstream channels, respectively, based at least in part on one or both of upstream and downstream channel demand and channel availability.

Abstract: A method, apparatus and computer program is described comprising: obtaining aggregated reference signals received from multiple signal carriers over channels of a mobile communication system, said signal carriers having different carrier frequencies; initialising: a first matrix, a channel power matrix and a noise estimate; and sequentially updating: a channel impulse response estimate, said channel power matrix and said noise estimate using mathematical maximisation; a second matrix; a vector of channel frequency offset; and the first matrix. The sequential updating is repeated until a termination condition reached.

Abstract: A method of self-testing a transceiver integrated circuit substrate includes: providing a test signal to a transmission line that is communicatively coupled, or selectively communicatively coupled, to an input of a power amplifier of a first transceiver subcircuit of the transceiver integrated circuit substrate; providing the test signal from the transmission line to an LNA of an LNA of a second transceiver subcircuit of the transceiver integrated circuit substrate; and measuring the test signal before amplification by the LNA, or after amplification by the LNA, or both.

Abstract: A method for synchronizing in a receiver an IR-UWB signal including data packets having a first preamble portion of at least two sequences of N pulses spaced by period T and each equal to a reference pulse weighted by a complex coefficient cn, n=0 to N?1 indicating the rank of the pulse in the first sequence, and a second preamble portion of at least two sequences equal to the complex conjugate of the first sequence, includes: considering NP successive samples sn, for n=0 to NP?1, of a slice, of duration NT, of the first and respectively second preamble portion of a received packet, determining the sequence of values x n = c ? n P ? * ? s n , and respectively the sequence of values y n = c ? n P ? ? z n , with Ts the sampling period T=P×Ts; determining the frequency fd and fg of the sequence xn and yn, respectively; and computing shift ?f applied to synchronize to the received signal.

Abstract: This invention relates to a DAS comprising a digital donor interface circuit, an RF donor interface circuit, a first DAS propagation path, a second DAS propagation path, and a radio unit and configured to obtain a first propagation time delay for the first DAS propagation path and a second propagation time delay for the second DAS propagation path, obtain at least one of a time delay of the RF donor interface circuit and the digital donor interface circuit, determine a first downlink time delay value, and transmit the first downlink time delay value to a delay adjustment circuit in a downlink path of the DAS.

Abstract: A device includes a receiving circuit, a processing circuit, and a transmitting circuit. The receiving circuit generates a clock input signal and includes a plurality of receivers, each of which receives a data input signal and generates a first data output signal. Each receiver includes a delay line that is devoid of a duty cycle corrector (DCC), that has a predetermined number of delay elements, and that introduces a propagation delay to the data input signal by a fixed amount that substantially matches a propagation delay of the clock input signal. The processing circuit processes the first data output signal and generates a second data output signal. The transmitting circuit transmits the second data output signal to a data signal-receiving device.

Abstract: A technique uses linear prediction to determine the location of spurious content in a digital phase-locked loop and suppresses the spurious content from propagating to the clock output. In at least one embodiment, the technique implements an iterative (e.g., recursive) computation.

Abstract: Disclosed are a method and device by which a terminal transmits CSI in a wireless communication system. A method by which a terminal transmits CSI in a wireless communication system, according to one embodiment of the present disclosure, comprises the steps of: receiving configuration information related to at least one reference signal (CSI-RS) resource from a base station; receiving a CSI-RS from the base station on the basis of the at least one CSI-RS resource; and transmitting the CSI using at least one bitmap related to the position of a non-zero coefficient to the base station on the basis of the CSI-RS, wherein the at least one bitmap may include information about the position of the non-zero coefficient in at least one frequency domain base vector and at least one spatial domain base vector corresponding to a combination of specific time domain base vectors.

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for a user equipment (UE) to communicate using ? 2 binary phase shift keying (BPSK) modulation according to extended coding rates. In some cases, the UE may receive configuration information that supports modulation orders for ? 2 ? BPSK modulation extended to include modulation orders otherwise only configured for quadrature phase shift keying (QPSK) modulation. Further, the UE may support dynamic switching between ? 2 ? BPSK and QPSK modulation. For example, the UE may transmit or receive control signaling indicating a modulation order for an uplink transmission, where the UE or a network entity may determine which modulation scheme and order to use according to communication parameters associated with the uplink transmission, the UE, or both.

Abstract: In one aspect, an apparatus includes: a delay line to receive a clock signal and a plurality of settings, each of the settings to indicate a selected tap of the delay line at which to output the clock signal. The delay line is to output a capture clock based on a first setting, and monitor clocks based on additional settings. The apparatus also includes: a data sampler to sample incoming data with the capture clock and output capture data; monitor samplers to sample the incoming data with the monitor clocks and output monitored data; and a monitor circuit to trigger an update to at least one of the settings based on comparison of the capture data to the monitored data.

Abstract: A tracker circuit is provided that includes a first switched-capacitor circuit configured to generate a plurality of first discrete voltages, a second switched-capacitor circuit configured to generate a plurality of second discrete voltages, and a supply modulator configured to selectively output at least one of the plurality of first discrete voltages and the plurality of second discrete voltages to a power amplifier. One of the plurality of first discrete voltages has a level different from levels of the plurality of second discrete voltages, and one of the plurality of second discrete voltages has a level different from levels of the plurality of first discrete voltages.

Abstract: A signal generation device that includes a digital signal processing unit, a plurality of digital-analog conversion units that respectively converts a plurality of digital signals output from the digital signal processing unit into analog signals, and an analog multiplexer that interleaves the analog signals respectively output from the plurality of digital-analog conversion units to generate a broadband signal, in which the digital signal processing unit includes a serial-parallel conversion unit that divides an input signal into a number according to a ratio between a sampling frequency of the plurality of digital-analog conversion units and a clock frequency of the analog multiplexer in a time domain to generate a plurality of divided signals, and a plurality of convolution arithmetic operation units that receives the plurality of divided signals generated by the serial-parallel conversion unit as inputs and generates a plurality of digital signals corresponding to the respective digital-analog conversion

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter node may determine a set of parameters for a waveform to be transmitted by the transmitter node, wherein the waveform is to use an allocated bandwidth that is larger than a sweeping bandwidth of a frequency modulated continuous wave (FMCW) chirp. The transmitter node may transmit the waveform according to the set of parameters. Numerous other aspects are described.

Abstract: Various example embodiments relate to mitigation of a non-linearity in a data communication chain. A method may include: obtaining a data communication signal including a plurality of complex-valued input samples; capturing, from the plurality of complex-valued input samples, a current sample and a set of delayed samples; generating a phase-normalized input signal based on normalizing phase of the current sample and the set of delayed samples by a normalization term, wherein the normalization term is common for the current sample and the set of delayed samples; providing the phase-normalized input signal to a neural network configured to mitigate non-linearity of a data communication chain and to output a complex-valued output sample for each of the plurality of complex-valued input samples; and denormalizing phase of the complex-valued output sample by a denormalization term configured to restore phase of the data communication signal.