Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a first transmit-receive point (TRP), a first channel state information reference signal (CSI-RS) associated with the first TRP and a first beam. The UE may receive, from the first TRP or a second TRP, a second CSI-RS associated with the first TRP or the second TRP, wherein the second CSI-RS is associated with a second beam. The UE may transmit, to the first TRP or the second TRP, an indication of a delta value between a measurement of the first CSI-RS and a measurement of the second CSI-RS. Numerous other aspects are described.

Abstract: Techniques for quickly and accurately determining whether a channel is being used for transmission of data using one of a plurality of communications protocols for low power signals using random data of a packet are disclosed. The techniques increase sensitivity and reduce the false alarm rate for a wide range of signal and noise levels. A noise detection technique uses an adaptive window size for fast noise detection that increases the rate of scanning channels during a signal identification period. In a BLE1M detection mode, detection of clusters of zero frequency deviation are used to reduce the false detection rate. Adaptive Zigbee symbol detection improves detection sensitivity beyond ?97 dBm. The techniques use a chip-based differential to generate frequency deviation samples for Zigbee detection or data filtering frequency deviation samples generated using sample-based differentials based on an oversampled received signal to improve the signal-to-noise ratio.

Abstract: This disclosure relates to techniques for providing an artificial intelligence based framework for performing channel state information reporting in a wireless communication system. A cellular base station may provide system information for a cell to a wireless device. The system information may indicate that the cell supports artificial intelligence based channel state information reporting. The wireless device may provide wireless device capability information to the cellular base station. The capability information may indicate that the wireless device supports artificial intelligence based channel state information reporting. The wireless device may determine an artificial intelligence model to use to perform channel state information reporting with the cell, and may perform channel state information reporting using the selected artificial intelligence model.

Abstract: Clock data recovery circuitry, for a deserializer of a data transceiver, includes a clock recovery loop with a first feed-forward equalizer having a smaller number of taps and operating on received signals to recover a clock signal, and a data recovery loop including a second feed-forward equalizer having a larger number of taps, operating on received signals to recover a data signal. Output of the second feed-forward equalizer is coupled to output of the first feed-forward equalizer to improve recovery of the clock signal. The clock recovery loop may include adaptation circuitry configured to operate on output of the first feed-forward equalizer to counteract effects, on the clock signal, of adaptation of the second feed-forward equalizer by signals output by a decision feedback equalizer in the data recovery loop.

Abstract: A user equipment (UE) can connect to an evolved universal terrestrial radio access network (E-UTRAN) new radio (NR) dual-connectivity (EN-DC) network using both a Long Term Evolution (LTE) anchor link and a 5G NR non-anchor link. The UE shares RF chain components (e.g., antennas) between the LTE and NR links. The UE uses various techniques for controlling or modifying NR sounding reference signal (SRS) transmissions and/or LTE operations to avoid interruption on LTE operations due to NR SRS transmissions.

Abstract: An apparatus: obtains K downlink channel weight matrices based on K pieces of downlink channel information sent by K UEs, where the downlink channel information is fed back by the UE in response to a preset reference signal sent by the base station, the downlink channel weight matrix is an NT×rank-dimensional matrix, and rank is a quantity of signal streams received by the UE; obtains K×rank first initial phase difference matrices and K×rank second initial phase difference matrices based on the K downlink channel weight matrices and a first polarization direction and a second polarization direction of transmit channels of the base station; obtains a cell initial phase difference matrix based on the K×rank first initial phase difference matrices and the K×rank second initial phase difference matrices; and implements initial phase correction of the transmit channels based on the cell initial phase difference matrix.

Abstract: A receiver includes a decision feed forward equalization (DFFE) system that generates, based on a digital signal that includes at least one intersymbol interference (ISI) value introduced by a communication channel, a detected signal including a set of detected symbol values. The DFFE system cancels the at least one ISI value from the detected signal using the set of estimated transmitted symbols and a set of tap coefficients to obtain a compensated signal and a set of compensated symbol values.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information that identifies a first precoder indicator selected from a set of precoder indicators and a second precoder indicator selected from a subset of the set of precoder indicators. The UE may communicate using multiple antenna panels based at least in part on the first precoder indicator and the second precoder indicator. Numerous other aspects are provided.

Abstract: A receiver utilizes loop-unrolled decision feedback equalization (DFE). For each sample, two comparators, each configured with different thresholds, sample an input signal. The output of one of these comparators is selected and used as the output of the receiver and may be optionally input to additional DFE circuitry. The output of the other (non-selected) comparator is used to adjust an input offset voltage of that same comparator. Adjustments to the offset voltages of the comparators may be based on a statistical analysis of the respective outputs of the two comparators when not selected. Adjustments to the offset voltages of the comparators may be based on comparisons between the respective outputs of the two comparators when not selected to the outputs of a reference comparator that has been calibrated for minimal or zero offset.

Abstract: An ultra-wideband, UWB, receiver module (213) comprising: an antenna for wirelessly receiving UWB signalling from a UWB transmitter module (212) and a processor. The processor is configured to: determine a channel impulse response, CIR, (519) of the wirelessly received UWB signalling, wherein the CIR comprises a plurality of channel taps each having a tap-response-value; identify a predetermined feature (520) in the CIR and an associated channel tap; and based on the channel tap that is associated with the identified feature (520) in the CIR (519), synchronize the UWB receiver module (213) for reception of subsequent UWB signalling.

Abstract: A reception method implemented by a reception device implementing a plurality of receive antennas. The method includes: estimating an interference covariance matrix representative of the spatial structure of the interference between the receive antennas; and transmitting at least one item of information about a quality of service associated with at least one acquisition technique for acquiring knowledge of the channel at transmission, able to be used by a transmission device implementing a plurality of transmit antennas, obtained from the interference covariance matrix.

Abstract: According to various embodiments, an electronic device may comprise an ultra-wideband (UWB) communication circuit, a Wi-Fi communication circuit and a processor controlling the UWB communication circuit and the Wi-Fi communication circuit. The processor may be configured to identify an operation channel of the UWB communication circuit, identify a communication band of the Wi-Fi communication circuit, overlapping the operation channel of the UWB communication circuit, and when the communication band overlapping the operation channel is activated, determine whether to simultaneously perform Wi-Fi communication through the activated communication band and UWB communication through the operation channel. Other various embodiments are possible as well.

Abstract: A communication apparatus comprises a radio transceiver and a modem processor. The radio transceiver is configured to transmit or receive signals. The modem processor is coupled to the radio transceiver and configured to perform operations comprising: performing a beam management, to train a first receiver (Rx) beam; receiving a physical downlink shared channel (PDSCH) according to the first Rx beam; selecting at least one second Rx beam according to a scenario, if a first performance indicator of the first Rx beam is lower than a previous first performance indicator of the first Rx beam by a first threshold; determining at least one second performance indicator of the PDSCH according to a round-robin test; selecting a third Rx beam from the at least one second Rx beam according to the at least one second performance indicator; and receiving the PDSCH according to the third Rx beam.

Abstract: An apparatus for wireless communication includes a memory and a processor coupled to the memory. The processor is configured to: receive one or more signals for determining frequency dependent in-phase quadrature imbalance (FDIQI) estimates; generate one or more FDIQI estimates based on the one or more signals; and transmit the one or more FDIQI estimates to a network node.

Abstract: An operating method of a wireless communication device includes calculating an effective channel matrix between the wireless communication device and a base station based on transmission characteristic information and channel information, the transmission characteristic information corresponding to the wireless communication device, and the channel information corresponding to a channel between the wireless communication device and the base station, determining a precoding matrix based on the effective channel matrix, and determining a transmission beamforming vector based on the precoding matrix.

Abstract: The present disclosure relates to a signal processing device and an image display apparatus including the same. A signal processing device according to an embodiment of the present disclosure comprises: a synchronizer configured to perform a Fourier transform based on the received baseband signal; and an equalizer configured to calculate a channel transfer function value, symbol based noise, and subcarrier frequency based noise based on the signal from the synchronizer, and calculate channel state information based on the calculated channel transfer function value, symbol based noise, and subcarrier frequency based noise. As a result, performances for burst noise and narrow band noise can be improved.

Abstract: Exemplary embodiments are disclosed of signal level indicators and antenna assemblies including the same. In an exemplary embodiment, an antenna assembly includes an antenna configured to be operable for receiving signals, a signal level indicator for indicating a strength of signals received by the antenna, and an amplifier coupled for communication with the antenna, the signal level indicator, and a signal output. The amplifier is configured to be operable for amplifying signals received by the antenna.

Abstract: An example apparatus includes: a feed forward equalizer (FFE) with a FFE output, adder circuitry with a first adder input, a second adder input, and a first adder output, the first adder input coupled to the FFE output, a multiplexer (MUX) with a first MUX input, a second MUX input, and a MUX output, the first MUX input coupled to the first adder output, the second MUX input coupled to the FFE output, a decision feedback equalizer (DFE) with a DFE output coupled to the second adder input, and a timing error detector (TED) with a first TED input coupled to the MUX output.

Abstract: Methods, systems, and devices for data inversion techniques are described to enable a memory device to transmit or receive a multi-symbol signal that includes more than two (2) physical levels. Some portions of some multi-symbol signals may be inverted. A transmitting device may determine to invert one or more data symbols based on one or more parameters. A receiving device may determine that one or more data symbols are inverted and may re-invert the one or more data symbols (e.g., to an original value). When receiving or transmitting a multi-symbol signal, a device may invert or re-invert a data symbol by changing a value of one bit of the data symbol. Additionally or alternatively, a device may invert or re-invert a data symbol of a multi-symbol signal by inverting a physical level of the signal across an axis located between or associated with one or more physical levels.

Abstract: An apparatus, method and computer program is described including: receiving, at a receiver of a transmissions system, transmitted signals from each of a plurality of transmitters, wherein each transmitter communicates with the receiver over one of a plurality of channels of the transmission system, wherein each transmitter includes a transmitter algorithm having at least some trainable weights, wherein each transmitter algorithm has the same trainable weights and wherein each of the transmitted signals is based on a perturbed channel symbol generated at the respective transmitter, wherein the channel symbols and perturbations are known to the receiver; updating the weights of the transmitter algorithm, at the receiver, based on a loss function; providing the updated weights to each transmitter of the transmission system; and repeating the receiving and updating until a first condition is reached.