Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for training and deploying machine-learned communication. One of the methods includes: receiving an RF signal at a signal processing system for training a machine-learning network; providing the RF signal through the machine-learning network; producing an output from the machine-learning network; measuring a distance metric between the signal processing model output and a reference model output; determining modifications to the machine-learning network to reduce the distance metric between the output and the reference model output; and in response to reducing the distance metric to a value that is less than or equal to a threshold value, determining a score of the trained machine-learning network using one or more other RF signals and one or more other corresponding reference model outputs, the score indicating an a performance metric of the trained machine-learning network to perform the desired RF function.

Abstract: A suspended device structure comprises a substrate, a cavity disposed in a surface of the substrate, and a device suspended entirely over a bottom of the cavity. The device is a piezoelectric device and is suspended at least by a tether that physically connects the device to the substrate. The tether has a non-linear centerline. A wafer can comprise a plurality of suspended device structures. A device structure can comprise a device over a sacrificial portion or cavity and a tether with a tether opening extending to the sacrificial portion or cavity. The tether or tether opening can have a T shape. The tether can have a tether length at least one third as large as a device length and the device can have a device length at least twice as large as a device width.

Abstract: An analog tamper-detection apparatus (ATAMP) for onboard analysis of a target device includes a plurality of antennas, each antenna of the plurality of antennas disposed within the target device and being electrically isolated from components of the target device. The ATAMP device further includes radio frequency (RF) front-end (RFFE) transmitter circuitry coupled to the plurality of antennas, the RFFE transmitter circuitry configured to illuminate the target device with a plurality of electromagnetic signals emitted via the plurality of antennas, to generate a plurality of mixed RF signals. The ATAMP device further includes RFFE receiver circuitry configured to receive emissions from the target device based on the mixed RF signals, and processing circuitry configured to perform subsequent analysis and evaluation of the target device based on the received emissions. The processing circuitry further generates a notification of the subsequent analysis and evaluation.

Abstract: In some embodiments, a surface-mountable device can include an electrical element and a plurality of terminals connected to the electrical element. The surface-mountable device can further include a body configured to support the electrical element and the plurality of terminals. The body can have a rectangular cuboid shape with a length, a width, and a height that is greater than the width. The body can include a base plane configured to allow surface mounting of the device.

Abstract: A model generation method includes updating, by at least one processor, a weight matrix of a first neural network model at least based on a first inference result obtained by inputting, to the first neural network model which discriminates between first data and second data generated by using a second neural network model, the first data, a second inference result obtained by inputting the second data to the first neural network model, and a singular value based on the weight matrix of the first neural network model. The model generation method also includes at least based on the second inference result, updating a parameter of the second neural network model.

Abstract: Aspects of the subject disclosure may include, a system that facilitates receiving a first electromagnetic wave propagating along a transmission medium, detecting, according to the first electromagnetic wave, an obstruction on a first portion of an outer surface of the transmission medium, responsive to the detecting the obstruction, configuring a material to have similar properties to the obstruction, the material being positioned along a second portion of the outer surface of the transmission medium, and generating a second electromagnetic wave that propagates along the transmission medium without relying on an electrical return path to facilitate propagation of the second electromagnetic wave along the transmission medium, the material facilitating propagation of the second electromagnetic wave from the second portion of the outer surface of the transmission medium to the first portion of the transmission medium affected by the obstruction. Other embodiments are disclosed.

Abstract: Devices and methods for providing communication channel congestion levels to determine whether to apply power and/or time back-offs, and if so, how to apply said back-offs. The device may be configured to estimate a congestion level of a communication channel, wherein the congestion level indicates an availability for transmissions over one or more time periods; determine a projected time back-off for an ensuing packet transmission based on the congestion level; and determine whether to apply a transmission back-off based on the projected time back-off and a transmission energy budget based on one or more time-averaging specific absorption rate (TAS) parameters for regulating a radiation exposure to a user of the device.

Abstract: A tree-based format may be implemented for data stored in a data store. A table may be maintained across one or multiple storage nodes in storage slabs. Storage slabs may be mapped to different nodes of a tree. Each node of the tree may be assigned a different range of distribution scheme values which identify what portions of the table are stored in the storage slab. Storage slabs mapped to child nodes in the tree may be assigned portions of the range of distribution scheme values assigned to a parent. Storage nodes may be added or removed for storing the table. Storage slabs may be moved from one storage node to another in order to accommodate the addition or removal of storage nodes.

Abstract: A radio frequency transmitter includes a digital-to-analog converter, an analog baseband processor, and a modulator. The digital-to-analog converter is configured to convert a digital frequency-converted signal into a first analog signal, where the digital frequency-converted signal is obtained by performing digital frequency conversion on a digital baseband signal based on a first frequency signal; the analog baseband processor is configured to perform filtering and gain adjustment on the first analog signal to obtain a second analog signal; and the modulator is configured to perform up conversion based on a second frequency signal and the second analog signal, to obtain a radio frequency signal, where the second frequency signal is determined based on a local frequency signal and the first frequency signal.

Abstract: An origination device (e.g., a base station) receives relaying information from a signal forwarding device in a grant or a broadcast message. The relaying information can be information pertaining to channel conditions and/or quality (e.g., a Channel Quality Indicator) of a first communication link between the signal forwarding device and a destination device, and/or an encoding rate based on channel conditions associated with the first communication link. The origination device utilizes the relaying information to determine a first set of encoding parameters that correspond to channel conditions associated with the first communication link between the signal forwarding device and a destination device. The origination device encodes a first set of data according to the first set of encoding parameters and transmits the encoded first set of data to the signal forwarding device. The signal forwarding device transmits the encoded first set of data to the destination device.

Abstract: According to an aspect, a method in a wireless communication receiver comprises receiving a radio frequency (RF) signal, delaying the RF signal with a set of time delays, shifting the RF signal with a set of offset frequencies, compressing in time the RF signal with a set of compression factors, correlating the RF signal after subjecting to said delaying, shifting and compressing in time with a reference signal, and selecting a first delay, first offset frequency, and first compression ratio that corresponds to a peak resulting from said correlating, wherein the said first delay, first offset frequency, and first compression ration representing the difference between the RF signal and the reference signal.

Abstract: An electronic device, includes an intelligent reflecting surface and an electronic device controller. The intelligent reflecting surface is configured to reflect all or a part of a received signal. The electronic device controller is configured to control the intelligent reflecting surface to determine a first phase of the intelligent reflecting surface to increase a relay gain of first data of the received signal, determine a second phase related to second data, and control a phase of the intelligent reflecting surface based on a sum of the first phase and the second phase to reflect the first data and the second data to a receiving device by beamforming.

Abstract: In an aspect of the disclosure, an apparatus for wireless communication is provided. The apparatus may include several detectors, each of which may be configured to detect a signal received by a corresponding antenna of several antennas. The apparatus may include a processing system configured to detect a remote apparatus based on outputs from the detectors. The apparatus may include several modem radio frequency chips each including a corresponding detector of the several detectors, and a modem baseband chip including the processing system. The processing system may be configured to allow at most one of the detectors to output a detection declaration to the processing system at a time. The processing system may be configured to send a power-down command to and disconnect from each of the detectors that does not detect the signal from a corresponding antenna of the several antennas.

Abstract: An apparatus includes multiple signal paths for signal transmission, and control circuitry. The multiple signal paths include a first signal path and a second signal path. The first signal path is configured to convert a digital baseband signal to a first radio frequency (RF) signal having a first frequency and a first gain. The second signal path is configured to convert a digital baseband signal to a second RF signal having a second frequency and a second gain, wherein the second gain is less than the first gain. The control circuitry is coupled to the plurality of signal paths and is configured to receive one or more control signals to enable selective activation of at least one signal path of the plurality of signal paths.

Abstract: A computer-implemented method of establishing metadata associated with a transaction in a transaction processing system having application logic for executing the transaction, the computer-implemented method includes receiving, from a requestor, request data associated with the transaction, the request data comprising data and metadata. The method also includes peeking, during receiving the request data, of the request data looking for the metadata associated with the transaction and responsive to finding metadata associated with the transaction, directly instantiating an instance of application logic.

Abstract: Embodiments of this application provide a power allocation method and a related device. The method includes: receiving, by a terminal device, first downlink control information sent by a network device, where the first downlink control information includes first power allocation information for a plurality of transport layers; determining, by the terminal device, a first transmit power of each of the plurality of transport layers based on the first power allocation information; and sending, by the terminal device, first uplink data based on the first transmit power of each transport layer. Transmission efficiency of a system can be improved by implementing the embodiments of this application.

Abstract: Systems and methods for performing structure and attribute based graph partitioning. An exemplary system can receive a plurality of transactions, with each transaction identifying a point of sale and an item exchanged by the transaction. The system can generate a structure graph of the plurality of transactions and receive a request to partition the structure graph into sub-categories. The system can then retrieve, from a database, attributes of each respective structure vertex in the structure vertices. Using those attributes and the structure graph, the system can generate a structure-attribute graph. The system can then generate a unified neighborhood matrix of the structure-attribute graph; and partition the structure graph based on the unified neighborhood matrix.

Abstract: A method and transmission system for amplifying and providing navigation signals. The system comprises a splitter circuit configured to receive a plurality of radio frequency (RF) signals oscillating at at least two different frequencies f1 and f2. The splitter circuit is further configured to split and forward the RF signals having the f1 frequency to a first bandpass filter and the RF signals having the f2 frequency to a second bandpass filter. The system further comprises a first tunable amplifier configured to receive the RF signals from the first bandpass filter. The system further comprises a second tunable amplifier configured to receive the RF signals from the second bandpass filter at substantially the same time as the first tunable amplifier's receipt of the RF signals from the first bandpass filter. The first tunable amplifier is further configured to amplify its RF signals across a first band centered around the frequency f1.

Abstract: Aspects of wireless communication are described, including a radiofrequency (RF) amplifier chip, configured for transmitting or receiving data, comprising a first substrate comprising a first material and a second substrate comprising a second material that is different from the first material. The first substrate and the second substrate may be lattice-matched such that an interface region between the first substrate and the second substrate exhibits an sp3 carbon peak at about 1332 cm·1 having a full width half maximum of no more than 5.0 cm·1 as measured by Raman spectroscopy. In some aspects, the first substrate and said second substrate permit said chip to transmit or receive data at a transfer rate of at least 500 megabits per second and a frequency of at least 8 GHz. In some aspects, the RF amplifier chip is part of a satellite transmitter.

Abstract: An apparatus, method and computer program for predicting a future quality of service of a wireless communication link based on a predicted future environmental model t predicted by determining a trajectory of active wireless transceivers. The method includes determining an environmental model of active transceivers in the environment of the mobile transceiver, determining information on a trajectory of the active transceivers, determining a predicted future environmental model of the active transceivers at a point in time of the future based on the information on the trajectory of the active transceivers, and predicting the future quality of service of the wireless communication link for the point in time of the future using a machine-learning model. The machine-learning model provides information on a predicted quality of service for a given environmental model. The predicted future environmental model is used as input to the machine-learning model.