Abstract: Techniques for securely commissioning wireless internet-of-things (IoT) devices using estimates of the distance to the device to be commissioned. An example method, in a first device comprising a Wi-Fi station (STA), comprises the step of initiating or responding to initiation of a commissioning or provisioning procedure with a second device comprising a Wi-Fi STA, using Wi-Fi signaling, and determining an estimated distance or estimated round-trip travel time between the first and second devices, using timing information obtained from one or more messages exchanged between the first and second devices using Wi-Fi signaling. The example method further comprises determining whether to abort or continue with the commissioning or provisioning procedure, based on the estimated distance or estimated round-trip travel time.

Abstract: Implementations disclosed describe a programmable analog subsystem (PASS) having a plurality of reconfigurable analog circuits. The PASS may be coupled to an input/output device to receive an input signal and to an interface to communicate data with a central processing unit. A controller may be configured, based on a plurality of parameters stored at the controller, to configure the plurality of reconfigurable analog circuits into a first PASS state. The PASS may process the first input signal through the plurality of reconfigurable analog circuits in the first PASS state to generate a first output value based on the first input signal. Responsive to a trigger event, the controller may reconfigure the plurality of reconfigurable analog circuits into a second PASS state different from the first PASS state. The PASS may perform a function based on the first output value in the second PASS state.

Abstract: One or more devices, systems, and/or methods are provided. In an example of the techniques presented herein, an oscillator comprises a voltage controlled oscillator configured to generate an output clock based on a drive signal, a frequency to voltage converter having a time constant and configured to generate a feedback voltage having a decay cycle based on the time constant and a frequency based on a frequency of the output clock, and an integrator configured to generate the drive signal based on an integration of the feedback voltage and a reference voltage.

Abstract: The embodiments described herein are directed at techniques to de-correlate Bluetooth interference seen across WLAN receive antennas/space in a Bluetooth transceiver/WLAN transceiver combination device. A Bluetooth interference whitening technique may be utilized, wherein a whitening matrix is computed based on a leakage signal resulting from a training signal transmitted by the Bluetooth transceiver. The leakage signal may leak in to the WLAN transceiver and a set of attributes is calculated for each frequency the leakage signal is received on. One or more whitening matrixes are calculated based on the set of attributes for each frequency the leakage signal is received on. In response to the WLAN transceiver receiving a signal of interest, an appropriate whitening matrix from the one or more whitening matrixes is selected and is then applied to the received signal of interest to de-correlate any interference generated as a result of the Bluetooth transmission.

Abstract: Disclosed are sensing systems and methods that eliminate CPU intervention or interrupts when performing sensor scans of a touch interface, supports low power sensing operation without requiring periodic wake up of the CPU, and is scalable to multi-channel or multi-chip sensor configuration to support large touch screens or a high number of sensors. Sensor scanning is configured and controlled by an autonomous engine and comparison is completed by wake-up detection logic, operable without CPU interaction.

Abstract: A method can include, in an access point (AP) configured to control data transfers for associated stations (STAs) in time intervals, storing a unique identifier and quality-of-service (QoS) requirement for each STA of a first set in a nonvolatile memory of the AP. In response to a STA associating with the AP, if the associating STA is in the first set, allocating time for the STA in the time intervals to meet the QoS requirement of the STA without receiving transmitted QoS data from the STA, and if the associating STA is not in the first set, establishing a QoS for the STA having a lower priority than any associated STAs of the first set. Corresponding systems and devices are also disclosed.

Abstract: Front-end circuits that combine inductive and capacitive sensing are described. In one embodiment, an apparatus includes a plurality of inductive elements, an inductive measurement circuit, and a frequency divider circuit. The inductive measurement circuit is to output a first signal with a first frequency. The first signal is associated with an inductance change of one of the inductive elements. A feedback circuit can maintain the sinusoidal operation of the first signal. The frequency divider circuit can generate a second signal with a second frequency that is lower than the first frequency.

Abstract: A capacitance sensing device includes a transmit (TX) generator for generating a sequence of receive (RX) signals by applying each TX signal pattern in a sequence of TX signal patterns to a set of sensor electrodes. For each TX signal pattern in the sequence of TX signal patterns, and for each subset of three or more contiguous sensor electrodes of the set of sensor electrodes, the TX generator applies to the subset one of a first excitation signal and a second excitation signal. The plurality of subsets includes at least half of the sensor electrodes in the set of sensor electrodes. The capacitance sensing device also includes a sequencer circuit coupled with the TX generator. For each TX signal pattern in the sequence of TX signal patterns, the sequencer circuit determines a next subsequent TX signal pattern in the sequence based on a circular rotation of the TX signal pattern. The capacitance sensing device also includes a processing block coupled with the TX generator.

Abstract: Systems, methods, and devices implement coexistence enhancement for collocated wireless transceivers. Methods include determining, using a processing device, a latency parameter associated with a wireless device comprising a first transceiver compatible with a first communications protocol and a second transceiver compatible with a second communications protocol. Methods also include identifying, using the processing device, a number of anchor points based, at least in part, on the latency parameter, each of the anchor points representing a periodic connection event for the second transceiver. Methods further include updating a radio frequency (RF) active signal to skip at least one transmit operation and receive operation of the second transceiver based on the identified number of anchor points.

Abstract: A wireless device includes a receiver to receive a packet via one or more antennas. A frame synchronization detection circuit coupled to the receiver identifies a frame synchronization pattern within a portion of the packet. A correlation circuit coupled to the frame synchronization detection circuit computes one or more values of a correlation peak using a correlation method. A fractional timing approximation circuit coupled to the correlation circuit determines a pulse shape using the one or more values of the correlation peak; and determines a fractional timing approximation for the packet using the pulse shape.

Abstract: A frequency compensation circuit determines a target calibration count of a fixed capacitor coupled to a processing device. The frequency compensation circuit identifies a current calibration count of the fixed capacitor. The frequency compensation circuit determines that the current calibration count satisfies a threshold criterion associated with the target calibration count. In response to determining that the current calibration count satisfies the threshold criterion, the frequency compensation circuit adjusts a frequency of an internal oscillator of the processing device based on the current calibration count and the target calibration count.

Abstract: A device includes a transmitter coupled to an antenna, a receiver coupled to the at least one antenna, and a processing device to: cause the transmitter to radiate a radio frequency (RF) signal; receive, via the receiver, a reflective RF signal based on the radiated RF signal; detect, within a data array of the reflective RF signal, a maximum peak among a plurality of signal peaks, the maximum peak being indicative of a first distance to a first object relative to the at least one antenna; and cancel, using cascading peak cancellation on the spectrum, the maximum peak while detecting a first next-highest peak of the plurality of signal peaks compared to the maximum peak, the first next-highest peak being indicative of a second distance to a second object.

Abstract: Techniques are described for using one or more wireless host devices to perform tire localization of TPMS sensor data by determining received signal strength indicator (RSSI) signatures that are unique to the wireless communication channel between a host device and each TPMS sensor. RSSI signatures represents a periodic variation of the wireless communication channel between a host device on the car body and a TPMS sensor in a rotating tire. Characteristics of the communication channel is a function of the wheel angle and is periodic with wheel rotations. The RSSI signatures may be created by matching RSSI measurements of packets received by the host device from a TPMS sensor with wheel angles derived from wheel speed sensor (WSS) data of the anti-lock braking system (ABS). The RSSI signatures are a unique marker of each wheel that may be used to identify the locations of the TPMS sensors for tire localization.

Abstract: Implementations disclosed describe wireless devices and methods for mitigating aggressive medium reservations. A first wireless device comprises a transceiver and a processor coupled to the transceiver. The processor is to detect, within a first transmission received by the transceiver from a second wireless device via a first wireless communication channel, a pattern of medium reservations comprising a reservation duration that satisfies a threshold duration value. The processor is further to cause, in response to detecting the pattern of medium reservations, the transceiver to send a second transmission to an access point (AP) wireless device. The second transmission includes an indication of the pattern of medium reservations. The processor is further to detect a medium reservation mitigation signal within a third transmission received by the transceiver from the AP wireless device.

Abstract: A system includes a memory and a processing device, operatively coupled to the memory, to receive, from a client device via a user interface, input data comprising an initial version of a machine learning model, initialize an operating mode of the user interface for machine learning model building, and generate an enhanced version of the machine learning model in accordance with the operating mode.

Abstract: Implementations disclosed include methods and systems that include obtaining, by a processing device, a first output from a machine learning model, wherein the first output comprises one or more data samples; identifying a first set of data samples of the one or more data samples that satisfies a threshold criterion; generating, using an explainability tool, a weighted value for each data sample of the first set of data samples; and modifying the machine learning model based at least in part on the weighted value for each data sample of the first set of data samples.

Abstract: An example method for estimating the angle-of-arrival (AoA) and other parameters of radio frequency (RF) signals that are received by an antenna array comprises: receiving a plurality of radio frequency (RF) signal power measurements by a plurality of antenna elements at a plurality of RF channels; computing, by applying a machine learning model to the plurality of RF signal power measurements, an estimated RF signal parameter value; and outputting the RF signal parameter value.

Abstract: Systems, methods, and devices for a ball grid array with non-linear conductive routing are described herein. Such a ball grid array may include a plurality of solder balls that are electrically coupled by a non-linear conductive routing. The non-linear conductive routing may include a plurality of routing sections where each of the plurality of routing sections is disposed at an angle to adjacent routing sections.

Abstract: A system and method are provided for capturing a high resolution, high frame rate video using a Universal Serial Bus (USB) port. Generally, the method involves transmitting a High-Definition Multimedia Interface (HDMI) video including a number of video frames from a HDMI-source. Receiving the HDMI video and buffering and splitting each one of the video frames into a plurality of split video frames. Each of the split video frames is converted into a number of USB data packets. USB data packets from each of the split video frames are then interleaved to form a stream of USB data packets. The stream of USB data packets is coupled to a host system, which executes a program to stitch the USB data packets back together to reassemble each of the video frames, and order the video frames to restore or recreate the HDMI video.

Abstract: A system and method reconfiguring an antenna for reducing and/or eliminating the effects of multipath on a phase-based measurement system. The method includes steering an antenna unit into a first direction to cause the antenna unit to generate a first constant tone (CT) signal based on a plurality of multipath signals. The method includes performing a phase measurement on the first CT signal to generate a first phase measurement value. The method includes steering the antenna unit into a second direction to cause the antenna unit to generate a second CT signal based on the plurality of multipath signals. The method includes performing a phase measurement on the second CT signal to generate a second phase measurement value. The method includes determining a change in multipath interference at the antenna unit among the plurality of multipath signals. The method includes re-steering the antenna unit into the first direction.