Abstract: The present disclosure relates generally to satellite communication systems, and, more particularly, to trilateration-based satellite location accuracy for improved satellite-based geolocation are provided.

Abstract: Disclosed in some examples are systems, methods, devices, and machine-readable mediums for improved communications between a software-defined radio front-end device and a network-based computing device. Rather than packetize samples together, same bit positions from multiple ADC samples may be packetized together. If a Quality of Service (QoS) metric of the network connection between the RF front-end device and the network-based processing computing drops below a threshold, the RF front-end device may prioritize sending packets with the more significant bits over packets with less significant bits. In other examples, the RF front-end device may prioritize samples corresponding to certain data types over other data types.

Abstract: A embodiment may involve receiving a contact tracing request for a first user identifier that corresponds to a first portable device identifier of a first portable device. The second example embodiment may also involve requesting and receiving, from a first computing device associated with the first user identifier, device adjacency data, wherein the device adjacency data contains a plurality of contact entries, wherein one of the contact entries identifies a second portable device identifier of a second portable device that was wirelessly detected by the first portable device and a timestamp of when the wireless detection of the second portable device occurred. The second example embodiment may involve determining, from the mappings, a second user identifier that corresponds to the second portable device identifier. The second example embodiment may further involve transmitting, to a second computing device associated with the second user identifier, a contact tracing notification.

Abstract: Assigning an appropriate modulation profile for an orthogonal frequency-division multiplexing (OFDM) channel. The current modulation profile assigned to a specific OFDM modem for communicating over a specific OFDM channel is examined to determine whether to consider reassigning the specific OFDM modem to a different modulation profile. Only upon determining consideration should be given, an assessment is made as to which modulation profile, of a set of candidate modulation profiles available to that OFDM modem for communicating over the specific OFDM channel, should be assigned to the specific OFDM modem using linear domain averaging over the OFDM subcarriers of the ratios between a Mean Error Rate (MER) threshold per subcarrier for the specific OFDM modem and the MER reported by the specific OFDM modem per subcarrier. A new modulation profile is assigned to the specific modem based on the assessment.

Abstract: A position tracking system for Tags to collect relative proximity to other Tags using received signal strength, with methods to reduce power consumption with controlled degradation in overall system performance such as location accuracy and frequency of location updates. Configurable parameters for control of tag functions facilitate performance tradeoffs against application requirements. System architecture using mobile phone and gateway for uploading data enables efficient upload of tag data without user intervention. Applications of the disclosure include self-quarantine, contact tracing, mother-infant pairing, location history tracking, and personnel-asset usage monitoring.

Abstract: An equipment comprising an array of radio antennas and a switching device placed as a cutoff between the antennas and the associated reception channels, the switching device comprising a first so-called operational operating mode wherein each input interface is then connected directly to a different output interface so as to connect each antenna with at least the associated reception channel thereof, and a second so-called calibration operating mode, wherein an input interface corresponding to a predetermined antenna is then connected to all the output interfaces so as to transmit the electrical signal coming from the predetermined antenna to all the reception channels, the equipment being adapted for implementing a method for autocalibration of the reception channels when the switching device is in the second operating mode.

Abstract: A system and method establishing control of affordances at a workstation. The method includes the steps of storing affordance preferences in a database for a plurality of portable affordance settings that may be present at a workstation, detecting a subset of affordances present within a first zone associated with the workstation, for each detected affordance in the subset, identifying an affordance setting in the database indicating a user preference, and automatically controlling settings of at least each of the detected affordances in the subset to match the user preferences for the detected affordances.

Abstract: An auxiliary device and system for traffic light detection and communication. The auxiliary device is positionable adjacent to a traffic light. The auxiliary device includes at least one light pipe positionable adjacent to at least one traffic indicator disposed on a surface of the traffic light. The at least one light pipe is capable of carrying a light output from the least one traffic indicator to the auxiliary device. The auxiliary device includes a sensor for sensing the light output, and a processor operatively connected for computer communication to the sensor. The processor receives a measurement from the sensor. The measurement is associated with the light output. The processor detects a state of the light output based on the measurement, and transmits the state to one or more remote vehicles.

Abstract: A radar includes a transmitter antenna unit including a plurality of transmitter antennas arranged in a diagonal direction based on a first horizontal interval and a first vertical interval, a receiver antenna unit including a first receiver antenna group and a second receiver antenna group arranged based on a second horizontal interval, a transceiver configured to transmit a transmission signal through the transmitter antenna unit and receive a reflection signal reflected from a target object through the receiver antenna unit and a processing unit configured to extract information about the target object by processing the received reflection signal.

Abstract: A transmission device includes an imparter configured to impart redundant data to the beginning of each of a plurality of data blocks divided from a data signal, a plurality of THP operators configured to parallelly precode the plurality of data blocks to which the redundant data is imparted, a transmitter configured to sequentially transmit the plurality of data blocks precoded by the plurality of THP operators and the redundant data imparted to each of the plurality of data blocks to a transmission line according to an arrangement order in the data signal, wherein the plurality of THP operators feed back a plurality of pieces of the redundant data to the plurality of data blocks, respectively.

Abstract: A system and a method are disclosed for enabling accurate estimation of a location of a water vessel. In an embodiment, a rescue system transmits a Short Message Service (SMS) message to a user device on the water vessel, the SMS message comprising a selectable option that, when selected, causes a location of the user device to be shared. Based on a selection by a user of the user device of the selectable option, the system receives a plurality of location coordinates from the user device at a plurality of respective times, each respective location coordinate describing a respective location of the user device at its respective time. The system computes an estimated location of the water vessel based on the plurality of location coordinates and an elapsed time between a current time and a time at which a last-received location coordinate was received. The system transmits the estimated location to a responder device.

Abstract: An apparatus comprising: an inductive coupler for coupling inductively with a radio frequency, RF, H-field to provide an alternating RF voltage; a near field, RF, communicator connected to the inductive coupler for performing near field RF communication; an auxiliary circuit connected to the inductive coupler by a rectifier for obtaining DC electrical energy from the alternating RF voltage wherein the auxiliary circuit is arranged to communicate data with the near field RF communicator; wherein the rectifier comprises: a first rectifier input and a second rectifier input for receiving the alternating RF voltage, a first rectifier output and a second rectifier output for providing the DC electrical energy to the auxiliary circuit; a rectifying element connected between the first rectifier input and the second rectifier input wherein the first rectifier output is coupled to an output of the rectifying element and to the first rectifier input by a first inductor.

Abstract: A transmission device that improves data reception quality includes: a weighting synthesizer that generates a first precoded signal and a second precoded signal from a first baseband signal and a second baseband signal, respectively; a phase changer that applies a phase change of i×?? to the second precoded signal; an inserter that inserts a pilot signal into the second precoded signal applied with the phase change; and a phase changer that applies a phase change to the second precoded signal applied with the phase change and inserted with the pilot signal. ?? satisfies ?/2 radians<??<? radians or ? radians<??<3?/2 radians. Each of the first baseband signal and the second baseband signal is modulated via a modulation scheme of quadrature amplitude modulation (QAM) using non-uniform mapping.

Abstract: A system and method for location tracking using Bluetooth Low Energy tracking devices or tags having a button, a light, a sound generating buzzer, and a user replaceable battery are disclosed. The system may include one or more Bluetooth receiving units, which may be user mobile devices, programmed to receive a signal from one of the tracking devices and send the location of the tracking device to the system. The advertising interval or transmission frequency of the tracking devices may be raised or lowered to either increase the location precision or extend the battery life of the tracking devices. In one embodiment, tracking devices may be attached to automobile keys and the automobile's vehicle identification number may be associated with the corresponding tracking device, to allow an automobile dealership to manage the location of a large quantity of keys.

Abstract: A signaling circuit having a selectable-tap equalizer. The signaling circuit includes a buffer, a select circuit and an equalizing circuit. The buffer is used to store a plurality of data values that correspond to data signals transmitted on a signaling path during a first time interval. The select circuit is coupled to the buffer to select a subset of data values from the plurality of data values according to a select value. The equalizing circuit is coupled to receive the subset of data values from the select circuit and is adapted to adjust, according to the subset of data values, a signal level that corresponds to a data signal transmitted on the signaling path during a second time interval.

Abstract: An example system coupled to a rollator for monitoring usage of the rollator, includes a grip assembly and/or a hip sensing assembly. The grip assembly includes a first sensor configured to detect a force applied to the first sensor. The hip sensing assembly includes a second sensor configured to measure a distance between the second sensor and a hip of the user positioned with respect to the rollator. A microcontroller is electronically coupled in signal communication with the first sensor, the second sensor, and a feedback circuitry. When the force applied to the first sensor exceeds a first threshold, the microcontroller activates the feedback circuitry to generate a first response indicating that the first threshold has been exceeded. When the distance exceeds a second threshold, the microcontroller activates the feedback circuitry to generate a second response indicating that the second threshold has been exceeded.

Abstract: The present invention is a transmission/reception method in which a reception device measures propagation path characteristics of a communication propagation path, a transmission device generates, based on a measurement result of the propagation path characteristics, a plurality of pseudo propagation path characteristics having propagation path characteristics similar to the propagation path characteristics so as to have low mutual correlation, the transmission device generates a data group including a plurality of parallel and independent data in the same number as the plurality of pseudo propagation path characteristics in a baseband on a transmitting side, obtains a transmission signal by synthesizing a plurality of superimposed data generated by superimposing the pseudo propagation path characteristics on the data one by one, and transmits a plurality of pseudo propagation path characteristic information relating to the plurality of pseudo propagation path characteristics and the transmission signal, and

Abstract: An object is to enable high-accuracy position estimation of a wireless terminal station by efficiently performing connection between a wireless base station and the wireless terminal station using multiple distributed antennas.

Abstract: A securable delivery container for temporarily securely storing deliveries and limiting access comprising a container having a bottom, a plurality of walls a receiving compartment defined therein, a lid attachment, a lid for accessing the compartment, and a compartment anchor point for securing a deployable external compartment, a temperature controlled compartment, a lock, a deployable external compartment for deliveries with one receiving compartment defined therein, and a lock for the external compartment, whereby a delivery person unlocks the securable delivery container, places a package, inside the container and locks the container unless the package is too large or an odd shape that will not fit in the securable delivery container, then a delivery person deploys the external compartment and places the odd package inside the external compartment and secures the delivery to securable delivery container, closes the lid, and locks the securable delivery container locking the external container.

Abstract: The invention relates to the transmitting of a public data to at least a number K of terminals in a wireless communication system employing a MIMO (Multiple Input Multiple Output) scheme, using a set of N pre-coders (Wi). The method includes, based on the N pre-coder (Wi), determining a set of N??N optimized pre-coders (W?i) and, based on the set of N??N optimized pre-coders (W?i), computing N? optimized resource unit quantities T?(i), the N? optimized pre-coders respectively corresponding to the N? optimized resource units quantities T?(i). The method further includes transmitting N? data Di, each of the N? data being a part of the public data, such that, for i=1 to N?, Di is transmitted on T?(i) resource units which are pre-coded onto NTx antennas using the pre-coder W?i.