368 results about "Radio reception" patented technology

A system and method of targeting spatialized audio to ears of a listener, comprising sensing characteristics of an environment comprising at least one human by receiving radio frequency signals with a radio receiver; using the sensed characteristics in at least one automated processor to analyze at least one human dynamic physiological pattern of each human and estimate a body pose and head position within the environment of each human based on the sensed characteristics and the at least one human dynamic physiological pattern; and using an estimated position of the ears of each human in conjunction with a head-related transfer function in a spatial audio system to generate spatialized audio.

The present disclosure relates to systems and processes for optimizing the detection of a patient's heartbeats, which may be useful in detection of the patient's oxygen saturation, as well as systems and processes for improving and optimizing the PPG signal quality of those patients with highly pigmented skin. In various embodiments, the process may comprise the steps of: receiving, from a radio, red data, infrared (IR) data, and a series of heartbeats associated with a time period; computing a series of peaks of the red data and IR data for the time period; computing a subset of the red data and IR data; estimating an oxygen saturation percentage (SpO2%) for the patient by computing an optical ratio of the red data and IR data included in the subset; and displaying on a computer screen the estimated SpO2% for the patient.

Radio receiver devices and related methods and computer programs are disclosed. A radio signal comprising a pilot signal is received at a radio receiver device over a radio channel. Raw channel estimation of the radio channel is performed based on the received pilot signal, thereby obtaining a raw channel estimate. The raw channel estimate is processed. The processing of the raw channel estimate comprises applying a neural network, NN, to the raw channel estimate. The NN comprises at least one fully connected layer and at least one convolutional layer. The NN is executable to encode the raw channel estimate by mapping the raw channel estimate into an alternate domain, thereby obtaining an encoded channel estimate. The NN is further executable to decode the encoded channel estimate by mapping the encoded channel estimate to a frequency-interpolated channel estimate.

In aspects of environment dead zone determination based on UWB ranging, a system includes ultra-wideband (UWB) radios associated with respective devices in an environment. An automation controller receives UWB ranging data from the UWB radios, and can monitor locations of the respective devices in the environment. The automation controller can detect a loss of coverage by a device connected in the environment, and determine a coverage dead zone within the environment at the location of the loss of coverage by the device based on the UWB ranging data. A computing device can implement the automation controller that receives the UWB ranging data from the UWB radios, and monitors the locations of the respective devices in the environment. The automation controller can detect the loss of coverage by the device, and determine the coverage dead zone within the environment at the location of the loss of coverage by the device.

The invention discloses an unmanned aerial vehicle detection method based on radio frequency spectrum identification and deep learning, and relates to the technical field of unmanned aerial vehicle monitoring, and the method comprises the steps: deploying a radio receiving station to collect radio signals, converting the radio signals into a time-frequency graph, extracting multi-scale signal features, carrying out the global average pooling of the multi-scale signal features, and carrying out the global average pooling of the multi-scale signal features; calculating a scale adjustment coefficient to generate a weighted feature, extracting a time sequence signal feature to generate a fusion feature, constructing a full connection layer to perform multi-task processing on the fusion feature, and outputting an unmanned aerial vehicle detection result; a state space is defined, an action space is defined according to environmental parameters, nonlinear harmonic response characteristics in a current state are measured to construct a nonlinear reward function, a comprehensive reward function is formed in combination with action interference effects, and a final interference strategy is output through reinforcement learning. According to the invention, the scientificity and robustness of the identification and interference strategy are significantly improved, the accuracy of the interference strategy is improved, and the interference effect of the unmanned aerial vehicle is effectively improved.

The invention relates to the technical field of artificial intelligence, in particular to an unmanned aerial vehicle remote controller signal source interference control system based on artificial intelligence. The system comprises a signal acquisition unit which captures a radio signal sent by an unmanned aerial vehicle remote controller through a radio receiving module; the signal processing unit is used for carrying out data processing on the radio signals through a feature extraction algorithm according to the radio signals captured by the signal acquisition unit; the identification and classification unit classifies the radio signals through an identification and classification model according to the radio signals processed by the signal processing unit; and the interference control unit is used for designing an interference control decision rule according to the classification result of the identification and classification unit. Through the identification and classification model, the processed radio signals can be accurately classified, and normal control signals and potential interference signals are distinguished.

The invention relates to the technical field of meteorological monitoring and lightning protection, and discloses a radio signal-based lightning protection detection method for a meteorological station, which comprises the following steps of: receiving electromagnetic wave signals generated by lightning discharge in real time through radio receiving equipment of a plurality of meteorological stations, and acquiring characteristic data of time, frequency and intensity of the signals; an effective light velocity model is adopted to correct the influence of the propagation velocity of the lightning signal in the atmosphere, and the effective propagation velocity of the lightning signal is calculated by considering the ionospheric and atmospheric refraction effects; the position of the lightning power supply is estimated by measuring the arrival time difference and the time difference of lightning signals received by different sites and utilizing the geometric positions of the multiple sites. The positioning precision of the lightning power supply is greatly improved by adopting the cooperative work of the radio receiving equipment of a plurality of meteorological stations and combining the technologies of accurate lightning signal propagation speed correction, time synchronization error correction, geometric precision optimization and the like.

This application relates to wireless communications, including methods and apparatus to monitor radio link conditions of a cellular wireless network adaptively using a low-power wake-up signal (LP-WUS) burst received by a low-power wake-up radio (LP-WUR) of a wireless device when possible and switching to using legacy reference signals received by a main radio only when required. The LP-WUS burst is processed by the LP-WUR to determine a block error rate (BLER) value and / or a signal-to-noise-plus-interference ratio (SINR) value to determine whether the wireless device is in an out-of-sync (OOS) condition. The main radio can be awakened, including when directed to sleep by the cellular wireless network, to perform radio link monitoring when the OOS condition is determined.

Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) may receive, via a first radio, a first signal that indicates one or more resource occasions for transmission of a wake-up signal (WUS). Based on receiving the first signal, the UE may transmit, via a second radio for the UE and via the indicated resource occasions, the WUS, where the WUS indicates for the network entity to operate according to a first mode of operation associated with higher power consumption relative to a second mode of operation. In such examples, the first radio of the UE may be associated with lower power consumption relative to the second radio of the UE. Based on transmitting the WUS, the UE may monitor, via the second radio, for control signaling and communicate with the network entity.

The invention relates to the technical field of data intelligent testing and traceability, and provides a civil aviation radio parameter intelligent testing and traceability method and system, and the method comprises the steps: obtaining target spectrum feature data obtained by scanning a target frequency band through a phased-array antenna array in a dynamic spectrum interference environment, and adjusting the phased-array antenna array; and converting a civil aviation radio receiving signal in the target spectrum data after anti-interference optimization into time-frequency domain data, generating a signal spectrum, generating a modulation parameter characteristic and a frequency deviation parameter characteristic, and generating a civil aviation radio parameter traceability result containing an equipment identity identifier and a parameter deviation value. According to the invention, through optimization adjustment and signal feature analysis of the phased-array antenna in a dynamic spectrum interference environment, the problem of unstable anti-interference effect in the prior art is solved; the intelligent level and the practicability of the whole system are not high, and intelligent testing and accurate traceability of civil aviation radio parameters are achieved.

Methods, systems, and devices for wireless communication are described. A wireless device may receive first configuration information that defines a first schedule of occasions for reception of a low power wakeup signal via a first radio of the wireless device associated with low power operation. The wireless device may receive second configuration information that defines a periodic connected-mode discontinuous reception (C-DRX) cycle that includes a second schedule of periodic ON durations to monitor a physical downlink control channel (PDCCH) via a second radio of the wireless device, and receive the low power wakeup signal via the first radio of the wireless device in accordance with the first configuration information and in advance of, by at least a threshold amount, a start of a next ON duration or a next PDCCH message.

The invention relates to wireless communication. Comprising methods and apparatus for adaptively monitoring radio link conditions of a cellular wireless network using a low power wake-up signal (LP-WUS) burst received by a low power wake-up radio (LP-WUR) of a wireless device if possible and switching to using legacy reference signals received by a primary radio only when needed. The LP-WUS burst is processed by the LP-WUR to determine a block error rate (BLER) value and / or a signal to interference plus noise ratio (SINR) value to determine whether the wireless device is in an out-of-sync (OOS) condition. When the OOS condition is determined, the primary radio may be awakened to perform radio link monitoring, including steering into sleep by the cellular wireless network.

In aspects of audio level adjustment based on UWB, a wireless device includes an ultra-wideband (UWB) radio to communicate with UWB radios respectively associated with speakers emitting audio. The UWB radio can receive UWB ranging data from the UWB radios associated with the speakers. An audio controller can utilize the UWB ranging data to monitor locations of the wireless device relative to the speakers and determine a location change of the wireless device relative to the speakers. The audio controller can communicate audio adjustment instructions based on the locations of the wireless device relative to the speakers or relative to the location change of the wireless device. The audio adjustment instructions can initiate an adjustment of a sound level of the audio emitted from at least one of the speakers and / or initiate a delay in the audio emitted from at least one of the speakers.

Physical random access channel (PRACH) radio receiver devices and related methods and computer programs are disclosed. An uplink (UL) synchronization signal is received at a radio receiver device. The UL synchronization signal comprises a PRACH preamble. The PRACH preamble comprises a preamble sequence set. The radio receiver device extracts the preamble sequence set. The radio receiver device applies a neural network (NN) to the extracted preamble sequence set to determine a physical root sequence index, an associated cyclic shift value, and / or a timing offset value, for at least one preamble sequence instance in the extracted preamble sequence set. The radio receiver device further applies the NN to output at least one of the determined physical root sequence index, the associated cyclic shift value, and / or the timing offset value, for the at least one preamble sequence instance in the extracted preamble sequence set.

An imaging system (MIS), optionally a medical imaging system, with wireless communication capability and related method. The imaging system comprises a gantry (RG) rotatable around a rotation axis. The gantry includes a detector device (D) capable of recording, in plural spatial positions, measurement data in relation to a subject (such as a patient) (PAT) to be imaged. The system also includes a radio transmitter (TX) for generating a directed radio beam propagatable along a propagation axis to transmit the measurement data to a radio receiver (RX). The radio transmitter (TX) is arranged at the rotatable gantry and is operable so that the propagation direction intersects the rotation axis in a location that is situated away from the rotatable gantry.

The invention provides a prospecting system and method based on software defined radio, and belongs to the technical field of mineral detection, and the system comprises a software defined radio transmitting device which is used for generating transmitting parameters based on the geological structure and detection requirements of a to-be-detected area, an electromagnetic wave emission signal emitted to the to-be-detected area is generated based on the emission parameter; the software-defined radio receiving equipment is used for receiving electromagnetic wave receiving signals propagated in the to-be-detected area; and the mineral analysis module is used for determining a distortion mode based on the electromagnetic wave transmitting signal and the electromagnetic wave receiving signal, and determining the type and grade of minerals based on the distortion mode. According to the invention, the high flexibility of the software defined radio technology is utilized, rapid adjustment of emission parameters is realized to adapt to different geological structures and detection requirements, and the prospecting efficiency of the system is improved. Meanwhile, mineral detection is achieved based on the distortion mode, manual work is not needed, and the mineral detection accuracy is improved.

A gaming machine having an audio channel outputting game sound and an audio channel intaking microphone sound and outputting chat sound is coupled with a headset having earpieces and a microphone and a Bluetooth transceiver in the headset for sending and receiving the microphone and chat sounds. A radio receiver or wired connection in the headset receives the game sounds. Circuitry in the headset is connected between the transceiver and receiver for mixing the microphone, chat, and game sounds and feeding them all to the earpieces.

Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) may receive, via a first radio, control signaling that indicates a configuration associated with a wake-up signal (WUS) and that also indicates an association between the WUS and a semi-persistent scheduling (SPS) occasion. As such, the UE may monitor, via a second radio, for the WUS in accordance with the control signaling, where the WUS may indicate whether the SPS occasion includes a physical downlink shared channel (PDSCH) transmission. For example, if the WUS indicates that the SPS occasion includes the PDSCH transmission, the UE may perform a first procedure pertaining to monitoring, via the first radio, the SPS occasion. Alternatively, if the WUS indicates that the SPS occasion is empty, the UE may perform a second procedure pertaining to maintaining the first radio in a sleep mode.

Disclosed herein, among other things, are systems and methods for mitigating interference within a telecoil signal for hearing devices. A system includes a first hearing device and a second hearing device. The first hearing device includes a magnetic sensor configured to sense an inductive signal, a first wireless radio configured for wireless communication, and a first near-field radio configured for near-field communication. The second hearing device includes a second wireless radio configured for wireless communication and a second near-field radio configured for near-field communication. The first hearing device is configured to selectively deactivate the first wireless radio when using the magnetic sensor to reduce interference in the sensed inductive signal, and further configured to transmit the sensed inductive signal to the second hearing device using the first near-field radio. The second hearing device is configured to receive the sensed inductive signal using the second near-field radio.

A Flight Control System for an aerial vehicle, the system comprising an autopilot for autonomously controlling the flight of the aerial vehicle; a GNSS receiver for receiving GNSS signals that can be used by the Flight Control System to calculate the current location of the aerial vehicle; and one or more radio receivers for receiving radio signals that can be used by the Flight Control System to calculate the current location of the aerial vehicle. The Flight Control System has a primary mode of operation in which a location of the aerial vehicle is calculated using the received GNSS signals, and provided to the autopilot for controlling the flight of the aerial vehicle and a secondary mode of operation in which a location of the aerial vehicle is calculated using the received radio signals, and provided to the autopilot for controlling the flight of the aerial vehicle.

Approaches for idle mode operations for wireless transmit / receive units (WTRUs) with zero-energy (ZE) receivers are disclosed herein. A WTRU operating in idle mode, may receive using the main transceiver over a Uu interface, an energy harvesting (EH) configuration for use over a ZE air interface. The main transceiver may be turned off, and the ZE receiver as part of a ZE idle mode operation, may detect, over the ZE air interface, and harvest energy from ZE reference signals. The WTRU may calculate an amount of energy harvested from the ZE reference signals over a first time period. The WTRU may calculate a ZE idle mode operation energy consumption over the first time period. On a condition that the ZE idle mode operation energy consumption is greater than the harvested energy, the main transceiver may be turned on and the WTRU may enter a Uu interface idle mode operation.

To provide an object detector and a method for detecting an object that can determine the boarding state of a passenger in a vehicle without attaching a dedicated device, and a method for detecting an object.SOLUTION: The object detector includes: a radio wave sending unit having a plurality of sending antennas arranged in one place of a closed space and emitting a sending wave by each sending antenna; a radio wave receiving unit having a plurality of receiving antennas arranged in another place of the closed space and receiving the sending wave by each receiving antenna; a radio wave intensity information acquisition unit for acquiring radio wave intensity information showing the radio wave intensity of the sending wave emitted from each sending antenna at each receiving antenna; and a detection unit for detecting an object in the closed space on the basis of the radio wave intensity shown by the radio wave intensity information and a predetermined reference intensity.SELECTED DRAWING: Figure 2

The invention discloses a software-defined aviation data link ADS-B message receiving and sending method based on a software radio platform, wherein the platform includes a GNSS positioning module, a pressure altitude module, an aircraft flight control data module, a sending data processing module Raspberry Pi, a software radio sending module HackRF ONE, a sending antenna, a receiving antenna, a software radio receiving module HackRF ONE and a receiving data processing module Raspberry Pi; the method comprises: based on the platform, according to the electromagnetic spectrum situation of the monitored airspace, a software-defined aviation data link is selected to monitor the flight status of the aircraft, and data complementation and distributed base station data completion are performed at the same time, so as to realize unified continuous ADS-B message receiving and sending and monitoring of all aircraft in the airspace. The flight safety of unmanned aerial vehicles in low-altitude airspace near the ground is guaranteed, and the unmanned aerial vehicle air traffic control agency is convenient for real-time monitoring of the flight process of the unmanned aerial vehicle.

The invention relates to a polarising cell (C) configured to receive radiation incident on a first side of the cell, and to produce, from the incident radiation, on a second side of the cell opposite the first side, re-emission radiation that exhibits circular polarisation. The cell comprises a switching element (15) configured to produce, in a controlled manner, a first active phase shift of the incident radiation. Such a cell can be used in a reconfigurable transmitting network, in particular as a component of a radio transmitting antenna or of a radio receiving antenna. A beam-forming and beam-scanning function can be achieved by controlling the active phase shift in each cell of the transmitting array.

A wireless device (S) includes a radio (R) for communicating via a wireless communication protocol which employs messages constructed as layer 2 MAC frames each including a layer 2 MAC header and a payload. The wireless device is configured to operate in (i) a first mode in which the wireless device transmits messages (N0, . . . , Nn) via the radio each including an IPv6 packet header and an upper layer protocol data unit encapsulated within the payload of a layer 2 MAC frame, and (ii) a second mode in which the wireless device transmits messages (M0, . . . , Mn) via the radio each including an upper layer protocol data unit encapsulated within the payload of a layer 2 MAC frame without including the IPv6 header. A relay device (T) comprises a radio for communicating via the wireless communication protocol which employs messages constructed as layer 2 MAC frames each including a layer 2 MAC header and a payload. In one power-saving aspect, the relay device is configured to perform a header insertion service (I) in which the relay device receives messages (M0, . . . , Mn) via its radio from the wireless device (S), each including an upper layer protocol data unit encapsulated within the payload of a layer 2 MAC frame without including the IPv6 header. The header insertion service inserts header information (A′) into the messages (M0, . . . , Mn) received from the wireless device (S) and retransmits the messages with complete headers as messages (M0′, . . . , Mn′). In another power-saving aspect, the relay device additionally or alternatively applies an acknowledgement detection criterion to filter out acknowledgements received from the server, and forwards the filtered out acknowledgements to the wireless device (S) via the radio at a reduced rate.

A method of operating a radio receiver, the radio receiver being arranged to receive a plurality of data symbols transmitted at one of a set of predetermined frequencies. The method comprises receiving (204) a first set of data symbols at a first transmission frequency. The first set of data symbols comprises a message indicating a first subset of frequencies. A synthesizer is calibrated (208) for the one or more frequencies in the first subset of frequencies. A second set of data symbols is received (210) for transmission at at least one of the one or more frequencies from the first subset of frequencies. A determination is made based on the second set of data symbols whether a network quality metric exceeds a threshold (212). When the network quality metric exceeds the threshold, the synthesizer is calibrated (214) for one or more frequencies in a second subset of frequencies. The second subset comprises frequencies not in the first subset.

The invention relates to an optically transparent sheet (2) for regionally delimiting a space (1). The sheet (2) has a shaped carrier material (7) which has an inner coating (8) facing the space (1) and an outer coating facing away from the space (1). The inner coating (8) and the outer coating (9) each consist at least partially of an electrically conductive material such that they can function as an antenna against electromagnetic radiation (5, 6). The sheet bar (2) also has an electrically conductive connection (11, 13) which connects the inner coating (8) to the outer coating (9) in an electrically conductive manner. The invention also relates to a motor vehicle (3) having such a sheet (2).

The utility model relates to a power supply system for being synchronously opened or closed with an electric appliance. The power supply system comprises a power supply circuit; the relay is arranged on the power supply circuit; the control module is electrically connected with the relay; the power supply module is electrically connected with the control module; the wireless trigger circuit comprises a data coding unit, a trigger switch and a radio transmission unit which are connected in series; the radio receiving unit is used for receiving the radio signal transmitted by the radio transmitting unit; the trigger switch is a flexible switch, is adhered to the electric appliance switch and is used for synchronously acting with the electric appliance switch, and the control module controls the on-off of the relay based on a radio signal received by the radio receiving unit. According to the application, the flexible trigger switch is adhered to the electric appliance switch, and the trigger switch is utilized to control the on-off of the wireless trigger circuit so as to transmit the corresponding electric signal, so that the control module controls the on-off of the relay based on the electric signal so as to achieve the purpose of controlling the on-off of the power supply circuit, thereby realizing the synchronous power-on or power-off of the power supply circuit and the electric appliance.

A system and a method are disclosed for low-power wake up signaling and reception for main radio wake-up and power saving. The system and method may relate to sending, by a user equipment (UE), UE capability information corresponding to a capability of a low-power wake-up receiver (LP-WUR) radio to receive orthogonal frequency division multiplexing (OFDM) signals; receiving, by the UE, a low-power wake up signal (LP-WUS), the LP-WUS comprising first data in an on-off keying format and second data in an overlaid OFDM format, wherein the LP-WUS is based at least in part on the UE capability information; and activating, by the UE, based on the received LP-WUS, a main radio for receiving wireless communications.

A method of operating a radio receiver device, the method comprising: receiving a radio signal comprising an encrypted advertising packet 302, said advertising packet comprising a header portion and a