114 results about "Radio receiver" patented technology

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.

Systems, methods, and apparatuses for multiple main radio receiver (MR) ramp-up times for low power wake-up signal (LP-WUS) monitoring by a wireless transmit / receive unit (WTRU) are provided. The WTRU determines and / or the WTRU receives configuration information indicative of a plurality of MR ramp-up times. The plurality of MR ramp-up times are based on a continuous time duration for which the WTRU monitors for the LP-WUS. The WTRU determines one or more physical downlink control channel (PDCCH) monitoring resources as a function of one or more MR ramp-up times of the plurality of MR ramp-up times. The WTRU determines whether to monitor the PDCCH outside a discontinuous reception (DRX) on duration timer and / or during the DRX on duration timer based on one or more conditions. The plurality of MR ramp-up times reduce latency caused by MR sleep states, increase efficiency of scheduling data transmission and / or reception, and reduce WTRU power consumption.

A radio receiver device is provided. The radio receiver device is configured to receive a radio signal comprising a data packet with a packet duration, said data packet comprising a first portion and a second portion; to determine an initial estimate of the packet duration using data included in the first portion; to determine a correction factor for said initial estimate of the packet duration using data included in the second portion; and to combine the initial estimate and the correction factor to determine a refined estimate of the packet duration.

The invention relates to a low power wireless network system. A low power wireless network system, a wireless network node, a wireless network hub, and a method for transmitting data frames on a low power wireless network system are provided. An example wireless network system includes an access point and a plurality of wireless nodes, the wireless nodes including a destination wireless node and a wireless hub. The access point is configured to transmit data frames to a plurality of wireless nodes according to a wireless network protocol. The destination wireless node includes a primary connection radio module configured to generate a communication signal according to a wireless network protocol and a wake-up radio receiver configured to receive a low-power wake-up signal. The wireless hub is configured to transmit a low power wake-up signal to the destination wireless node if the beacon frame from the access point indicates that the buffered data frame is intended for the destination wireless node.

Method for representing environmental structures in an occupancy grid (1) for a driver assistance system (A1,A2,AN), wherein the environmental information is provided by at least one of the following devices - Environmental sensor, in particular camera, radar or lidar sensor - Navigation device - Radio receiver (c2x), characterized in that a value for a criticality (K) of the environmental structure is stored in the occupancy grid (1) and a function of a driver assistance system (A1,A2,AN) is controlled based on a hazard risk, wherein the criticality (K) is a measure of the negative consequences of driving over these environmental structures, wherein the criticality is based on the damage to be expected when driving over the area and is adapted to known tables for classifying injury severity.

A radio receiver includes a radio frequency (RF) receiver circuit to receive a radio broadcast signal, an internet network interface, a display, a memory, a processing circuit, and a client application including instructions for execution by the processing circuit. The client application is configured to determine geographic location information for the radio receiver, determine a radio broadcast available to the radio receiver using the geographic location information, select metadata associated with the radio broadcast available to the radio receiver from metadata stored in the memory, and present information included in the selected metadata using the display in accordance with the received radio broadcast signal.

System for a real-time radio receiver network, wherein the system comprises: a remote digital antenna digital receiver (“RDADR”) with a processor; a first remote digital antenna (“RDA”) comprising a processor, at least one receiver and at least one antenna; a second RDA with a processor, at least one receiver and at least one antenna, an audio source that is coupled to the transmitter; and an audio output device coupled with the RDADR, where the RDADR, the first RDA and the second RDA are coupled to each other via a digital bus, wherein the first RDA and the second RDA attempt to receive one or more digital signals from a transmitter, and if the one or more digital signals are received without error by the first RDA or the second RDA, the RDA that has received the one or more error-free digital signals transmits the one or more error-free digital signals via the digital bus to the RDADR, where the audio source generates one or more digital signals, and where the audio source is at least a microphone or a musical instrument.

A radio receiver (20) for determining the position of a sonar buoy (22) is disclosed, comprising a receiving unit (24) and a data processing unit (26). The receiving unit (24) is configured to continuously, and in particular continuously, receive a sequence of radio signals (28) from the sonar buoy (22) from the moment it is deployed. The data processing unit (26) is configured to determine the received level of the radio signals (28) in the sequence of radio signals and, based on a plurality of received levels of different radio signals (28) in the sequence of radio signals, to determine the position of the sonar buoy (22) absolutely or relative to the radio receiver (20).

The invention discloses a ground-air control multi-channel received voice dynamic alignment method, which comprises the following steps of: 1, establishing SIP (Session Initiation Protocol) connection between a radio station gateway in an interphone system and an external radio station receiver, maintaining bidirectional RTP (Real-time Transport Protocol) keep-alive packet receiving and transmitting in a certain period, and receiving RTP effective voice packets in a certain period; 2, the radio station gateway adds an extension field in an RTP packet every fixed exploration time, and sends an RMM measurement request message to an external radio station receiver; 3, after receiving the RMM measurement request message, the external radio station adds an extension field in the RTP packet and replies an MAM measurement answer message; 4, different modes are selected to calculate receiving channel delays, normalization is carried out according to RTP receiving precision, the channel with the maximum delay is selected as a reference channel, and normalization values needing to be increased by other channels are calculated; and step 5, the radio gateway updates the alignment value of each channel, and after the alignment of the received voice of each channel is achieved, the received voice is sent to a voice server.

The present invention discloses a heterogeneous collaborative intelligent pesticide applicator structure for cash crops in hilly areas and a path tracking method thereof. It belongs to the field of agricultural machinery technology. It comprises a pesticide applicator body 1, a lifting frame 2 fixed at the front end of the pesticide applicator, a foldable pesticide applicator rod 4 fixed on the lifting frame, a medicine box bracket 9 fixed at the rear end of the pesticide applicator, and a medicine box 8 fixed on the bracket. The pesticide applicator body adopts a crawler-type double-layer platform design, including a crawler-type mobile chassis 11, a double-layer bracket 12, and a central controller and drive circuit control board 6, a water pump 7, a data acquisition and communication module 3, a drone 5 and a drone wireless charging platform 10 are fixed on the bracket; the data acquisition and communication module includes a laser radar 32, a visual sensor 31, a Beidou satellite antenna 33 and a radio receiver 34. The present invention designs corresponding structures and path tracking methods for pesticide application operations in hilly areas, and ultimately realizes precise pesticide application and path tracking of heterogeneous collaborative intelligent pesticide applicators.

A method of detecting noise in an audio signal of a radio receiver includes transforming a time-domain audio signal into frequency-domain blocks, and using a stored noise profile corresponding to a component of the radio receiver, generating in the radio receiver at least a first metric based on the frequency-domain blocks. In addition, the method includes, in the radio receiver, based on the first metric, detecting a presence of noise intruding into an active channel from another channel.

Aspects of this disclosure relate to frequency offset compensation in a radio receiver. In embodiments of the disclosure, a frequency domain orthogonal frequency-division multiplexing signal can be received, and a phase error offset in individual frequency segments of the frequency domain orthogonal frequency-division multiplexing signal can be compensated for based on estimates of the phase error offset for the individual frequency segments. Related radio receivers and radio systems are disclosed.

System for detecting traffic light phases for autonomous and semi-autonomous vehicles, comprising a radio transmitter arranged on a traffic light system, which emits a fixed radio frequency in the MHz range for each signal phase, and a radio receiver integrated in the vehicle, which is configured to selectively detect the emitted frequencies and to determine the current signal phase of the traffic light system from them.

Radio receiver for a radio transmission system (100, 110, 120, 130), wherein a message (101) either (a) is sent as a whole data packet (102) in the radio transmission system (100) without forward error correction, or (b) is sent in the radio transmission system (110) as a data packet (103) divided into sub-data packets (103_1-103_n), wherein the sub-data packets (103_1-103_n) are sent sequentially and are individually decodable or (c) is sent in the radio transmission system (120) as a data packet (104) divided into partial data packets (104_1, 104_n), wherein the partial data packets (104_1, 104_n) are sent one after the other, or (d) is transmitted in the radio transmission system (130) as a data packet (106) using a chirp spreading spectrum, wherein the radio receiver has the following features: an independent power supply in the form of a battery (204, 304) or a photovoltaic arrangement (305), and a first antenna (201, 301) for receiving radio signals from a radio transmitter of the radio transmission system (100) and a second antenna (202, 302) for receiving the radio signals from the radio transmitter of the radio transmission system (100), wherein the first (201, 301) and second antenna (202, 302) are provided for receiving a uniform type of radio signal, wherein the radio receiver adjusts its reception range to the first antenna (201, 301) or second antenna (202, 302) depending on the reception of the radio signals from the radio transmitter.

The mixer-first topology of receivers do not include low-noise amplifiers (LNA) preceding the mixer. The Mixer-First topology of radio receivers utilizes a direct-conversion quadrature mixer to down convert an RF signal to baseband, where a Hilbert Transform filter is used for sideband selection. When a switching mixer is used, the mixer-first receiver is capable of extremely high dynamic range and linearity. The downfall of the mixer-first topology is poor out-of-band signal rejection. A mixer-first receiver is described which achieves third-harmonic rejection without bandpass filtering proceeding the mixer.

The invention relates to an OFDM (Orthogonal Frequency Division Multiplexing) vector signal analysis device and method, belongs to the technical field of communication, and solves the problems of high test cost and low flexibility of an EVM (Error Vector Magnitude Error) of an OFDM system in the prior art. The method comprises the following specific steps: a signal generation module used for generating first baseband data of an OFDM signal; the software radio transmitter is used for caching the first baseband data, modulating the first baseband data into a corresponding radio frequency signal and transmitting the radio frequency signal to a tested system; the software radio receiver is used for collecting the radio frequency signal forwarded and output by the tested system, demodulating the radio frequency signal to obtain second baseband data of the OFDM signal, and sending the second baseband data to the data processing module; and the data processing module is used for processing the second baseband data based on the first baseband data to obtain a vector amplitude error of an output signal of the tested system, so that low-cost and high-flexibility EVM test is realized.

Method for operating an energy-autonomous radio receiver (105) of a preferably stationary gateway (100), wherein the radio receiver (105) receives telegrams (204, 205, 206, 209) in the form of bursts from at least one radio node (200), preferably a number X of radio nodes (200) of a network (214), and the radio receiver (105) opens receive windows (207, 207a, 208, 208a) for reception, wherein the radio receiver (105) is supplied with electrical energy for energy-autonomous operation by a battery (109), preferably a long-life battery, and / or by a photovoltaic cell arrangement (111), wherein the radio receiver (105) is a radio receiver of the SDR type comprising at least one microcontroller (105), in whose receive operation the radio signals received by the radio receiver (105) are converted into I / Q data (113) converted and the I / Q data 113 further processed using computation time-consuming algorithms,wherein, despite the reception of incoming bursts or radio signals by the radio receiver (105), computational operations of the microcontroller (105) are aborted or at least reduced in scope in the presence of predefined reception scenarios.

A system for localizing and object is disclosed herein. The system includes a radio transmitter disposed in a first location, a radio receiver disposed in a second location, a processor operatively coupled to the radio transmitter and to the radio receiver, and a memory operatively coupled to the processor. The memory includes instructions stored thereon that, when executed by the processor, cause the processor to send a first command to the radio transmitter to transmit a continuous radio wave, send a second command to the radio receiver to receive a reflected radio wave, receive from the radio receiver a signal indicating the reflected radio wave is within a spatial region of interest, and determining a three-dimensional location of the object within the spatial region of interest based on the reflected radio wave.

The application discloses a kind of external radiation source radar signal acquisition processing systems, belong to radar signal processing technical field, with strong universality, and acquisition processing efficiency is high.System includes: the multi-channel software radio receiver and workstation connected with each other;Wherein, the workstation includes positioning mode selection module, the workstation sends the positioning mode of external radiation source radar signal acquisition processing to the multi-channel software radio receiver by the positioning mode selection module;The multi-channel software radio receiver is used to receive the positioning mode, according to the positioning mode to external radiation source radar signal acquisition, obtains the multi-channel signal data corresponding to the positioning mode;The workstation is used to receive the multi-channel signal data sent by the multi-channel software radio receiver, processes the multi-channel signal data, obtains the detection positioning result of external radiation source radar signal.

The application provides a monitoring method and system of a collection device, and relates to the field of monitoring of a collection device, and comprises the following steps: acquiring a list of to-be-repaired devices of each target sub-region contained in a target region; acquiring an input data list every interval of a preset time length; obtaining a predicted working state of the target region and each target sub-region in a second time window according to the input data list and a state prediction model; if the predicted working state of the target region and any target sub-region is an idle state, acquiring a repair priority of each to-be-repaired device in the list of to-be-repaired devices of the target sub-region; and repairing the to-be-repaired devices in the list of to-be-repaired devices of the target sub-region in descending order of the repair priority of the to-be-repaired devices. The application improves the rationality and standardization of the overall repair work, reduces the potential risks caused by device failures and repair operations in the region, and achieves a balance between regional management and device repair.

For synchronizing wirelessly connected audio playback devices with high precision, a first audio device (310, 410), e.g. a soundbar, has a first and a second radio transmitter (414, 415). A plurality of second audio devices (320, 420-422), e.g. loudspeaker boxes, each have a first and a second radio receiver (4204, 4205). The first radio transmitter (414) transmits, over a network with high temporal precision, a first data stream (3301) that comprises synchronization packets (811-816). The second radio transmitter (415) transmits, over a different network with high bandwidth, a second data stream (3311) comprising audio data packets (821-826). The first audio device (310, 410) plays back first audio data. Each of the second audio devices (320, 420-422) receives the first and second data streams (3301, 3311) and plays back the received audio data based on synchronization information in the synchronization packets, thus achieving temporal synchronization with the first audio device.

A method is disclosed comprising receiving, at a hybrid radio receiver configured to recover audio content from a broadcast radio signal and from a wireless network connection separately, a reception metric indicative of an audio quality of the audio content in the broadcast radio signal at any given time. The method further comprises deriving, from fluctuations in the reception metric over time, a fluctuation indicator indicative of fluctuations in the audio quality likely to be noticed by a listener. The method further comprises deriving, based on a previous switching decision and the fluctuation indicator, a switching decision to use the broadcast radio signal or the wireless network connection as a source of the audio content to introduce a hysteresis into the switching decision, and selecting, based on the switching decision, the broadcast radio signal or the wireless network connection as the source of the audio content.

A wireless device is configured to correlate signal data with stored synchronization data to generate synchronization-related data. The signal data represents a received radio frequency signal that encodes a data frame having a synchronization preamble containing multiple instances of a predetermined synchronization sequence. The stored synchronization data represents the predetermined synchronization sequence. The synchronization-related data is generated by correlating signal data representing the synchronization preamble with the stored synchronization data. While generating the synchronization-related data, the wireless device identifies one or more peaks in the synchronization-related data and determines first synchronization information from the first set of one or more peaks. After generating more of the synchronization-related data, the wireless device identifies one or more peaks in the synchronization-related data and determines second synchronization information from the second set of one or more peaks.

An apparatus having at least one processor which is configured to: perform an operation using energy provided by an external reading device, wherein, when performing the operation, an input voltage of a near-field radio receiver is regulated to a predefined first input voltage value; and, after the operation has been completed, while the near-field radio receiver is still in the electromagnetic field generated by the external reading device, regulate the input voltage of the near-field radio receiver to a second input voltage value lower than the first input voltage value.

The invention relates to the technical field of earth surface deformation monitoring, in particular to an earth surface deformation altitude difference evolution measurement system based on multi-source data, which comprises a signal acquisition module used for acquiring radio signals of a target area, including direct path signals and reflection signals; the reflected signal identification module is used for establishing a signal reflection model based on the gain coefficient and the time delay parameter of the reflected signal; and the signal interference calculation module is used for calculating a signal interference index for evaluating the interference degree of the reflected signal on the received signal based on the signal reflection model. According to the method, a multi-channel radio receiver is arranged, a three-dimensional terrain model is combined, and a signal propagation model containing a direct signal and a reflection path is established. According to the technology, the geometrical characteristics and signal attenuation laws of different reflection paths can be accurately identified, and a theoretical basis is provided for subsequent interference elimination. The interpretability of a signal propagation path in a complex terrain is remarkably improved, and conditions are created for accurately quantifying multipath interference.

Devices, methods and computer programs for reducing complexity of a machine learning (ML) model-based radio receiver are disclosed. At least some example embodiments may allow, for example, reducing the number of computation operations, the size of data buffers, and / or the amount of data transferred for inference processing.

A system comprises a motor-driven cutting device that can be hand-held and a control unit. The cutting device can be operated via the control unit that can be remote from the cutting device. The cutting device has at least one radio receiver and the control unit has at least one radio transmitter. A safety-relevant distance between the cutting device and the control unit can be measured via a radio connection and the cutting device only be operated if the safety-relevant distance is less than a predetermined first distance value and exceeds a predetermined second distance value.

According to an aspect, there is provided a tunable radio frequency filter (209) for preselection in a multiband radio receiver or transceiver with a low-noise amplifier with a single-ended input. The tunable radio frequency filter comprises a first capacitor (C1, 1001) having a first terminal for connecting to at least one antenna of the multiband radio receiver or transceiver and a second terminal; and a series resonant circuit, connected between the second terminal of the first capacitor and the ground. The series resonant circuit comprises a first inductor (L1 1003) and a tunable capacitor (Ct, 1004) connected in series with first inductor and having a plurality of tuning values corresponding to operating frequency bands of the multiband radio receiver or transceiver. The tunable capacitor is implemented in an integrated circuit. The series resonant circuit is configured to be resonant at a plurality of first subharmonics of frequencies of the operating frequency bands. Optionally the filter comprises a second capacitor (C2, 1002) and a second inductor (L2, 1010) in series between the resonant circuit to ground and the input of the LNA. The second inductor adds to impedance matching and low pass filtering above the operating frequency bands.

A method, apparatus, and system for providing demand-based enhanced signal processing in a radio signal receiver include receiving, at the radio receiver, at least one radio signal from at least one transmitter, monitoring the received at least one radio signal to determine if enhanced signal processing is needed, if it is determined that enhanced signal processing is not needed, processing the received at least one radio signal using conventional radio signal processing techniques, if it is determined that enhanced signal processing is needed, performing at least a motion compensated correlation using at least one of the at least one received radio signals to generate motion compensated correlation results, and determining a position for the radio receiver using the motion compensated correlation results. In some instances, the motion compensated correlation technique includes a SUPERCORRELATION™ technique.

The present application relates to the technical field of ground deformation monitoring, and particularly relates to a ground deformation height difference evolution measurement system based on multi-source data, comprising: a signal acquisition module, used for acquiring radio signals of a target area, including direct path signals and reflected signals; a reflected signal identification module, used for establishing a signal reflection model based on gain coefficients and time delay parameters of the reflected signals; and a signal interference calculation module, used for calculating a signal interference index for evaluating the interference degree of the reflected signals on the received signals based on the signal reflection model.The present application establishes a signal propagation model containing direct signals and reflected paths by laying out multi-channel radio receivers and combining a three-dimensional terrain model.The technology can accurately identify the geometric characteristics and signal attenuation law of different reflected paths, providing a theoretical basis for subsequent interference elimination, and significantly improves the explainability of signal propagation paths under complex terrain, creating conditions for accurately quantifying multipath interference.