78 results about "Receiver Bandwidth" patented technology

Apparatuses, methods, and systems are disclosed for configuring a bandwidth part for UL and DL. One method includes receiving, at a user equipment (“UE”), information for a bandwidth part (“BWP”) including both a downlink (“DL”) configuration and an uplink (“UL”) configuration. The method includes performing: transmission in a first set of symbols of a first slot according to the UL configuration of the BWP, wherein at least one symbol of the first set of symbols of the first slot includes at least a first UL subband and a first DL subband; reception in a second set of symbols of a second slot according to the DL configuration of the BWP, wherein at least one symbol of the second set of symbols of the second slot includes at least a second UL subband and a second DL subband; or a combination thereof.

The invention discloses an unmanned aerial vehicle wireless signal automatic extraction and amplitude comparison direction finding method based on spectrum data, and relates to the technical field of wireless communication and direction finding, an 8-channel uniform circular array receiving system is adopted, a specific frequency band is scanned, after spectrum data is preprocessed, a time-frequency graph is generated based on short-time Fourier transform, a spectrum peak is extracted through an Otsu algorithm, and the spectrum peak is extracted through an amplitude comparison algorithm; after unmanned aerial vehicle signals are recognized and parameters such as power and frequency deviation are calculated in combination with dynamic time warping and a deep learning classifier, a power ratio matrix is constructed, an azimuth angle is calculated according to a uniform circular array directional diagram function and optimized and calibrated, a track is smoothed through Kalman filtering, and the system has adaptive interference suppression and can adjust receiving bandwidth in real time and start a notch filter. According to the method, through full-process technical innovation, the wireless signal extraction precision and direction finding reliability of the unmanned aerial vehicle in a complex environment are remarkably improved, missing detection and false detection are reduced, and the method has good environment adaptability and anti-interference capability.

The invention discloses a communication method and device which can be applied to a receiving end to receive a reference signal from a sending end in a frequency hopping mode. The method comprises: a network device sending a reference signal in a first time unit in a first frequency hopping unit, the first frequency hopping unit comprising the first time unit and a first switching time, the first time unit being used for transmitting the reference signal, and the first time unit and the first switching time not overlapping in a time domain; and the terminal equipment receives the reference signal in the first time unit. According to the method, the terminal equipment receives the reference signal from the network equipment in a frequency hopping mode, waste of reference signal resources can be reduced, the reference signal from the network equipment can be received through frequency hopping for many times, and the receiving bandwidth of the received reference signal is larger.

To provide a method for selective sampling to assess texture of a specimen by using magnetic resonance (MR).SOLUTION: The method according to the invention excites a specimen and refocuses to provide a sample rod within the specimen. An encoding gradient pulse is applied to induce phase wrap, creating a spatial encode for a specific k-value and orientation. A low non-zero magnitude gradient (140) is then applied and acts as a time dependent phase encode to produce a time varying trajectory through 3D k-space of k-value encodes (146) while simultaneously recording multiple sequential samples (138) of the signal at a sequence of k-values proximate the specific k-value. A receiver bandwidth is set to delineate a length of a VOI within the rod during data sampling. The samples are then post processed at the sequence of k values, and recorded within a time span while the non-zero magnitude gradient is applied, to characterize textural features of tissue in the VOI.SELECTED DRAWING: Figure 1

According to various embodiments of the present disclosure, a method performed by a first device includes the steps of: transmitting information of a first system bandwidth including a plurality of first occupied bandwidths or a plurality of first transmission bandwidths to a plurality of second devices; and transmitting a signal to the plurality of second devices on the basis of the first system bandwidth, wherein, on the basis of the first system bandwidth being related to inter-channel frequency hopping (FH), the system bandwidth is configured to be smaller than or equal to a first reception (Rx) bandwidth related to the plurality of second devices.

The invention belongs to the technical field of digital communication, and particularly relates to a multi-phase filtering channelized ultra-wideband signal detection and fusion method and system.The multi-phase filtering channelized ultra-wideband signal detection and fusion method comprises the steps that channelization is conducted, specifically, a receiving bandwidth is evenly divided into K sub-channels, 50% overlapping is adopted between every two adjacent sub-channels, the method comprises the following steps: designing an appropriate prototype filter according to frequency response, determining a multiphase filter coefficient according to the number of sub-channels and the prototype filter, carrying out D-time extraction at the front end of the multiphase filter, enabling the extracted signal to enter the multiphase filter for filtering, and then carrying out fast Fourier inverse transform on K points output each time to obtain output signals of K sub-channels, time domain amplitude detection: acquiring arrival time and pulse width information of the signal in a time domain; according to the method, the problems of missing detection and feature detection errors of multiple time domain overlapped signals in a single channel are solved, and accurate broadband signal parameters are obtained by using the corresponding relationship between the signal frequency domain and the channel passband.

The present application belongs to the field of ambient IoT. Provided are a receiver parameter determination method, and an apparatus, a device, a medium and a program product. The method is executed by an ambient IoT device. The method comprises: determining a receiver parameter used by an ambient IoT device, wherein the receiver parameter comprises a receiver type and / or a receiving bandwidth. In the method, a receiver parameter used by an ambient IoT device is determined, and the receiver parameter comprises a receiver type and / or a receiving bandwidth, such that in different scenarios, receiver parameters corresponding to different scenarios are determined, thereby conforming to the condition of actual requirements and improving the flexibility of use of the ambient IoT device.

There is provided a user apparatus configured to receive bandwidth information from a first base station and a second base station, and select one of a first mode and a second mode as an operation mode by using the bandwidth information, in which the first mode is a mode in which a capability of the user apparatus is limited compared to a capability of a first other user apparatus connecting to the first base station, and the second mode is a mode in which the capability of the user apparatus is not limited compared to a capability of a second other user apparatus connecting to the second base station.

The present invention discloses a detector chip assembly for high-speed optical signal reception, comprising: a detector chip; a TIA; at least two leads connected to the output end of the TIA for connecting to an external circuit; a capacitor located between the detector chip and the TIA; one end of the capacitor being grounded together with the detector chip; the capacitor being connected in parallel with the TIA; and at least two sections of gold wires, a first gold wire connecting the detector chip and the capacitor, and a second gold wire connecting the capacitor and the TIA. The detector chip of the present invention converts the received high-speed modulated optical signal into an electrical signal, and the electrical signal is input to the TIA through an inductor and a capacitor and then input to the external circuit through the leads after being amplified by the TIA. By selecting appropriate inductors and capacitors, the present invention can greatly increase the effective reception bandwidth of the detector chip, thereby realizing the reception of high-speed optical signals by using low-cost and low-bandwidth detector chips.

Methods and apparatuses for downlink and uplink transmissions in full-duplex systems. A method for operating a user equipment (UE) for receiving a physical downlink shared channel (PDSCH) includes receiving: first information for a first modulation and coding scheme (MCS) table associated with a first frequency-domain subband in a reception bandwidth on a cell, second information for a second MCS table associated with a second frequency-domain subband in the reception bandwidth, and third information for a condition. At least one of the first and second frequency-domain subbands is one of a subband full-duplex (SBFD) downlink (DL) subband, an SBFD flexible subband, or an SBFD uplink (UL) subband. The method further includes determining whether the condition is valid for reception in a slot or symbol and receiving the PDSCH in the slot or symbol based on the first MCS table when valid and the second MCS table when not valid.

The invention discloses a self-adaptive carrier frequency point and bandwidth filtering noise reducer and a method thereof. The method comprises the following steps of: dividing the whole receiving bandwidth of a receiver into N segmented frequency spectrums; calculating N noise power thresholds corresponding to the N segmented spectrums, and setting cascaded N noise elimination modules according to the N segmented spectrums and the N noise power thresholds; the method comprises the following steps: inputting carrier data into cascaded N noise elimination modules, filtering an ith segment frequency spectrum through an ith noise elimination module to obtain ith segment frequency spectrum filtering data, calculating the average power of the ith segment frequency spectrum filtering data, comparing the average power with an ith preset noise power threshold value, if noise is judged, subtracting the noise from the original carrier data, and if the noise is not judged, subtracting the original carrier data from the ith preset noise power threshold value; and if the ith section of spectrum data contains signal data, reserving the signal data, and directly outputting the input signal of the ith noise elimination module as the input signal of the (i + 1) th noise elimination module. According to the method, the noise can be effectively reduced in a self-adaptive manner under the condition that the carrier frequency point and the bandwidth are unknown.

A computerized simulation system includes a digital receiver emulator that applies over-sampling and multiplexing to in-phase and quadrature (I-Q) data streams to create a composite I-Q signal stream that represents a signal environment in a bandwidth wider than that of an assumed digital receiver bandwidth, applying a band-limiting filter to reduce the signal bandwidth so as to match the digital receiver bandwidth, and decimating the I-Q signal to match the data rate of the simulated digital receiver. The digital receiver can accurately emulate effects of band-adjacent signals that may be adjacent or overlap with the receiver passband, considering the characteristics of low-pass filters used in real-world receivers. The simulation system may be part of a training system that presents a simulated signal environment to a trainee.

A user equipment (UE) transmits, to a network device, a first uplink (UL) reference signal (RS) on a first component carrier (CC) and a second UL RS on a second CC. The first and second UL RSs are transmitted without using digital pre-distortion (DPD), and the first and second CCs form part of a reception bandwidth of the network device. The UE receives, from the network device, a first indication of whether DPD is enabled or disabled for performing subsequent UL transmissions on the first CC, wherein the first UL RS is used for determination of the first indication. The UE performs subsequent UL transmissions on the first CC with or without using DPD based on whether DPD is indicated as enabled or disabled on the first CC. The UE receives, from the network device, a second indication of whether DPD is enabled or disabled for performing subsequent UL transmissions on the second CC, wherein the second UL RS is used for determination of the second indication. The UE performs subsequent UL transmissions on the second CC with or without using DPD based on whether DPD is indicated as enabled or disabled on the second CC.

A method of sharing a frequency between base stations, which is performed by a specialized base station having at least some specialized coverages inside a general purpose coverage of a general purpose base station, may comprise: receiving information about adjacent base stations including the general base station from a mobile edge core network configured to manage the specialized base station; requesting, by the specialized base station, necessary bandwidth parts from the mobile edge core network; receiving allocation information for the bandwidth parts from the mobile edge core network; and setting the bandwidth parts based on the allocation information, wherein the specialized base station provides a specialized service to a specialized terminal in the specialized coverage according to the set bandwidth parts.

A receiver receives a wireless signal comprising a plurality of fields including a legacy short training field (L-STF), legacy long training field (L-LTF), and legacy signal (L-SIG) field transmitted to a plurality of antenna of the receiver. For each sub-band in a receiver bandwidth and when samples of the L-STF is received, a first angle based autocorrelation is performed to determine a group of sub-bands which maximize a magnitude based on the first autocorrelations for one or more sub-bands. For each sub-band in the receiver bandwidth and when samples of the L-LTF is received, a second angle based autocorrelation is then performed to refine the crude bandwidth pattern estimate. One or more signal fields and one or more data fields of the received signal are decoded based on the refined bandwidth pattern estimate.

The invention discloses a data sending method and device, computer equipment and a storage medium, and relates to the technical field of data transmission, and the method comprises the step of dynamically adjusting the data transmission frequency according to the signal states of two clock domains. And if the receiving bandwidth of the first interface is relatively low, when it is detected that the signal values of the synchronous effective signal and the second effective signal at the target moment are different, the second interface stops sending data, so that the transmission frequency is reduced, the bandwidth requirement of the first interface is met, and data loss is avoided. On the contrary, if the receiving bandwidth of the first interface is high, when the signal values of the synchronous effective signal and the second effective signal at the target moment are the same, the second interface can perform data transmission. According to the technical scheme, the bandwidth of the second interface can be dynamically adjusted to be matched with the bandwidth of the first interface, bandwidth differences of different interfaces can be adapted, data transmission is more stable, and flexible bandwidth matching is achieved.

A computerized simulation system includes a digital receiver emulator that applies over-sampling and multiplexing to in-phase and quadrature (I-Q) data streams to create a composite I-Q signal stream that represents a signal environment in a bandwidth wider than that of an assumed digital receiver bandwidth, applying a band-limiting filter to reduce the signal bandwidth so as to match the digital receiver bandwidth, and decimating the I-Q signal to match the data rate of the simulated digital receiver. The digital receiver can accurately emulate effects of band-adjacent signals that may be adjacent or overlap with the receiver passband, considering the characteristics of low-pass filters used in real-world receivers. The simulation system may be part of a training system that presents a simulated signal environment to a trainee.

This specification presents a discontinuous reception operation method, characterized in that: in a wireless communication system, a terminal configured with multiple cells performs physical downlink control channel PDCCH monitoring during an active duration; receives bandwidth part BWP setting information, where the BWP setting information notifies a specific BWP; receives a PDCCH based on the PDCCH monitoring, where the PDCCH includes sleep indication information for a specific cell among the multiple cells of the terminal; and activates the specific BWP based on the sleep indication information indicating non-sleep.

The present invention relates to the technical field of ring transducers, and particularly relates to a design method for a multi-excitation broadband ring transducer with a low water permeability coefficient and a low sound insertion loss. By using two rings with the same outer diameter and height but different inner diameters, they are made to operate at two different frequencies f1 and f2 respectively; when in use, the two rings are connected in series or in parallel, and the resonance frequencies of the two rings themselves are coupled to expand the receiving or transmitting bandwidth. In the state where the two rings are connected in series, the anti-resonance frequencies of f1 and f2 are coupled to expand the receiving bandwidth. In the state where the two rings are connected in parallel, the resonance frequencies of f1 and f2 are coupled to expand the transmitting bandwidth; through the design method, the purpose of multi-excitation coupling to expand the bandwidth is achieved while the external dimensions of the transducer remain unchanged.

A user equipment (UE) transmits an uplink (UL) reference signal (RS) to a network without using digital pre-distortion (DPD). The UE receives, from the network, an indication of whether DPD is enabled or disabled for performing the UE’s subsequent UL transmissions, wherein the transmitted UL RS is used for determination of the indication. The UE performs its subsequent UL transmissions with or without using DPD based on whether DPD is indicated as enabled or disabled. The UL RS may be transmitted over a frequency portion of a reception bandwidth of the network, and wherein a location and a width of the frequency portion are tailored so as to allow the network to characterize an Adjacent Channel Leakage Ratio (ACLR) of the UE within the reception bandwidth. The network may, in response to a change in UE UL transmit power, request the UE to transmit the UL RS without using DPD. When DPD is disabled, it may be disabled for as long as the subsequent UL transmissions are performed with a transmit power value that is lower than or equal to a reference transmit power value with which the UL RS was transmitted.

Systems and methods for guaranteeing end-to-end QoS for wireless connections over a cable network are disclosed. Provisioning of on-demand guaranteed bandwidth connection over a cable network uses mechanisms from DOCSIS domain and Wi-Fi domain. A multi-domain orchestrator is implemented to control both domains. A bandwidth request is received from a client device connecting to a network service provider access point. The bandwidth request is updated for both domains with results of speed test of the wireless link if the speed test results are lower than the bandwidth request. The orchestrator and client device negotiate the bandwidth request using a three-way handshake over PacketCable Multimedia (PCMM) protocol. If the available bandwidth on either the DOCSIS or wireless link is less than the bandwidth request, the orchestrator generates a new bandwidth offer. If the client device accepts the offer, the orchestrator configures the DOCSIS and wireless links using their respective domain protocols to provision the connection with guaranteed end-to-end bandwidth.

The present disclosure relates to a radar signal modulator with bandwidth compensation and a frequency offset sequence. For example, a system, method, and circuit device for generating a frequency-hopping radar signal are provided. In one example, the radar signal modulator includes a frequency offset generator, a phase-locked loop (PLL), and bandwidth compensation circuitry. The frequency offset generator is configured to generate a frequency offset sequence. The bandwidth compensation circuitry is configured to combine a modulated signal with the frequency offset sequence to generate a bandwidth-compensated signal. The PLL is configured to receive the bandwidth compensation signal and generate a frequency-hopping radar signal based on the bandwidth compensation signal.

The invention discloses a broadband receiver sampling method, system and device and a storage medium, and relates to the technical field of receivers, and the method comprises the steps: obtaining an input signal of a broadband receiver; dividing an input signal into M paths of sub-signals through an analysis filter bank AFB; sampling each path of sub-signals at a rate of 1 / MT through an ADC, and then carrying out M-time interpolation to obtain M paths of digital signals with a sampling rate of 1 / T; enabling each path of digital signals to pass through a digital filter in a comprehensive filter bank SFB, and then adding and combining the digital signals to obtain an output signal; according to the method, the broadband receiver has larger receiving bandwidth and has remarkable advantages in the aspects of adapting to different communication systems, improving communication link robustness, improving broadband spectrum detection capability and the like, if the structure can be realized, the design of an analog part of the broadband receiver is greatly simplified, and the design cost is reduced. And the receiver can be ensured to have the capability of receiving any sub-signal in the working frequency band.

The invention discloses a receiver parameter determination method and device, equipment, a medium and a program product, and belongs to the field of zero power consumption. The method is performed by a zero power consumption device, the method comprising: determining receiver parameters used by the zero power consumption device, the receiver parameters comprising a receiver type and / or a reception bandwidth. According to the method, the receiver parameters used by the zero-power-consumption equipment are determined, and the receiver parameters comprise the receiver type and / or the receiving bandwidth, so that the receiver parameters corresponding to different scenes are determined in different scenes, the actual demand condition is met, and the use flexibility of the zero-power-consumption equipment is improved.

A signal acquisition unit acquires a reception signal received by a reception device from a transmission device that moves relative to the reception device. A bandwidth specifying unit specifies a reception bandwidth that is a bandwidth of the reception signal. A shift specifying unit specifies a change amount of a Doppler shift per time on the basis of a difference between a bandwidth of a transmission signal in the transmission device and the reception bandwidth. A compensation unit compensates for a change of the Doppler shift of the reception signal on the basis of the change amount specified.

The application relates to the technical field of wireless communication, and discloses a free space optical and millimeter wave / terahertz fusion transmission system and a working method. The system comprises a transmitter, a base station and a central office. The millimeter wave / terahertz signal is generated by adopting a full-optical up-conversion architecture at the transmitting end, the received millimeter wave / terahertz electrical signal is converted into an optical domain signal at the base station, the optical domain signal is fused with a free space optical signal, the fused optical signal is received by a single optical coherent receiver at the central office, and the fused optical signal is processed. The system is accurately designed in terms of optical frequency relationship, so that the two types of heterogeneous signals fall within the receiving bandwidth of the single coherent receiver, and single-receiver reception is realized. The system supports two working modes of high capacity and high reliability, adopts adaptive demodulation or a hybrid automatic repeat request mechanism based on maximum ratio combination in severe weather conditions, improves transmission reliability, and has the technical effects of reducing system complexity, improving spectrum utilization efficiency, enhancing communication reliability and supporting flexible deployment.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit an indication that the UE is a reduced capability (RedCap) UE associated with a maximum reception bandwidth. The UE may receive a configuration of one or more common frequency resources (CFRs) associated with one or more broadcast communications, wherein the configuration of the one or more CFRs is based at least in part on the indication that the UE is the RedCap UE associated with the maximum reception bandwidth. Numerous other aspects are described.

A method of authenticating a received signal comprises receiving signals within a spectrum of bandwidth B, converting the signals into a frequency domain representation of bandwidth B, and segmenting the frequency domain representation of bandwidth B into spectrum segments each of training bandwidth W. For each spectrum segment, the method further comprises applying the spectrum segment to a neural network, and receiving, from the neural network, a radio frequency identification map comprising two or more classification vectors. The method further comprises determining a total variation across the two or more classification vectors and identifying the received signal as authenticated when the total variation is less than a threshold value. The method may further comprise training the neural network using a training dataset of wideband training samples. The method may further comprise generating each of the wideband training samples by stitching together two or more stored signals.

A clutter suppression method uses the local oscillator frequency hopping characteristics of high repetition rate stepping frequency signals, sets the receiver bandwidth and local oscillator frequency hopping interval that meet the conditions, and combines the receiver gating filter to effectively suppress the clutter outside the target echo distance range. Without additional hardware and operation processing, it is convenient to realize, beneficial to subsequent signal processing requirements, improves the visibility level under clutter, enhances the target detection ability, and has good engineering application value.