80 results about "Software define radio" patented technology

The invention relates to the technical field of wireless communication, in particular to a multimode chip core architecture system realized based on a software radio technology, which comprises an anti-interference module used for executing real-time optimization on a multi-system compatible baseband data stream and calling a dynamic compensation mechanism based on dynamic frequency shift characteristics in an environment characteristic data set, adjusting a local frequency source and a channel equalization parameter through multi-stage compensation operation to obtain an anti-interference enhanced data stream; and the packaging module is used for packaging the anti-interference enhanced data stream and the positioning data into a time-hopping pulse-direct sequence code division multiple access fusion frame structure and sending the fusion frame structure through a radio frequency unit. Through an ASIC and SDR hybrid architecture and a four-level hierarchical design, a multi-system communication function is integrated, and the hardware efficiency is improved and the power consumption is reduced.

The invention relates to a reconfigurable equipment simulation system based on software radio, and the system achieves the high-integration, user-friendly and efficient-management reconfigurable equipment simulation system through the modularization and seamless integration of a radio waveform design function, an equipment simulation user operation interface design, a business logic function design and a project management function. Therefore, even if a user does not have a deep programming capability, the user can quickly construct, test, manage and deploy the equipment simulator with complete functions. The system is rich in waveform component and UI component library, customizable in function and good in flexibility, software radio waveform design and equipment simulation are innovatively and seamlessly integrated, automatic non-inductive or manual upgrading can be achieved, the universality is good, various equipment simulators can be designed, the designed equipment simulators have open function expansion, and the system is suitable for popularization and application. And a complete project management process is provided.

The invention relates to the technical field of wireless communication, in particular to a software defined radio-based multi-band dynamic reconfigurable switching system, which comprises an environment sensing module, a band analysis module, a reconfiguration decision module, a switching execution module and a verification module, wherein the environment sensing module is used for collecting an original time domain signal; the frequency band analysis module is used for generating an available frequency band feature list; the reconstruction decision module is used for calculating a comprehensive score of each frequency band and generating a corresponding reconstruction configuration instruction; the switching execution module is used for configuring an SDR radio frequency front end; and the verification module is used for detecting whether response is confirmed. According to the invention, a dynamic wireless communication system with high-precision spectrum identification and rapid reconstruction capabilities is constructed by realizing real-time sensing, intelligent decision and self-verification switching of a multi-band environment, so that the communication stability and the spectrum utilization efficiency are remarkably improved.

The invention discloses a software radio unified modeling method and system, and belongs to the field of software radio, and the method comprises the steps: determining modeling objects as platform modeling and waveform modeling; wherein during platform modeling, abstract modeling is performed on each calculation unit, and during waveform modeling, waveform component modeling and waveform application modeling are included; in the waveform component modeling, at least one modeled waveform component runs on a calculation unit, and a plurality of waveform components can be deployed on the calculation unit at the same time; the waveform application modeling comprises the following steps: establishing a connection relation between waveform components, and assembling into waveform application; then executing a modeling process of creating a platform model, creating a waveform model and establishing a platform and waveform connection relationship, and performing modeling detection; establishing a basic model set after modeling detection; the basic model set comprises a platform model subset and a waveform model subset. The modeling efficiency and the standardization degree are improved.

The invention discloses a high-reliability three-dimensional integrated direct sampling software radio architecture radio frequency microsystem, which is based on a direct sampling software radio system architecture and a multi-layer glass-based TGV adapter plate wafer-level bonded POP three-dimensional stacked packaging architecture. A high-performance glass antenna, silicon-based single core particle Fan-in and Fan-out packaging, mixed multi-core particle integration of an embedded glass-based TGV adapter plate, mixed bonding integration of a silicon-based digital TSV adapter plate and the glass-based TGV adapter plate are combined, and a glass antenna, a direct sampling core particle, a silicon-based computing power circuit, a silicon-based storage circuit and a silicon-based interface circuit are integrated. And the three-dimensional heterogeneous integration of the microsystem is realized. According to the micro-system, a glass substrate is used as a main body packaging material, a radio frequency circuit and a digital-analog hybrid circuit are fused, three-dimensional heterogeneous integration from a glass antenna to a baseband storage and calculation integrated processing circuit is realized, and a complete integrated airtight packaging micro-system is formed and can cover a DC-20GHz frequency band.

The invention relates to the technical field of software defined radio communication, and discloses a dual-mode adaptive communication method and system based on SDR. The method comprises the following steps: receiving an original wireless signal, preliminarily judging a protocol family, and activating a corresponding signal analysis engine and a channel evaluation engine; the signal analysis engine restores a complete communication message unit, and the channel evaluation engine quantitatively represents a channel state. The information of the two information is input into a dynamic decision-making network, and the network learns an implicit association rule between the semantic integrity of the message and the transmission reliability of the channel and outputs a collaborative decision-making instruction containing a mode priority weight vector. The instruction is finally compiled into a hardware configuration parameter sequence, and the radio frequency front end and the baseband unit are driven to reconfigure, so that mode self-adaptive switching is realized. According to the invention, cross-layer intelligent decision and flexible multi-mode scheduling are realized, and the reliability and efficiency of communication in a complex wireless environment are improved.

This invention discloses a comprehensive identification test device and method based on software-defined radio technology, belonging to the field of avionics equipment testing. The device includes: a core processing and control unit, employing a multi-channel high-speed AD / DA and MPSoC FPGA architecture, supporting concurrent operation of various conventional aircraft identification functions through multiple internally integrated models; a radio frequency transceiver module, connected to the core processing and control unit, used for digital frequency conversion and analog-to-digital conversion of signals; a high-power radio frequency front-end component, internally equipped with multi-stage attenuation circuits and isolation devices, used for physical isolation and filtering attenuation of transmitted and received signals, ensuring its power covers the dynamic range of airborne received signals; and a remote control interface for receiving remote control commands to achieve automated test linkage. This invention allows direct connection to test the receiving performance of airborne equipment without the need for external high-power accessories, achieving a high degree of integration and automation of the test equipment, significantly improving detection and troubleshooting efficiency.

The invention discloses a target distance and speed measurement system and method based on a direct detection laser radar compatible with software radio, and belongs to the technical field of target distance and speed measurement. According to the invention, the problems of low utilization rate of echo light power, complex structure, crosstalk of microwave and optical frequency signals, and low precision of distance measurement and speed measurement in the prior art are solved. According to the improved direct detection laser radar structure compatible with the software radio provided by the invention, a radio frequency signal can be demodulated from echo signal light of the laser radar only by a single square-rate photoelectric detector, so that the structure is simpler; and the frequencies for transmitting and receiving the microwave radio-frequency signals are different, so that the microwave crosstalk of the transmitting end and the receiving end is avoided. Due to the fact that the receiving and transmitting separated optical antenna is adopted, crosstalk of optical frequency signals can be eliminated. Moreover, the method effectively improves the measurement precision of the target distance and speed. The method can be applied to target distance and speed measurement.

The invention discloses a resource management method and system for software radio communication equipment with visible heterogeneous resources, and belongs to the field of software radio, and the method comprises the steps: dividing an internal processor of the software radio communication equipment into two types of middleware supporting CORBA and middleware not supporting the CORBA; deploying a manager for a processor supporting CORBA middleware, and carrying out platform modeling according to a software radio modeling method; for a processor which does not support the CORBA middleware, splitting a test function to form test behavior elements, and providing an interface conversion and connector; then the connector is connected with the manager, the manager generates platform topology data according to registration information of the connector, and a unified connection mode of CORBA and MHAL / MOCB is constructed in a fusion mode. According to the invention, the unified management capability of the internal resource management mechanism of the software radio equipment to the processor can be constructed, and the universality level of the platform is improved.

The present application at least describes a method for waveform synthesis. The method may include a step of transmitting a stimulus signal to a software defined radio (SDR) operating in a first state. The method may also include a step of receiving, via the SDR, an output signal based upon the transmitted stimulus signal. The method may also include a step of. determining, based upon the received output signal, a delay state of the SDR from a plurality of predetermined delay states of the SDR. The delay state may be associated with a parameter of the SDR. The parameter may include any one or more of a receive frequency, transmit frequency or bandwidth. The method may further include a step of generating a calibrated signal based upon the determined delay state. The method may even further include a step of sending the calibrated signal to the SDR to adjust a time.

This invention discloses an efficient QR matrix decomposition method based on FPGA for implementing systolic matrices, belonging to the field of software-defined radio signal transmission technology for airborne networks. It is based on the design of a multi-channel digital front-end implemented on an FPGA chip. The method includes: designing a general handshake coordination mechanism, designing a timing flow for systolic matrix multiplication, performing fast QR matrix decomposition single-loop operations by calculating the Householder mirror transformation matrix, designing a top-level loop pipeline for QR matrix decomposition, and finally verifying the hardware scheme of the fast QR decomposition algorithm. This invention converts resource consumption into timing consumption by designing the overall pipeline logic and loop operations, enabling fast processing and accurate decomposition of digital information in a multi-channel digital front-end on an FPGA, effectively saving on-chip resources. In addition, this invention has excellent scalability, supporting 64 to 128-bit high-precision fixed-point number formats, and the data matrix order can reach up to 128.

The invention relates to a fuzzy test method and system, electronic equipment and a computer storage medium, the fuzzy test method is applied to the fuzzy test system based on a 4G / 5G communication network protocol, and the fuzzy test system comprises a 4G / 5G communication base station and a tested terminal which are in communication connection. The fuzzy test method comprises the following steps: controlling a communication protocol stack to detect whether an unexecuted test case exists in a test case library or not; if it is detected that unexecuted test cases exist in the test case library, selecting one test case from the test case library according to a preset sequence as an initial test case; controlling the communication protocol stack to perform data format conversion on the initial test case to obtain an intermediate test case; controlling the software defined radio hardware layer to perform digital-to-analog conversion on the intermediate test case to obtain a target test case; and controlling the software-defined radio hardware layer to send the target test case to the tested terminal to execute a fuzzy test. The fuzzy test efficiency can be improved.

A radio signal surveillance (RSS) device comprises a plurality of radio transceivers of multiple wireless communication technology types and a software-defined radio. The RSS device may be used to scan for signal intelligence data via at least one of one or more transceivers or the software-defined radio that monitors radio signals of one or more radio signal emission devices. The RSS device may send the signal intelligence data via a secure communication channel to a data collection platform. The RSS device may further receive a command from the data collection platform to deactivate or activate at least one radio transceiver of one or more wireless communication technology types and reconfigure according to the command. The RSS device is then used to scan for additional signal intelligence data from radio signals of one or more radio signal emission devices.

This invention relates to the field of wireless communication network technology and provides a heterogeneous stream processing cluster interconnection device in a software radio system. By designing a heterogeneous computing power cluster interconnection architecture in which the radio frequency front-end layer, heterogeneous computing power pool layer, core interconnection layer, and cluster management layer work together, and with the core structure design of heterogeneous cluster internet gateway + high-speed cluster non-blocking switching + global cluster high-precision synchronization + layered cluster deployment, it breaks through the technical bottlenecks of existing heterogeneous computing power cluster integration from the hardware level, and achieves significant improvements in cluster collaboration performance, synchronization accuracy, transmission efficiency, compatibility, reliability, and engineering feasibility, effectively improving the cluster interconnection performance of the heterogeneous stream processing cluster.

The invention relates to a software radio burst waveform-based synchronization method, a software radio burst waveform-based synchronization system, software radio burst waveform-based synchronization equipment and a medium in the technical field of electronic communication. A configured one-way sliding window synchronization algorithm is adopted at a receiving end to carry out preamble capture on a burst signal in a burst communication scene based on software radio, and a system can automatically select a proper sliding window size according to the designed one-way sliding window synchronization algorithm, so that a preamble sequence of a burst communication frame is correctly captured and a baseband symbol rate is adapted; according to the invention, the receiving end can correctly decode the information data, the correlation between the receiving sequence and the leader sequence is ensured, the hardware calculation overhead is reduced, the system is simple to implement, the hardware requirement is low, and the practicability is high.

The invention provides a self-adaptive gridding FPGA (Field Programmable Gate Array) waveform assembly line dynamic reconstruction method and system, which introduces a self-adaptive gridding algorithm, depends on modeling and safe sequence planning based on DAG (Directed Acyclic Graph), and an assembly line parallel scheduling and integrated time sequence calibration mechanism. The problems that in an existing FPGA waveform dynamic reconstruction technology, the resource fragmentation problem is caused by static partition, the system reliability risk is caused by component dependence management deficiency, and the reconstruction delay is large and the real-time performance is poor due to a serial reconstruction mode are solved. According to the method, the utilization rate of FPGA logic resources is remarkably increased, the safety and controllability of the reconstruction process are achieved, the overall reconstruction time is greatly shortened, and meanwhile the processing precision after reconstruction is guaranteed through self-adaptive time sequence calibration. And an efficient hardware dynamic reconstruction solution is provided for application scenes with extremely high requirements on real-time performance and reliability, such as software defined radio and integrated radio frequency systems.

The invention discloses a multi-channel software radio platform modeling method, device, medium and system, and belongs to the technical field of software radio, and the method comprises the following steps: S1, equipment component modeling: defining inherited equipment components, input and output ports and equipment attributes; s2, packaging the equipment component: constructing a container code and a function code, nesting the function code in the container code, and compiling the container code and the function code of the equipment component together to generate an executable code; and S3, communication between the waveform components and the equipment component: when waveforms are deployed in multiple channels at the same time, the waveform components are connected with the equipment component, and the equipment component receives data of the first waveform component through a port and then sends the data to the second waveform component through a bottom layer driver. According to the method, complete decoupling of waveform modeling and platform modeling is supported, and the workload of waveform modeling in the waveform development process can be reduced.

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.

The application discloses a software radio communication method and device for an SoC heterogeneous platform and a software radio communication system. The method is applied to the software radio communication system, shared memory is used for data transmission between an application node and a transmission node, and the application node sends a data read-write address to the transmission node in advance. When data is written into the transmission node, the application node sends to-be-written data packaged into a standard interface format to a storage node and simultaneously sends a data read signal to the transmission node, and the transmission node reads the to-be-written data from the storage node based on a read address. When data is written into the application node, the transmission node sends target data packaged into a standard interface format to the storage node based on a write address and simultaneously sends a data read signal to the application node, and the application node reads the target data from the storage node, thereby realizing communication between different nodes suitable for the SoC heterogeneous platform and effectively improving the communication efficiency of a componentized reconfigurable system such as the software radio.

The invention discloses a modulation signal identification method based on multi-domain feature dimension alignment, and the method comprises the following steps: firstly, collecting an I / Q component of a radio frequency communication signal through software radio equipment, and obtaining a standardized original IQ signal through down-conversion, filtering, analog-to-digital conversion and normalization processing; secondly, constructing a bimodal parallel feature extraction network, extracting time domain features of the IQ signals through a stemIQ unit and a local attention module and adapting the time domain features to R channel features, and extracting time frequency features through STFT, a stemSTFT unit and an efficient additive attention module and adapting the time frequency features to G channel features; thirdly, element-level fusion and convolution enhancement are carried out on the bimodal features to obtain B channel features bearing fusion information, and the three channel features are spliced and converted into an RGB image; and finally, after preprocessing, inputting a CLIP pre-training visual model to extract deep semantic features, realizing accurate identification of modulation signals through a full-connection classification network, and optionally optimizing model performance through end-to-end training.

Described are examples for repurposing mobility management with virtual radio in software radio access networks. A virtual mobile network includes a first server configured to host a first mobile network distributed unit (DU) for providing a first virtual cell to a plurality of user devices via a radio unit. The virtual mobile network also includes a second server configured to host a second mobile network distributed unit providing a second virtual cell via the same radio unit. A radio access network (RAN) intelligent controller (RIC) is configured to control the first DU and the second DU to hand over the plurality of user devices from the first virtual cell to the second virtual cell. The first server may then be shut down for maintenance or updates without dropping service to the user devices.

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 discloses a kind of urban rail transit vehicle-borne signal gap mark dynamic compensation method and system, it is related to rail transit signal control technical field.The present application obtains train operation, brake response, wheel-rail adhesion and signal delay data in real time by multi-source data acquisition unit for the problem of gap mark caused by PR4G / F@stnet radio signal transmission delay, brake system software and hardware imbalance, wheel-rail adhesion coefficient and environmental temperature fluctuation under ATO mode of Thales SelTrac™ CBTC system, and establishes signal transmission delay compensation model based on Kalman filter algorithm to calibrate ATO brake instruction time sequence;Combined with brake system software version and hardware state dynamic adjustment brake curve deceleration threshold and pressure distribution ratio, trigger secondary brake compensation through double closed-loop feedback control and environment-adhesion coefficient joint correction mechanism.Experiment verification shows that the present application can control the distance of gap mark within 0.1m, adapt to different brake software version and environmental scene, without large-scale hardware modification, significantly improve the precision of marking and operation safety, reduce operation and maintenance cost.

An apparatus, system, and methods to use a low-observable encryption device that includes an encryption unit; a communication unit; and a computing unit, wherein a microprocessor comprises two encryption units. The low-observable encryption device may also include an interchangable device. In some embodiments, the interchangable device comprises a computing unit, a software defined radio, an electrical to optical converter, or a combination thereof. In some embodiments, power is delivered by a USB port. In some embodiments, an input interconnect comprises an Ethernet interface, a USB interface, a Wi-Fi interface, a radio interface, a SATCOM interface, or a Bluetooth interface. In some embodiments, an output interconnect comprises an Ethernet interface, a USB interface, a Wi-Fi interface, a radio interface, a SATCOM interface, or a Bluetooth interface.

This invention discloses a multi-channel software-defined radio platform modeling method, apparatus, medium, and system, belonging to the field of software-defined radio technology. The method includes the following steps: S1, device component modeling: defining inherited device components, input / output ports, and device attributes; S2, device component encapsulation: constructing container code and functional code, with the functional code nested within the container code, and compiling the device component container code and functional code together to generate executable code; S3, waveform component and device component communication: when multiple channels are deployed simultaneously with waveforms, the waveform component is connected to the device component. The device component receives data from the first waveform component through its port and then sends the data to the second waveform component through the underlying driver. This invention supports complete decoupling of waveform modeling and platform modeling, which can reduce the workload of waveform modeling during waveform development.

The invention discloses an LDPC (Low Density Parity Check) decoding acceleration method and device based on an RISC-V (Reduced Initiation Standard-Value) custom extension instruction. The method comprises the following steps: extracting an LDPC code from a software radio platform OAI; decoding performance analysis is carried out on the extracted low density parity check code LDPC, and a performance bottleneck module in the LDPC decoding process is determined; designing an RISC-V custom extension instruction for the performance bottleneck module determined in the step 2 based on the open characteristic of an RISC-V instruction set architecture; and performing optimization effect verification and evaluation on the RISC-V custom extension instruction designed in the step 3 by adopting a simulation platform. According to the invention, the memory access and branch processing in the LDPC decoding process are optimized, and the memory access efficiency is improved.

Systems, methods, devices, and machine-readable media for improved communication between a software defined radio front end device and a network based computing device are disclosed in some examples. Rather than grouping samples together, the same bit position from multiple ADC samples can be grouped together. If a quality of service (QoS) metric of a network connection between the RF front end device and the network based processing compute falls below a threshold, the RF front end device can preferentially transmit groups with higher significant bits over groups with lower significant bits. In other examples, the RF front end device can prefer samples corresponding to certain data types over other data types.

The application discloses a kind of software radio communication equipment resource management methods and systems of heterogeneous resource visibility, belong to software radio field, including steps: the internal processor of software radio communication equipment is divided into two types of supporting CORBA middleware and not supporting CORBA middleware;For the processor deployment manager of supporting CORBA middleware, platform modeling is carried out according to software radio modeling method;For the processor of not supporting CORBA middleware, test behavior element is formed by splitting to test function, and interface conversion and connector are provided;Then the connector is connected with the manager, and the manager generates platform topology data according to the registration information of the connector, and constructs the unified connection mode of CORBA and MHAL / MOCB by fusion.This application can build the unified management capability of internal resource management mechanism of software radio equipment to processor, and improve the general level of platform.

Provided is technology for processing demodulation, preprocessing, etc., performed by an existing modem in a hardware form for satellite information received by a ground station at a cloud level based on a software define radio (SDR) mounted to a cloud. A cloud-based satellite information receiving and processing apparatus may include a satellite information collector configured to collect, on a cloud, satellite information received from a satellite by a ground station terminal using at least one antenna; a signal processing unit configured to perform demodulation and preprocessing of the collected satellite information on the cloud based on a software define radio (SDR) mounted to the cloud; and a storage configured to record and maintain the demodulated and preprocessed satellite information on the cloud.

Disclosed embodiments relate satellites using a Software-Defined Radio (“SDR”) system. In one example, a geostationary (GEO) satellite includes an antenna system including multiple antennas, each configured to provide a spot beam having an adjustable throughput for a terrestrial coverage area while the antenna is in an active state and the satellite is in orbit above the Earth, a front-end subsystem communicatively coupled to the antenna system having an input side including an input filter and an analog-to-digital converter, and an output side including an output filter and a digital-to-analog converter, and a software defined radio (“SDR”) communicatively coupled to the antenna system via the front-end subsystem. The SDR, in response to a surge modification request, modifies a throughput of each active antenna by increasing or decreasing a share of a satellite power budget allotted to the antenna by deactivating or activating a previously active or previously inactive antenna, respectively.