220 results about "Path number" patented technology

The invention provides a decoding method and a decoding device for polar codes concatenated with a cyclic redundancy check (CRC). The decoding method includes the following steps: SC-list decoding is carried out on the polar codes according to the number, which is L, of survival paths to obtain the L survival paths, wherein the L is a positive integer; each of the L survival paths is subjected to the CRC; and when none of the L survival paths passes the CRC, the number of the survival paths is increased, and decoding results of the polar codes are obtained according to the number, which is increased, of the survival paths. According to the decoding method and the decoding device for the polar codes concatenated with the CRC, the path number of the survival paths is adjusted according to the result of the CRC, and therefore the paths which can pass the CRC can be output as far as possible, and the decoding performance is improved.

The invention relates to a general miniature programmable controller and a controlling method of the same. The programmable controller comprises a programmable device, a PLC mainframe, 1-4 human-machine interface modules, an extensive module and a CAN bus. The PLC mainframe consists of a flush type microprocessor ARM, an analog quantity input and output module, a digital quantity input and output module, a FLASH memory, a SDRAM memory, an EEPROM memory and an FPGA reconfigurable control algorithm coprocessor, the maximum of a configured I / O point size reaches 256, the maximum of an A / D path number reaches 24, and the maximum of a D / A path number reaches 12. The controlling method is as follows: automatic control of a complicated controlled object is realized, the input and output extensive module flexibly is configured and the computing time of the control algorithm is enabled not to occupy the time for the general miniature PLC to execute program by controlling program initialization, controlling program execution data preparation, controlling program execution and controlling program data transmission steps with intelligent control algorithm compiled in the FPGA.

This paper describes preferential path profiling, which enables profiling a specified subset of all possible program paths with very low overhead. Preferential path profiling compactly identifies paths of interest using an array. More specifically, PPP assigns a unique and compact path index identifier to all interesting paths that can be used to index into a path array. The path array contains a second path value identifier that is used to distinguish interesting paths from other program paths This path numbering allows the implementation of preferential path profiling to use array-based counters instead of hash table-based counters for identifying paths of interest and gathering path profiles, which significantly reduces execution time and computational resource overhead during profiling.

The invention discloses a multi-population chaos grey wolf algorithm-based multi-unmanned aerial vehicle cooperative path planning method. The method comprises the steps of firstly, building a multi-vehicle cooperative path planning model on the basis of a three-dimensional planning space; secondly, building a multi-unmanned aerial vehicle initial track set by combining a multi-population idea; and finally, searching optimal path of each unmanned aerial vehicle by a chaos grey wolf optimization algorithm. According to the method, cooperative path numbering of multiple unmanned aerial vehiclesis achieved by introducing the multi-population idea, the path searching range is expanded by chaos local searching, the problem that an original algorithm is easy to get in local optimization is effectively solved, the algorithm stability is improved, and a better path planning effect can be achieved. The employed multi-population grey wolf algorithm involves a few adjustment parameters and is rapid in convergence speed, multi-dimensional space searching and path planning under different conditions can be achieved, different constraint conditions and planning requirement are met, and optimalpath searching of an unmanned aerial vehicle group is achieved.

The invention relates to a multipath routing reliable transmission method based on network coding. The method comprises the steps as follows: a converged node periodically broadcasts routing update information, and each node acquires hop counts from self to the converged node and a neighbor table which contains all neighbor nodes and residual energy thereof; a source node calculates the needed path number; the source node encodes data packets needing to be transmitted, selects the next hop of node and sends the data; after the next hop of node receives the encoded packets, the data packets with the same group of marks are encoded, and the needed path number is recalculated; and the process above is repeated until the last node arrives at the converged node, and then the original data packet is decoded by the converged node. By adopting the method provided by the invention, reliable transmission of the network and the balance of the energy of the network can be guaranteed.

The invention provides a video processing system based on cloud computing, comprising: a video storage unit, a schedule management server and a video processing unit, wherein the video storage unit is operable on network node equipment and used for storing video data through subordinate network node equipment; the schedule management server is operable in the cloud and used for responding to video request information of a user, computing computation capability of the network node equipment of the cloud computing system according to the video request information, assigning a video processing task to the video processing unit according to the computed result, and returning the video processing result to the user; and the video processing unit is operable on the network node equipment and used for receiving the video processing task, extracting the video data required by the user from the video data stored in the video storage unit according to the task, carrying out video processing on the extracted video data through the subordinate network node equipment, and returning the video processing result to the schedule management server. Through the invention, media network establishment and management costs are reduced, and concurrent path numbers and efficiency are improved.

The present invention discloses a Ethernet data communication method and system wherein the method comprises, dividing the multi-path Ethernet data frame on the sending end and adding the position information, the dividing element adding the E1 frame byte to form E1 frame, which is transmitted to the receiving end through multiple E1 chain circuits, the receiving end storing the E1 frame data into the relevant position in the buffer area accorded the received E1 frame path number and the position information in the E1 frame, and transmitting the Ethernet frame. In accordance with the invention, the requirement for large business capacity and high transmission quality can be met.

The invention provides an electronic mechanical brake system which comprises a brake signal inputting unit, an EMB (electromechanical brake system) control unit, an EMB drive unit, and a plurality of electric brakes corresponding to a plurality of wheels respectively, wherein the signal inputting unit is used for generating brake signals and outputting the brake signals to the EMB control unit in real time; the EMB control unit is used for receiving the brake signals and outputting a plurality of paths of duty ratio signals to the EMB drive unit; the path number of the duty ratio signals is equal to that of the electric brakes; the EMB drive unit is used for receiving the duty ratio signals in real time and driving and controlling the plurality of electric brakes according to the duty ratio signals; and the plurality of electric brakes are respectively used for braking the corresponding wheels. Correspondingly, an automobile adopting the braking system is provided. The electronic mechanical brake system has the advantages of simple structure, small volume, convenience in installation, low cost, fast braking response, good braking stability, no pollution, and the like.

The invention discloses a processing method and a processing device of a video image, and aims to solve the problem of heavy server pressure and little concurrent path number in the prior art. The method comprises the following steps: a second video image to be embedded to a first video image is encoded by adopting a predictive encoding method; when the first video image is encoded, the images located out of the embedded zone in the first video image are encoded by adopting a real-time encoding manner; as for the image located in the embedded zone in the first video image, a second video image encoding is directly used as the encoding located in the embedded zone in the first video image. With the adoption of the method, the zones required to be encoded by adopting the real-time encoding method in the first video image are reduced, so that the calculations of the real-time encoding are reduced, the pressure of the server is lightened, and the concurrent path number of the server is improved.

The invention discloses a super bandwidth receiving method and receiver of a pulse peak detection, which is characterized by the following: making the peak envelope dose received the signal by the antenna and extracted by the detector into the digital signal by the comparator; sampling the quantized envelope signal according to the code element cycle per path by the parallel multi path sampling circuit; coding according to the sequence of the sampling from small to big; dealing with every path and the frame sequence; determining that the sampling time of the smallest path is the origin of pulsed signal in the corresponding output more than threshold and the digital is the origin of the frame signal; inputting the parallel multi path signal and sliding a code element cycle and proceeding with the above process again if not; adding the sampling value when the original time and a plurality of the subsequent numbers aren't less than one and more than the sampling path number; judging ' 1' if more than the set demodulation threshold; judging ' 0' if less than threshold. The invention makes the super bandwidth technique into the simple structure and the high speed communication method in the short distance wireless communication.

This invention relates to a design method for the flow circuit of a heat exchanger, which is suitable to the condenser and evaporator in refrigerator or air conditioner using single or mixed refrigerant. In said design multiple factors are comprehensively considered, such as constant heat flow principle and field coordination principle. It is provided that as the phase state of the refrigerant running in tube changes, the flow path number, the type of the fin out of tube and the reinforcing structure in tube should be changed, and suitable nodes should be selected to branch or interflow the flow. The heat exchange characteristic of refrigerating and air conditioning apparatus can be obviously raised.

The invention provides a computational fluid dynamics (CFD) technology-based method for optimizing an acoustic path of a multi-path ultrasonic flowmeter assembled in an elbow pipe. The method mainly comprises the following steps: calculating a Reynolds number, a Dean number and a boundary layer thickness according to pipeline conditions; modeling a pipeline and the flowmeter by utilizing three-dimensional modeling software, and assembling a pipeline model and a flowmeter model according to different assembly angles; selecting CFD software, and introducing the assembled models and setting parameters; simulating the flow field distribution of different flow speeds, recording the average flow rate at an inlet, and calculating the flow rate of the section of the acoustic path; linearly fitting the calculated flow rate errors of each group, and correcting the errors of each group according to the fit slope; screening the group with the minimum error fluctuation range in the flow speed range, and taking the acoustic path section, acoustic path number and assembly angles of the group as an optimal acoustic distribution scheme under the pipeline characteristic condition. The CFD technology-based method for optimizing the acoustic path of the multi-path ultrasonic flowmeter assembled in the elbow pipe can be used for guiding to reasonably select the acoustic path number measurement section and assembly angles of the multi-path ultrasonic flowmeter under an assembly condition without a straight pipe section.

The present invention expands the beams of gaussian distribution laser beams output by a laser through a light beam expander, then uses a light beam homogenizer to convert the laser beams with spatial energy in gaussian distribution into the laser beams with spatial energy in flat top distribution, and finally uses optical fiber beam splitters to execute multi-channel light distribution to homogenized laser. Adjusting the optical fiber length of each optical fiber beam splitter can control the phase output by each laser beam, so as to make the output laser beams inphase and synchronous. The present invention solves the technical problems that the prior art is huge in volume, high in cost, less in light path numbers, inconvenient to guide light beam direction, short in transmission distance and inapplicable to high-power laser occasions. The present invention is uniform in light distribution, optional in laser output positions, flexible and convenient to use, and capable of realizing hundreds or thousands of channels of the output phase uniform in energy or the laser output with fixed phase delay. The present invention can be used for high-power laser continuous type and pulse type laser light beam distribution and combination, and is especially applicable to the fields such as national defense electronic countermeasure and target recognition.

The invention provides a multi-party call multi-mode speech synthesis method, a multi-party call multi-mode speech synthesis system and a multi-party telephone call server. The method comprises such steps as decoding, unified re-sampling, silence detection, speech synthesis, echo cancellation, coding and the like, wherein in the step of speech synthesis, different speech synthesis modes are set in accordance with different path numbers of non-silence speech signals detected. The speech synthesis method disclosed by the invention not only can eliminate an overflow phenomenon but also can propose an individual sound mixing processing scheme according to actual situation through achieve statistical analysis on speech situations of various call parties, and moreover, the speech synthesis method can keep the original characteristics of the various paths of the speech signals to the greatest extent; the speech synthesis method is simple in algorithm and rapid in sound mixing, and in addition, the speech synthesis method is free from the invasion of serious noise and is capable of achieving high-quality multi-party call.

Multiword expressions are mapped to identifiers using finite-state networks. Each of a plurality of multiword expressions is encoded into a regular expression. Each regular expression encodes a base form common to a plurality of derivative forms defined by ones of the multiword expressions. Each of the plurality of regular expressions is compiled with factorization into a set of finite-state networks. A union of the finite-state networks in the set of finite-state networks is performed to define a multiword finite-state network and a set of subnets. The multiword finite-state network and the set of subnets are traversed to identify a path corresponding to one of the plurality of multiword expressions, wherein only transitions originating from the multiword finite-state network are accounted for to ascertain a path number identifying a base form of the one of the plurality of multiword expressions.

This invention relates to a method and a device for realizing sharing of IP message load, in which, the method includes: utilizing the IP address of a message source, target IP address and an exclusive identified field identifying a part of a message as the key of the load sharing hash algorithm based on the data flow to get the result of digit corresponding to the load sharing path number, taking the result as an index to look for the corresponding load sharing path to transmit the IP message, which integrates the advantages of the load sharing algorithms based on data flow and messages to share messages to all of the sharing paths both multiple data flows and a single data flow.

The invention relates to a multipath channel estimation method which comprises the following steps: roughly estimating a multipath channel to obtain an initial estimated value of a multipath channel time-lay di; calculating an initial estimated value of an amplitude adjustment coefficient Ai from the initial estimated value of the multipath channel time-lay di; refining the multipath channel time-lay di and the amplitude adjustment coefficient Ai by using a matching pursuit (MP) method to obtain refined multipath channel time-lay di and the amplitude adjustment coefficient Ai; and determining an impulse response h(n) of the multipath channel according to the path number M of the multipath channel and the estimated values of the multipath channel time-lay di and the amplitude adjustment coefficient Ai, and obtaining a multipath channel model. The method can better optimize channel parameters, construct more precise channels, and improve the anti-jamming property and robustness of the multipath channel.

The invention discloses a beam allocation method, device and system for a multi-user millimeter wave communication system, and belongs to the technical field of wireless communication. The beam allocation device includes a beam search module, an initialization selection module, a path number determination module, a single path priority determination module, a beam allocation module, a single path user beam allocation module, an adjustment update module, and a circulation termination determination module. The method makes full use of multipath information when different users communicate with a base station and performs beam allocation to users through the base station so that a maximum number of users can be served simultaneously when the base station can allocate mutually different transmission codewords to all service users, and the user rate is greatly increased.

The invention relates to a method for realizing binding interface edge-to-edge false line simulation service and relative system. Wherein, said method comprises: first, distributing sub-path number to the number of built binding interface, and consulting the binding parameters; the transferring user report on the binding interface, and according to the sub-path number, transferring the report to relative user interface. The invention can realize one-to-one chain consultation of binding user interface, with simple process.

The embodiment of the invention discloses a service recovering method, belonging to the technical field of network communications. The method comprises the following steps: a node device receives a recovery path creation request, and the recovery path creation request carries the recovery path number corresponding to the service to be recovered; the node device acquires preset recovery path information corresponding to the service and the current usable time slot according to the recovery path number; the node device judges whether the node device is an end node of the service according to the recovery path information; if the node device is the end node of the service, the node device configures at least two recovery paths according to the current usable time slot, establishes the cross connection between the at least two recovery paths and sends the recovery path creation request to downstream nodes according to the recovery path information. The embodiment of the invention also discloses a service recovering system and a node device. Through the technical scheme provided by the embodiment of the invention, the service recovering speed can be quickened, and the system recourses are effectively saved.

The invention discloses a channel parameter estimation method and a channel parameter estimation system. The method comprises the following steps of: A, initializing a channel by utilizing a beamforming method to obtain initial values of a channel parameter set, and determining an initialized path number; B, dividing a multi-path packet in a time delay domain, and performing parameter estimation on paths in the initialized path number in a multi-path packet way based on the initial values of the channel parameter set to obtain parameter sets of each selected path; and C, judging whether the paths are abandoned or not based on the estimated parameter sets of each path. The method and the system are more consistent with a transmission mechanism in which the paths exist in clusters in a wideband system, and are applied to the processing of massive data; and arithmetic speed is increased.

The invention discloses an enhanced source position privacy protection method based on phantom single-path routing in a wireless sensing network, and belongs to the technical field of security of the Internet of things. The enhanced source position privacy protection method comprises the following steps that in a network security initialization stage, the static deployment of nodes and the preloading of network parameters are realized; in a source node h-hop limited flooding stage, nodes in a visible region are marked, in addition, the hop value with the minimum distance from nodes in the source node h hops to source nodes except for the nodes in the visible region is worked out, and then, a base station broadcasts initialization messages to nodes in an invisible region; in a random h<x> hop directed routing stage, an annular phantom source node region which leaves away from the source nodes as far as possible is generated; in a shortest path routing stage, an effect of sending a data packet from phantom source nodes to the base station in a short time is realized. The enhanced source position privacy protection method belongs to a source position privacy protection method with the advantages that the random directed path number can be increased, and the failure path generation can also be avoided. Compared with the existing scheme, the enhanced source position privacy protection method has the advantages that the source position privacy security is obviously improved, and the average security time is also greatly prolonged.

The invention provides a parametric channel estimator for the orthogonal frequency division multiplexing (OFDM) communication system; the parametric channel estimator is characterized in that the receiver end firstly adopts a novel parameter estimator to estimate two types of channel parameters, including the path number and the time delay corresponding to each path; the whole channel coefficient is accurately estimated according to the estimated channel parameters; compared with the parametric channel estimator in the prior art, the parametric channel estimator provided by the invention not only can accurately estimate the channel under low signal-to-noise ratio, but also can reduce the computation complexity of the estimator effectively.

The invention discloses a screen splitting method and device of a monitor video. The method comprises steps of counting paths of received code streams; determining, according to the path number of the code streams, quantity of display windows to be displayed on a display screen; adjusting the layout of display windows on the display screen according to the quantity of display windows; and sequentially accessing code streams to adjacent display windows to display. Through adoption of the screen splitting method, display windows on the display screen are displayed intensively, and the use ratio of the display screen is improved effectively.

The invention discloses a continuous elimination list decoding method of a software polarization code. Through establishment of a reference matrix and combination with the position of a current decoding bit, an upper bound and a lower bound of a phase needing to be copied are positioned; and the upper bound and the lower bound are mapped to a memory, only values between the two bounds are copied, and thus the quantity of copy operation is reduced. Compared to a conventional decoding technology, the method has the following advantages: under the condition that the decoding performance is not affected, the same data is prevented from being copied when a path is updated, the path updating time delay is substantially reduced, and the decoding throughput is improved; after the current bit is decoded, the reference matrix is updated; and the decoding method provided by the invention has universality and can be applied to different polarization code lengths, code rates and path numbers.

The invention discloses a method for realizing federated filtering and timing synchronization in a digital communication system. The method comprises the following specific steps of: 1, selecting the length for FFT (Fast Fourier Transform) according to a required parallel path number; 2, performing frequency domain filtering; 3, performing timing error compensation in the frequency domain; and 4, calculating a timing error and outputting data subjected to filtering and timing synchronization. According to the method for realizing federated filtering and timing synchronization in the invention, a filter is combined with timing synchronization, the synchronous output path number of the filter is reduced, the computationally expensive required during realization is greatly reduced, the complexity required during realization is lowered, and a system can meet the requirement for high-speed digital communication.

The invention relates to a multi-screen controlled display method in a video conference system, which comprises the following steps: firstly, respectively confirming the number of displays which are arranged on each terminal by each terminal of the video conference system, then, broadcasting identity numbers which are corresponded with video information which is displayed by each display and the identity numbers which is corresponded with the video information that the host leads each attendant to focus on as key points at present after the video information which is displayed by each display of the terminal which is taken as the host is confirmed, and then abstracting the video information whose path number is same with the number of each display by each terminal from a supply unit according to information which is broadcasted by the terminal which is taken as the host and the number of each display, and then re-broadcasting the identity numbers which need focusing as the key points by the terminal which is taken as the host when the video information that the host leads each attendant to focus on as key points to enable each other terminal to carry out corresponding display regulation, which can realize synchronously displaying the video information which needs focusing as the key points.

The invention relates to a resource satellite imaging task arrangement and service method, which has functions of arranging task; calculating Greenwich mean time, Peking time and local time of a position when the satellite travels through the position; calculating earth station coverage area and running rate of the satellite; calculating distance between arbitrary two points on surface of the earth; calculating corresponding relation of side-sway distance and side-sway angle; calculating corresponding relation of latitude and longitude as well as PATH and ROW; calculating corresponding relation of date and PATH number; calculating corresponding relation of loop number and the PATH number; converting the data and data product; calculating date corresponding to a data adding a number of days; converting second product and data; and converting degree, minute, second and number of degrees. According to the sun synchronization and regression characteristic of the satellite, the invention calculates conditions of other track including passing data and image time by using a track (such as a track passing through Beijing) as reference, arranges imaging with high efficiency and satisfies various demands of users.

In a control device of a computer system in which a plurality of host computers are capable of sharing a same host interface of a storage system are provided: a VOL status monitoring portion that monitors a VOL status of each VOL mapped to the VVOL and determines whether or not the VOL status is changed, and a path number control portion that updates the number of paths connecting to a VVOL in which the VOL status has changed.

The invention discloses an evaluation method for space activity concentration of an airborne radioactive substance source of a nuclear power plant. The evaluation method comprises the following steps: aiming at each decay chain of radionuclides, generating decay-migration grids and storing derived decay-migration chains; aiming at each space and each radionuclide in the decay-migration grids, obtaining path numbers from the decay-migration at a starting point to each space-radionuclide grid point and path numbers from the decay-migration of each space-radionuclide grid point to an ending point; aiming at each decay-migration chain, obtaining the activity concentrations of relevant radionuclides in each space according to the corresponding decay constant and removal ratio; accumulating the activity concentrations of the relevant radionuclides of all decay-migration chains in all spaces and comparing the accumulated value with a preset space activity concentration threshold of the relevant radionuclides. According to the technical scheme, accurate evaluation of the airborne radioactive substance source is realized by using a linear subchain technology.