154results about How to "Reduce Detection Complexity" patented technology

The invention discloses a method and device for transmitting a control channel and a communication node. The method comprises the following steps: sending a first message to user equipment (UE), wherein the first message includes a set of control channel configuration information; determining control channel configuration information used in transmission of the control channel for the UE according to the control channel configuration information set; and transmitting the control channel according to the control channel configuration information used in the transmission of the control channel determined for the UE. The control channel configuration information used in the transmission of the control channel can be determined for the UE, and the control channel is transmitted (received and sent) according to the control channel configuration information, so that the UE can directly transmit the control channel corresponding to the control channel configuration information during transmission of the control channel, and the detection complexity of the UE is lowered.

The invention discloses a Bluetooth beacon device based system and method for detecting the stay time of a user in an area. The system comprises at least one Bluetooth beacon device in the area and an intelligent terminal. The intelligent terminal receives a basic data packet and an expanded data packet sent from the Bluetooth beacon device, parses indication information of the basic data packet and the expanded data packet, and stores UUID of the corresponding data packets as basic information and expanded information; when it is determined that the basic information and the expanded information are stored in the UUID of the corresponding Bluetooth beacon device, the intelligent terminal further determines that area indication information is included in the expanded information, and current time is recorded in a stay time list which is established for an area identification in the area indication information; and the stay time in the area is determined according to the recorded time in the stay time list. Thus, the detection accuracy is improved, and the detection complexity is reduced.

The invention provides a signal sending method based on filtering in a carrier modulation system. The method comprises the following steps: for each sub-band of an available frequency band in the system, a transmitter determines a reference signal pattern of the sub-band and sends the information of the reference signal pattern to a receiver; the transmitter inserts a reference signal in the corresponding time-frequency resource according to the reference signal pattern of each sub-band, and performs carrier modulation and time domain filtering processing on a data signal and the reference signal, and sends processing results of sub-band signals, wherein the reference signal is used for estimating the frequency response of an equivalent channel of a physical channel from a time domain filter and the transmitter to the receiver. The invention further provides a receiving method, a transmitter and a receiver. By adoption of the signal sending method, the storage demands and the detection complexity of the receiver can be greatly reduced.

The invention discloses an information transmission method, network equipment and a terminal. The method comprises the following steps: configuring a target transmission resource for an advance indication signal; and sending an advance indication signal to the terminal through the target transmission resource, wherein the bandwidth occupied by the target transmission resources is smaller than or equal to that occupied by the SSB. According to the embodiment of the invention, the target transmission resource which is the same as or narrower than the SSB in frequency band is configured for the advance indication signal, and the advance indication signal is transmitted through the target transmission, so that the terminal detects the advance indication signal on the target transmission resource, and the detection complexity and the detection power consumption of the terminal can be reduced.

Disclosed in the present application are a method for sending and detecting synchronisation information, and a user device. The method comprises: a sending device sends a synchronisation signal, and on the basis of its own network connection state and / or reference synchronisation source information, determines whether to send synchronisation information on a synchronisation channel corresponding to the synchronisation signal; if determining to send synchronisation information on the synchronisation channel, then the sending device, on the basis of its own network connection state and / or reference synchronisation source information, determines the synchronisation information that needs to be sent on the synchronisation channel and, on appointed physical resources, sends the determined synchronisation information by means of the synchronisation channel. The present application provides a solution for sending synchronisation information in a D2D application scenario; the sending device can, on the basis of its own network connection state and / or reference synchronisation source information, determine whether to send synchronisation information on a synchronisation channel corresponding to a synchronisation signal, and the synchronisation information carried in a synchronisation channel can transfer between user devices the synchronisation information thereof, expanding the scope of synchronisation.

The embodiment of the invention provides an encrypted content detection method and device. The method comprises the steps that a middle box network device receives key information of a TLS (Transport Layer Security) channel through a first security channel, wherein the key information is sent by a key manager; the middle box network device obtain encrypted application data according to quintuple information of the TLS channel, wherein the encrypted application data is transmitted through the TLS channel; and the middle box network device decrypts the encrypted application through adoption of a session key and detects decrypted content. According to the encrypted content detection method provided by the invention, the encrypted application data is decrypted through the middle box network device and the decrypted application data is detected through the middle box network device, so the detection of the encrypted content no longer depends on a TLS proxy server, the detection complexity can be reduced, and the detection cost can be reduced.

The present application discloses a channel state information feedback method and device. In the application, a terminal performs channel measurement to obtain channel state information (CSI) comprising a first CSI and a second CSI. The first CSI comprises the composition information of the second CSI used for determining the number of bits of the second CSI. The terminal sends the first CSI and the second CSI to a base station. By adopting the channel state information feedback method and device, the base station can determine the number of bits of the second CSI according to the first CSI, thereby reducing the detection complexity of the base station for the second CSI.

Embodiments of the invention provide an abnormal data detection method and apparatus. The method comprises: converting a graph used for describing to-be-detected data into adjacent matrixes A, wherein L is used to represent adjacent matrixes without sub-graphs of abnormal data in the adjacent matrixes A, and R is used to represent adjacent matrixes with the sub-graphs of the abnormal data in the adjacent matrixes A; detecting whether the to-be-detected data contain noise data or not; establishing different convex optimization expressions according to different detection results, wherein in the established convex optimization expressions, the low-rank property of L is ensured by utilizing a nuclear norm of L, the sparsity of R is ensured by utilizing a first-order norm of R, the nuclear norm of L refers to the sum of singular values of L, and the first-order norm of R refers to the sum of absolute values of all elements in R; and solving the established convex optimization expressions to obtain L and R. According to the embodiments of the invention, the complexity of detection can be lowered and the accuracy of detection can be improved.

The invention provides an information transmission method and a communication device. The method comprises the following steps: determining a corresponding relationship between a first aggregation level AL set associated with a plurality of first PDCCH candidates and a second AL set associated with a plurality of second PDCCH candidates, wherein the corresponding relationship is a corresponding relationship between at least one first AL in the first AL set and at least one second AL in the second AL set; and detecting at least one first PDCCH candidate in the plurality of first PDCCH candidates and / or at least one second PDCCH candidate in the plurality of second PDCCH candidates according to the corresponding relationship. When a plurality of DCIs are detected, the AL corresponding to theDCI to be detected can be determined according to the corresponding relationship between the ALs corresponding to the plurality of DCIs, and the DCI is detected in the PDCCH candidates correspondingto the AL, so that the DCI blind detection complexity is reduced.

The invention relates to the mobile communication technology, in particular to a low-complexity spatial modulation system detecting method. The method mainly includes the steps that specific subsets are selected from a constellation symbol neighbourhood, first-time traversal search is carried out, so that bit information for activating a transmitting antenna is determined according to selected M minimum Euclidean distance results, or the quadrant where a transmitting symbol is located is determined according to the quadrant where the symbol corresponding to the combination with the minimum Euclidean distance is located, and then secondary search is carried out. First-time traversal search is performed on selection of the specific subsets of four quadrants, the number of possible detection sending signals of search can be reduced, so that detection complexity of a receiver is effectively reduced, and good detection performance is obtained under the condition of low complexity. The detecting method is particularly suitable for a spatial modulation system.

The invention discloses a multi-hop wireless collaboration relay scheme which can realize full-rate data transmission, and is applicable for a distributed wireless communication network. In the scheme, the data transmission from a source node S to a target node D is finished by three links; each link consists of a plurality of relay node groups in a forwarding mode; the data communication on each link is divided into a plurality of basic transmission processes; distance relay communication can be realized by cascading the basic transmission processes; each basic transmission process consists of three communication stages, a baseband signal transmitted in each communication stage is a modulation symbol obtained by linear complex field coding; each relay node group finishes the forwarding of the received signals by adopting a cycle delay diversity way; and while the high-reliability information transmission is realized, the receiving end only needs to perform joint detection on three symbols, so that the detection complexity is low, and the practical value is high. In addition, in the relay transmission process, if the relay groups in unequal numbers are distributed for the to-be-transmitted information with different priority levels and error code performance requirements, the disclosed multi-hop collaboration relay scheme can be used for the hierarchical transmission of data after being adjusted, so that the transmission quality requirements of a plurality of types of wireless service are met.

The invention discloses a frequency spectrum detecting method based on a limited random matrix. The method mainly solves the problem that according to an existing spectrum detecting method based on a characteristic value, a detection threshold is difficult to obtain, and the energy frequency spectrum detection method is greatly affected by noise uncertainty. The method comprises the implementation steps of (1) collecting data x (n) of the frequency band by a detection user according to the detected frequency band, (2) constructing a variance matrix Rx by the detection user according to the collected data, and performing Cholesky decomposition on the matrix, (3) calculating the detection statistical magnitude T Xi, (4) analyzing the probability distribution of the detection statistical magnitude T Xi, calculating the detection threshold gamma Xi under the target false alarm probability according to the probability distribution of T Xi, and (5) comparing the detection statistical magnitude with the detection threshold by the detection user, and judging whether a main user exists or not. The method has the advantages of being resistant to noise uncertainty, accurate in detection threshold and high in detection performance and can be used in wireless communication.

The invention discloses a polarization code-based low-complexity PDCCH (Physical Downlink Control Channel) channel blind detection method, which belongs to the field of communication. Firstly, a candidate DCI (Downlink Control Information) format which needs to be detected is determined; PDCCH candidates are then extracted one by one for decoding, d decoding results are obtained, and d path metricvalues CM are calculated at the same time; a decoding result which is checked to be correct is screened from the d decoding results; when the number of results is greater than 1, the information length corresponding to the smallest metric value is selected as the result for the current candidate PDCCH; when all PDCCH candidates do not have an information sequence conforming to CRC check, the information length corresponding to the smallest metric value CM is selected as the DCI information length actually carried by the current candidate PDCCH; and finally, CASCL decoding is carried out according to the information digit number carried in the current candidate PDCCH, an RNTI is descrambled for checking the CRC, if the CASCL decoding succeeds in checking, the correct result of the currentcandidate PDCCH is found out, or otherwise, a next candidate PDCCH is selected until the search is completed. The complexity of blind detection is reduced, and the practicability is good.

The invention belongs to the technical field of mobile communication, and particularly relates to a QR decomposition detection method under a novel system combined with spatial modulation and quasi-orthogonal space time block codes. The QR decomposition detection method comprises the steps that first, antenna combined modes are selected and traversed, and an equivalent channel submatrix corresponding to an activated antenna combined index is obtained; QR decomposition is conducted on the equivalent channel sub matrix, so that an upper triangular matrix R is obtained; afterwards, the last sign is demodulated, judgment is made by using a maximum-likelihood criterion, and when other signs are detected, interference of the detected signs is sequentially subtracted. Due to the fact that each antenna combined mode corresponds to a set of solution vectors, the Euclidean distance between received signals is calculated respectively, the solution vector corresponding to the minimum value serves as an optimal detection sending signal, the corresponding sending combination is an activated sending antenna combination. Through QR decomposition, the searching frequency can be reduced, the detection complexity of a receiver is lowered, and excellent detection performance can be achieved under the low complexity condition.

The invention provides a method for detecting the concentration of a mixed acid solution. In the prior art, the concentrations of various acids in a mixed acid to be detected cannot be accurately measured, or a detection process is complicated, the consumed time is long and more materials are used. The method for detecting the concentration of the mixed acid solution comprises the following steps: providing the mixed acid to be detected with a pre-set volume and a pH compound electrode; titrating with alkali liquid and detecting to obtain a first equivalent point and a second equivalent point by the pH compound electrode; determining the concentration of total hydrogen ions and the concentration of fluosilicic acid in the mixed acid through the first equivalent point and the second equivalent point; carrying out acid titration to recover the pH value of the mixed acid to be neutral; then adding lanthanum nitrate to titrate and detecting by the pH compound electrode to obtain a third equivalent point; and determining the concentrations of hydrofluoric acid and nitric acid through the third equivalent point, the concentration of the fluosilicic acid and the concentration of the total hydrogen ions. By adopting the method, the concentrations of all the acids in the mixed acid of the three acids can be accurately detected, the complexity of detection and calculation is extremely reduced and the professional requirements on detectors are lowered.

The invention discloses a generalized spatial modulation system receiver detection method combined with a threshold decision. Through the combination and sorting of transmitting antennas, a balanced detection algorithm is used to detect a detection transmitting signal under a sorted transmitting antenna combination, whether the detection transmitting signal is reliable or not is detected combined with a threshold decision, once the detection transmitting signal is reliable, the detection transmitting signal can be taken as a final estimation transmitting signal, and only when all detection transmitting signals are not reliable, all detection transmitting signals are needed to be subjected to traversal to select an optimal signal as the estimation transmitting signal. According to the method, through the threshold decision, the number of the searched possible detection transmitting signals can be reduced, thus the detection complexity of a receiver is effectively reduced, and better detection performance is obtained under the condition of low complexity.

The invention provides a detecting method of high order modulated (multi-input multi-output) MIMO system in a mobile environment. The method mainly solves the problem that the current high order 4q-QAM modulated MIMO multiplex system has a high detection complexity. The detecting method comprises the following steps of: performing a region division for the constellation points of the 4q-QAM according to the stratified characteristic of the 4q-QAM; determining candidate regions based on the modulated sublayer data with greater weight coefficient; preferring the constellation points in the candidate regions according to a principle of minimum distance between the constellation points and corresponding received data; searching for preferred constellation points of each layer by using a spherical detection (SD) algorithm and determining transmitted data. Compared with a multi-state spherical detection (MSD) method, the detecting method has a lower complexity and a higher bit error rate performance; compared with the SD, the detecting method has a much lower complexity in a high signal to noise ratio (SNR) or a low SNR; therefore, the detecting method can be used in the design and realization of receiver in the high order modulated MIMO system in a mobile environment.

The application relates to computer technologies and discloses a method and device for detection of a malignant document. The method and device are used to increase detection accuracy of WEBSHELL. The method comprises the steps that a stain mark is set for a key parameter; the key parameter is then taken as an input parameter to execute a target script document; and through Hook of a key function in the target script document, whether the key parameter with the set spot mark is used during key function execution can be judged. In this way, whether deformed WEBSHELL exists in the target script document can be judged. Hence, running keys of the WEBSHELL can be grasped from the essence of the WEBSHELL; no matter how the WEBSHELL gets deformed, the WEBSHELL can be detected accurately; detection accuracy and detection efficiency are increased effectively; leak detection and wrong reporting are avoided; and meanwhile, detection complexity and later-stage running maintenance cost are also reduced.

The invention provides an information determination method and device, a corresponding relation determination method and device, equipment and a medium. The information determination method comprisesthe following steps: determining second information according to first information, wherein the first information comprises at least one of the following information: a time domain parameter of a search space, a CORESET group, a CORESET set, the number of CORESETs, the number of frequency domain bandwidths, a frequency domain bandwidth group, a PUCCH resource group, a first type beam failure recovery parameter, signaling information and a predetermined rule; and the second information comprises at least one of the following parameters: a second type of beam failure recovery parameter, a wireless link reference signal, a frequency domain bandwidth corresponding to MAC-CE signaling, a PUCCH resource corresponding to the MAC-CE signaling, and a quasi co-location parameter of a downlink channel or a signal.

The invention discloses a low-detection complexity full-rate wireless cooperative relay transmission scheme and is applied to a distributed wireless communication system employing an orthogonal frequency division multiplexing (OFDM) technology. The scheme is that: data to be transmitted of a source node is subjected to reasonable complex domain encoding in a frequency domain so as to obtain a full-diversity gain of the distributed wireless system and enhance channel fading resistance of signals in the cooperative relay transmission process; the encoded data is divided into two parts, is subjected to OFDM modulation and is transmitted by the source node in two adjacent time slots in turn; a relay node receives a first part of data from the source node in a first time slot and transmits the first part of data to a destination node in a second time slot by employing a cycle delay amplifying and forwarding mode; and a receiving end can finish decoding by only performing joint detection on two symbols through comprehensive processing of the received signals in the two time slots. The provided relay transmission scheme is simple in encoding structure, is applied to scenes with free number of relay antennae, can achieve full-diversity gain performance and obviously reduce the detection complexity, and has higher practical value compared with a relay scheme pursuing the transmission rate or error code performance only.

The invention discloses a method for shot boundary detection, comprising the following steps: A1, calculating a within-class discrete degree matrix S1 of a sample set V1 and a within-class discrete degree matrix S2 of a sample set V2, and calculating the total within-class discrete degree matrix Sw, wherein the Sw = S1 + S2; and then calculating the discrete degree matrix Sb between the classe V1and the classe V2, wherein the Sb=(m1-m2)(m1-m2)T; A2, establishing a shearing detection formula and carrying out shearing detection; and A3, establishing a gradually changed detection formula and carrying out gradually changed detection. Aiming at the prior algorithm, the shortages of the detection are gradually changed by using different characteristic quantity and different judging formulae after the shearing detection is performed; and in the invention, the gradually changed detection can be conveniently carried out just by using slightly modifying the Fisher judging formula in changing without using and calculating characteristic quantity nor without using a new judging formula when in gradually changed detection, therefore, the detection difficulty and complexity are reduced. Moreover, in lens shearing and gradually changed detection, a characteristic curve extremum method is used for replacing the traditional threshold value method, so that the defect of bad adaptability of the threshold value method is avoided.

The invention discloses a cooperative spectrum detection method based on Cholesky matrix decomposition and an eigenvalue. The cooperative spectrum detection method mainly solves the problem that the detection threshold of an existing cooperative spectrum detection method based on the eigenvalue cannot be easily determined. The method comprises the implementation steps that (1) detection users collect data of frequency bands according to the frequency bands to be detected, and upload the data to a processing center; (2) the processing center builds a normalization covariance matrix according to the data uploaded to the processing center, and carries out Cholesky decomposition on the normalization covariance matrix; (3) detection statistics are calculated by using the decomposition result, and the probability distribution of the detection statistics is analyzed; (4) a judgment threshold under a target false alarm probability is calculated according to the probability distribution of the detection statistics; (5) the processing center compares the detection statistics and the detection threshold, and judges whether a main user signal exists or not. The cooperative spectrum detection method based on Cholesky matrix decomposition and the eigenvalue has the advantages of being accurate in detection threshold and high in detection performance, and can be used for wireless communication.

The invention discloses a preamble sequence detection method and device. The detection method comprises the steps of calculating a power of a signal input at a time point n according to time domain sample point signals of I / Q paths of a baseband received at the time point n; calculating a signal phase at the time point n; calculating a signal instantaneous frequency at the time point n; calculating an autocorrelation value of a signal instantaneous frequency vector at the time point n; determining whether the autocorrelation value exceeds a noise threshold or an autocorrelation peak value, and collecting statistics about peak count value; determining whether the peak count value is greater than a preset threshold, if the peak count value is greater than the preset threshold, determining that the peak value is found, and confirming that the preamble sequence is detected. Compared with the existing cross-correlation operation detection method, the method solves the problems of high detection complexity and high detection power consumption, and realizes the technical effects of lowering the detection complexity and improving detection efficiency.

The invention discloses a synchronizing process method, which is used to solve the problem in the prior art that when a single PSC is used, P-SCH channel estimation can not be matched with an actual unicast channel, so a coherent detection is not supported, and when a plurality of PSCs are used, the energy of multi-cells can not be strengthened, so a synchronizing detection becomes difficult. The method comprises that: the serial PSC used by a main synchronizing channel P-SCH is mapped to a sub-carrier of an OFDM symbol, wherein, the first part of P-SCH in each frame uses a public PSC to map, the second part of P-SCH can select one PSC from a plurality of PSCs to map; time domain OFDM symbols are formed according to all sub-carriers of various frames and transmitted. Meanwhile, the invention discloses a base station, user equipment and a communication system.

The invention relates to a keyless phase order tracking method for rotating speed fluctuation of a rotating machine. The method comprises the following steps of acquiring a vibration acceleration signal of the rotating machine; carrying out discrete short-time Fourier transform to obtain a time-frequency expression; estimating an initial time-frequency ridge line of the time-frequency expression through a double-side rapid ridge line extraction method; through a variational nonlinear frequency modulation mode decomposition method, according to the vibration acceleration signal and the initial time-frequency ridge line, extracting a signal dynamic characteristic; carrying out Hilbert transform and unwinding calculation on the dynamic characteristics of the signal to obtain an instantaneous phase curve of a modal component, and then carrying out equal-angle resampling to obtain an angular domain signal; and windowing the angular domain signal, converting the angular domain signal into an order domain by using discrete Fourier transform, and carrying out spectrum analysis and realizing fault diagnosis. Compared with the prior art, the method can eliminate the adverse effect of frequency spectrum fuzziness caused by the change of the rotating speed without the help of hardware equipment such as a key phase trigger, and effectively carries out signal processing and fault diagnosis on the rotating machine with a remarkable variable-rotating-speed working condition.

The invention discloses an information processing method and wearable equipment. The information processing method comprises the following steps: obtaining a current signal corresponding to a current relative position between a first induction module and a second induction module in the wearable equipment, wherein the first induction module and the second induction module are independently arranged on a first position of the wearable equipment and a second position different from the first position; judging whether the current signal meets a first preset condition or not; and determining that the current state of the wearable equipment is a worn state when the current signal meets the first preset condition. Through the technical scheme provided by the method and the wearable equipment, the technical problem that in the prior art, the detection process of the wearing state of the wearable equipment is complex is solved.

The invention provides sending and receiving methods, sending and receiving devices and a transmission system for a synchronizing signal. The sending method comprises the following steps that a base station determines one or more sets of system parameters, wherein each set of system parameters include frequency information of a carrier frequency and / or frame structure parameters of the carrier frequency; the base station constructs the synchronizing signal of a predetermined structure according to the system parameters; and the base station sends the synchronizing signal to a terminal, whereinone or more sets of system parameters are corresponding to the same predetermined structure. Through the sending and receiving methods, the sending and receiving devices and the transmission system for the synchronizing signal, a problem of high complexity during detection of the synchronizing signal in the prior art is solved.

The invention discloses an efficient, high-performance and low-complexity orthogonal frequency-division multiplexing index modulation (OFDM-IM) transmission method, which is a subcarrier mapping method combining bit-padding and dual-mode modulation on the basis of a traditional OFDM-IM combined method, wherein the method not only comprises all sub-carrier combinations, but also has dual mode characteristics, so that the method is an efficient transmission scheme. The scheme of the invention also uses the interweaving technology and the hard-limiting technology to improve the bit error rate performance of a system and reduce the detection complexity of modulation symbols, and the scheme is an efficient, high-performance and low-complexity OFDM-IM transmission scheme.

The invention discloses a detection method and apparatus for DCI. The method comprises: indication DCI issued by a base station is received, wherein the indication DCI carries the number of to-be-detected services and / or aggregation degree of the to-be-detected services; and according to the number of to-be-detected services and / or aggregation degree of the to-be-detected services, DCI corresponding to the to-be-detected services is detected. According to the invention, a problem of complicated detection due to lack of understanding of the number of services and aggregation degree during the DCI detection process of a plurality of services according to correlated technologies can be solved; and detection is carried out according to the content of the indication DCI, so that the detection complexity is reduced.

The present invention relates to a MMSE-based MLSE simplified detection method and its device, which are applied in a single-carrier system, wherein the method includes: generating a preliminary judgment sequence from a user signal according to a channel estimation value and the minimum mean square error MMSE criterion; The initial judgment sequence is expanded around to form a set of sequences to be judged; the set is traversed, and the sequence with the maximum likelihood of the user signal is selected as the detection result according to the maximum likelihood criterion; wherein, the device detects in the block ML Before the detector (32), an MMSE detector (31) is also provided for preprocessing. This method and its device greatly reduce the complexity of the MLSE algorithm, while the performance is superior to the MMSE algorithm. On the basis of ensuring a certain performance gain, the complexity is greatly reduced at the cost of a small amount of performance, making the simplified detection method And devices have the same requirements on hardware and processing capabilities, so it is convenient for practical application.