16results about How to "Improve decoding success rate" patented technology

The invention provides a wireless communication method, terminal equipment and network equipment. The method comprises: a terminal device receiving first indication information sent by a network device, the first indication information being used for indicating whether the terminal device is allowed to multiplex uplink control information (UCI) in a physical uplink control channel (PUCCH) to a physical uplink shared channel (PUSCH) for transmission within a first time period of an orthogonal cover code (OCC) period. In the embodiments of the present application, a network device sends first indication information to a terminal device to indicate whether the terminal device is allowed to multiplex UCI in a PUCCH to PUSCH transmission in a first time period of an OCC period. Compared with a traditional UCI multiplexing rule, the terminal equipment can report the UCI in the OCC period based on the first indication information, the network equipment can decode the received information sequence based on the first indication information (for example, different decoding strategies are adopted for the terminal equipment corresponding to different first indication information), and the decoding success rate can be improved.

This application provides an uplink transmission method and an apparatus. The method includes: A network device indicates a terminal device to send a first transport block in a plurality of time units, and further indicates the terminal device to send uplink control information UCI in a first time unit. The first time unit is one of the plurality of time units. Regardless of whether the terminal device detects that the network device indicates the terminal device to send the UCI, both the network device and the terminal device calculate, based on a parameter G corresponding to the first time unit, a location of a starting bit in a coded bit sequence that is output through rate matching in a second time unit. The second time unit is a next time unit of the first time unit in the plurality of time units, and the parameter G is a total quantity of coded bits available for transmission of the first transport block and the UCI in one time unit. Therefore, starting from the second time unit, the network device and the terminal device can align locations of starting bits in bit selection in each rate matching, thereby increasing a decoding success rate.

The invention provides a signal decoding method and system, a computer readable storage medium, electronic equipment and a computer program product, and relates to the technical field of communication, and the method comprises the steps: obtaining a received signal, and carrying out the modulation and demodulation of the received signal, and obtaining soft bit information; the received signal is a signal generated through finite field linear block code coding and low-density parity check coding cascade coding; performing belief propagation iterative decoding of new air interface low-density parity check on the soft bit information to obtain a code word corresponding to a low-density parity check mother code; performing bit flipping hard decision decoding on the codeword corresponding to the low-density parity check mother code to obtain a finite field linear block code codeword; and performing finite field linear block code hard decision decoding on the finite field linear block code codeword to obtain information bits after receiving signal decoding. According to the method, the success rate of finite field linear block code hard decision decoding can be increased, an error code platform in a short code scene is remarkably reduced, and decoding time delay is effectively reduced.

This invention discloses a barcode detection and recognition method and apparatus, comprising: acquiring a barcode image; acquiring a first binarized image of the barcode image based on global binarization; recognizing the barcode image based on the first binarized image and barcode localization to obtain a first recognition result; when the recognition result is recognition failure, acquiring the location of the decoding failure module; acquiring a target region of the barcode image based on the location of the decoding failure module and a preset window; performing local binarization on the target region to obtain a second binarized image, and acquiring the bar width information of the decoding failure module based on barcode characteristics, preset search rules, and the second binarized image; recognizing the barcode image based on the bar width information and the first binarized image to obtain a second recognition result. This invention improves the decoding success rate when dealing with incomplete or irregular barcodes by locating the target region and combining barcode characteristics and preset rules to infer and repair bar width information.

A non-orthogonal semi-unlicensed adaptive transmission method for low-Earth orbit (LEO) satellite communication includes: simultaneously selecting scheduled licensed users and selected unlicensed users according to preset scheduling rules; comparing the channel gain of the licensed users with a preset transmission strategy decision threshold value, and selecting transmission strategy A or transmission strategy B; if transmission strategy A is executed: adjusting the transmission power of each user according to the power allocation method specified in transmission strategy A, and simultaneously uploading their respective signals to the LEO satellite using an uplink non-orthogonal access method; the LEO satellite decoding order is to decode the licensed user signal first, and then decode the unlicensed user signal; if transmission strategy B is executed: adjusting the transmission power of each user according to the power allocation method specified in transmission strategy B, and simultaneously uploading their respective signals to the LEO satellite using an uplink non-orthogonal access method; the LEO satellite decoding order is to decode the unlicensed user signal first, and then decode the licensed user signal.

The present invention provides a drilling string and a sound-absorbing structure, the drilling string comprising: a pressure wave detection device, a drill collar and a drill bit connected in sequence from top to bottom, the drill collar is provided with a pulse generating device and a sound-absorbing structure, the pulse generating device and the sound-absorbing structure are distributed in sequence from top to bottom; the sound-absorbing structure comprises a damping sleeve, the damping sleeve is fixed to the inner wall of the drill collar, and the fluid in the drill collar can flow through the damping sleeve. Through the present invention, the technical problem that the pulse signal in the well is interfered by noise when it is transmitted upward, which makes it difficult for the ground system to resolve the pulse signal is alleviated.

The invention discloses a denoising system and method for drilling fluid pulse signals, and the system comprises a plurality of pressure sensors which are sequentially installed on the outer surface of a vertical pressure pipeline in the axial direction, and are used for collecting the drilling fluid pulse signals which are carried by drilling fluid and contain underground measurement data information in the drilling fluid circulation process, the vertical pressure pipeline is used for conveying drilling fluid which is pumped by the drilling pump and flows back to the ground to a wellhead from the drilling pump; the data processing device is used for determining signal propagation time delay between a master sensor and slave sensors except the master sensor in the plurality of pressure sensors, so that time delay compensation is carried out on drilling fluid pulse signals collected by the slave sensors, and the drilling fluid pulse signals subjected to time delay compensation are used for outputting the drilling fluid pulse signals. And noise signals in the drilling fluid pulse signals are removed. Noise signals in drilling fluid pulse signals are effectively removed, and accurate underground measurement data information can be obtained.

The invention relates to a current-limiting high-flash illumination system and image recognition equipment. The current-limiting high-flash illumination system comprises a current-limiting module, a boosting module, an energy storage module, a constant-current module and an exposure flash control module. The exposure flash control module comprises a main control chip, a lighting assembly and an image sensor. By limiting the preceding-stage current, the stability of the preceding-stage circuit and the preceding-stage circuit is ensured, the constant current during the illumination period and the consistency of the illumination brightness of LEDs in different bin regions are ensured through the constant current module, the image sensor and illumination are controlled to be synchronously turned on and off, and short-time illumination and exposure synchronization is realized. The short-time efficient illumination exposure is realized, the illumination duration is shortened, and image smear is avoided.

This invention relates to the field of QR code technology, specifically to a character code generation method, decoding method, and apparatus. The method includes: acquiring text to be encoded and converting it into information to be encoded through an encoding mode; creating a scanning area and filling the scanning area with target text, wherein the version of the scanning area is determined based on the size of the target text and the size of the information to be encoded; splitting the information to be encoded into one or more data modules; matching candidate filling positions for each data module by traversing the outline formed by the strokes of the target text according to the size of the split data modules; and filling each data module into its corresponding filling position after a successful match. This invention provides a QR code encoding and decoding method that can be recognized by both machines and the human eye. Each character has a fixed outline path formed by strokes, and by changing the control points on the outline to embed encoding information, machine recognition and human eye recognition are combined.

The present invention discloses a method, device and terminal for sending and receiving information, wherein the sending method comprises: sending a direct link synchronization signal block S-SSB, wherein the S-SSB comprises a physical direct link broadcast channel PSBCH scrambled by a scrambling sequence; wherein the scrambling sequence is determined according to at least one of the first information and the second information. The terminal of an embodiment of the present invention determines the scrambling sequence of the PSBCH according to at least one of the first information and the second information, and scrambles the PSBCH using the corresponding scrambling sequence, which can reduce mutual interference between different PSBCH channels in the direct link, improve the decoding success rate of the PSBCH, and thus reduce the synchronization delay of the terminal.

The data decoding method based on adaptive adjustment of QOS level provided by the present application has the following specific steps: the decoding configuration receiving module receives the decoding configuration information of each user in the current TTI; the decoding sorting module sorts the users from low to high based on the QOS priority level and inputs them into the decoding queue; the decoding control module obtains the data of each user in the decoding queue and performs decoding based on the maximum number of decoding iterations after dynamic update. The present application gives priority to decoding the data of users with low QOS level, and applies the time saved by stopping the decoding iteration of users with low QOS level in advance to the decoding of users with high QOS level, thereby improving the decoding success rate of users with high QOS level data while ensuring that the decoding operation meets the throughput requirements, thereby achieving the purpose of optimizing the system experience.

The present application discloses a data sending method, a receiving method, a communication device and a communication system, and relates to the field of communication technology. The data sending end can obtain first data based on the original information data to be sent, and use the first data to fill the initial information data including the original information data to obtain the target information data, and then send the data based on the target information data. The first data can be used for the data receiving end to decode and obtain the original information data. Since the method provided by the present application can fill the initial information data with useful information that can help the data receiving end to decode, compared with the method of filling 0 in the related art, it can effectively improve the utilization rate of network resources and reduce the waste of network resources.

The present invention discloses a low-cost ADS-B decoding method and device for unmanned aerial vehicles, including signal shaping, pulse time extraction, header identification extraction and ADS-B codeword extraction. The present invention performs ADS-B decoding through the steps of signal shaping, pulse time extraction, header identification extraction, ADS-B codeword extraction and the like. The ADS-B input signal is sent to a window comparator circuit after the DC component is filtered out by a DC blocking capacitor to obtain three groups of PWM signals; the three groups of PWM signals are input to a microprocessor pin to extract the pulse time, and the header identification extraction is performed according to the provisions of the ADS-B header waveform, and finally the ADS-B codeword is extracted. In the entire decoding process, only a low-cost operational amplifier and a microprocessor are needed to complete the decoding of the ADS-B signal, which simplifies the circuit, has a simple timing, and has a high decoding success rate, greatly reducing the cost of the ADS-B receiving device, and is particularly suitable for use on small, light and micro unmanned aerial vehicles.

This application provides an LDPC code error correction method, apparatus, electronic device, and storage medium. The method includes: after completing one round of iterative decoding of the current codeword of the LDPC code, determining whether the current codeword is in an oscillatory correctable state according to a preset oscillation correctability determination condition; when the current codeword is determined to be in an oscillatory correctable state, adjusting the preset parameters in the iterative decoding process by weighting and offsetting; after the adjustment is completed, continuing to perform the next round of iterative decoding on the current codeword until the current codeword is successfully decoded; obtaining the next codeword and repeating the above steps until all codewords in the oscillatory correctable state are successfully decoded. This application avoids the time overhead and resource consumption caused by restarting the post-processing flow after decoding failure, effectively reducing the error level, and has the advantages of short processing time, high bandwidth performance, and low hardware resource consumption.

The invention provides a digital isolator and electronic equipment. The digital isolator comprises a modulation circuit, a high-voltage isolation circuit and a demodulation circuit which are connected in series, the first end of the high-voltage isolation circuit and the modulation circuit are coupled to a first node, and the second end of the high-voltage isolation circuit and the demodulation circuit are coupled to a second node; the digital isolator further comprises a first common-mode transient anti-interference circuit coupled to the first node and / or a second common-mode transient anti-interference circuit coupled to the second node. Each of the first common-mode transient anti-interference circuit and the second common-mode transient anti-interference circuit comprises at least one common-mode transient anti-interference unit, and each common-mode transient anti-interference unit comprises a pair of diodes which are reversely connected in parallel. The digital isolator is simple in structure and easy to implement, and can effectively suppress the influence of common-mode transient interference on a signal link, so that the common-mode transient interference resistance of the digital isolator is improved, and the signal decoding success rate is remarkably improved.

The invention discloses a cast pipe end face two-dimensional code dynamic identification and warehouse payment automation system and method, and belongs to the technical field of industrial automation, and the system comprises a visual trigger positioning module, a multi-code reader networking identification module, a data processing module, a quantity verification module, an abnormity processing module, and a warehouse payment sheet generation module. According to the invention, through the networking design of multiple code readers, the industrial code readers are arranged according to the preset spatial layout to form an identification area covering the end face of the cast pipe with the full specification of DN300mm-DN1000mm, the cast pipes with different specifications can be adapted without adjusting the positions of the code readers, and the problem that the coverage range of the existing fixed code readers is limited is solved; meanwhile, real-time monitoring and accurate triggering of the in-place state of the mobile transportation equipment are achieved through the visual triggering positioning module, equipment parking is not needed, and the transportation efficiency and the recognition continuity of the cast pipe payment warehouse are improved.