20 results about "Systematic code" patented technology

Methods, systems, and devices for wireless communications are described. A user equipment (UE) generates multiple systematic bits for a message, where the systematic bits are nonuniformly distributed over a time period such that a first bit value has a first probability of occurrence during the time period and a second bit value has a second probability that is greater than the first probability of the occurrence. The UE modulates the systematic bits according to an asymmetric modulation rule such that the first bit value corresponds to a first constellation point on a constellation graph and the second bit value corresponds to a second constellation point that is relatively closer to a center of the constellation graph than the first constellation point based on the second probability being greater than the first probability. The UE transmits the message including systematic bits modulated according to the asymmetric modulation rule.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) generates multiple systematic bits for a message, where the systematic bits are nonuniformly distributed over a time period such that a first bit value has a first probability of occurrence during the time period and a second bit value has a second probability that is greater than the first probability of the occurrence. The UE modulates the systematic bits according to an asymmetric modulation rule such that the first bit value corresponds to a first constellation point on a constellation graph and the second bit value corresponds to a second constellation point that is relatively closer to a center of the constellation graph than the first constellation point based on the second probability being greater than the first probability. The UE transmits the message including systematic bits modulated according to the asymmetric modulation rule.

The invention provides a coding method and a communication device, mainly aims at a pre-transformation polar code, provides a plurality of modes for generating a pre-transformation code word based on a shift register, and can obtain better error correction performance of a PC-polar code. In addition, the processing modes of the message bit, the check bit and the frozen bit in the polar code are more uniform, and the description complexity is low. The output of the shift register not only supports the pre-transformed code word to be a non-system code, but also supports the pre-transformed code word to be a system code. The performance of the pre-transformation polar code is further improved through the combination of the shift registers in various forms, the tap number, the tap direction and the feedback mode.

Aspects of the disclosure relate to wireless communication utilizing a modulation and coding scheme that selectively or dynamically applies probabilistically-shaped coding (PCS) to modulate a transmitted waveform. A communication device may determine whether to apply PCS. If PCS is to be applied, the device can encode the message based on a systematic code; and if PCS is not to be applied, the device can encode the message based on a non-systematic code. Other aspects, embodiments, and features are also claimed and described.

A code processing system (100) is provided with an operating system (30) and a standby system (40). The operating system (30) and the standby system (40) are each configured so as to generate a multi-bit user code (12) when a code request from a user terminal (11) is received. The user code (12) includes a system code unique to a system (30, 40) that generates the user code (12) in a prescribed bit. The user code (12) generated by the working class system (30) is a working class code, and the user code (12) generated by the standby class system (40) is a standby class code. The code processing system (100) is configured so as to transmit, to a user terminal (11), either a working-class code or a standby-class code on the basis of error information in the working-class system (30).

The present invention relates to a method based on multimodal code generation and progressive delivery, which belongs to the field of code generation technology and natural language processing. The present invention builds a visual low-code development platform based on a basic template, which sets configuration data through a visual page; generates database model data based on the configuration data, and pregenerates basic code in combination with the basic template; inputs the generated basic code into a pre-trained PLBART model; uses the PLBART model to reason and complete the language syntax and semantics, and outputs executable code; pushes the executable code to a code warehouse, and automatically builds, tests, and packages the executable code; uses a grayscale release strategy to achieve grayscale release and progressive delivery; the present invention realizes systematic code generation through multi-modal data processing, organically combines grayscale release, and achieves progressive delivery, significantly improving development efficiency, code quality, and system reliability.

A coding method and apparatus are provided. The method includes: coding an information bit by using a preset generator matrix of a systematic (U|U+V)-code to obtain a codeword of a systematic code. The preset generator matrix of the systematic (U|U+V)-code includes a first identity sub-matrix of a U code and a second identity sub-matrix of a V code. A plurality of elements in a same column as the first identity sub-matrix are all 0. A plurality of elements in a same column as the second identity sub-matrix are all 0.

The present application provides an encoding method and a communication apparatus. A plurality of modes of generating a pre-transformed codeword on the basis of a shift register are provided for a pre-transformed polar (PC-polar) code, thereby achieving better error correction performance for the PC-polar code. In addition, modes for processing a message bit, a check bit, and a frozen bit in the polar code are more uniform, thereby achieving low description complexity. The output of the shift register not only supports the pre-transformed codeword as a non-system code, but also supports the pre-transformed codeword as a system code. The diverse combinations of the shift register, the number of taps, the directions of the taps, and feedback modes enable further performance enhancement of the PC-polar code.

The present application discloses a multi-rate convolutional code sequence decoder and decoding method, which relates to the field of communication decoding technology. The decoder includes: a data storage module, a branch metric module, a parallel processing module, a shift register, a convolutional coding module, and a main control module; receiving and storing a coding rate identification bit and data to be decoded in input data; selecting a non-systematic code generator according to the coding rate identification bit, performing convolution processing on the non-systematic code generator according to a preset number of shift data and the non-systematic code generator to obtain a convolutional code; obtaining the data to be decoded according to the non-systematic code generator, calculating a branch metric value according to the coding rate identification bit, the data to be decoded, and the convolutional code; determining a decoding result of the data to be decoded according to the branch metric value and the total metric value, and updating the total metric value; updating the shift data in the shift register according to the updated total metric value; and storing the shift data. The present invention can efficiently process input data and improve the overall data processing speed and efficiency.

The present invention provides a code processing system and a code processing method. [Solution] A code processing system comprising an active system and a switch configured to switch between the active system and a standby system, wherein each of the active system and the standby system is configured to generate a multi-digit identification code when it receives a code request from a user terminal, the identification code includes a system code unique to the system that generates the identification code in a specified number of digits, the identification code generated by the active system is the active system code, the identification code generated by the standby system is the standby system code, the switch is configured to switch the system that generates the identification code based on error information in the active system, and the code processing system is configured to transmit either the active system code or the standby system code to the user terminal.

The application discloses a kind of DNA storage in prior information VT code iterative decoding method, system and storage medium, it is related to DNA storage technical field.The method is first obtained systematic code word sequence by VT code, generates noisy reception sequence by ID model simulation channel transmission;Again, joint grid chart is constructed and initialized, and soft information and bit decision information are obtained by completing SISO decoding calculation, and channel parameters are updated based on MAP drift tracking;After convergence by iterative control, multiple independent estimated code words are obtained, and finally original information sequence is recovered by multi-sequence majority voting fusion.The application constructs decoding-estimation closed-loop iteration framework, does not need prior channel parameters, can adaptively learn channel characteristics, capture error hot spot, improve decoding robustness by combining multi-sequence fusion, realize original data high reliability recovery, and promote DNA storage practicality.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of a set of configured grant (CG) occasions that includes at least a first CG occasion and a second CG occasion, the set of CG occasions comprising uplink resources for periodic uplink transmissions. The UE may transmit a first code segment during the first CG occasion, wherein the first code segment is a systematic code segment representative of a first packet based on application of an outer code to the first packet, the first packet being a most recent packet of a plurality of packets obtained by the UE. The UE may transmit a second code segment during the second CG occasion, wherein the second code segment is a parity code segment that includes parity information based on application of the outer code to unexpired packet(s) of the plurality of packets.

The invention discloses a finite field multiple access system codebook construction method based on EP resource allocation, a minimum branch distance decoding method and a multiple access system, and belongs to the technical field of 6G communication. The problem of low reliability under a block fading channel is solved, and the problem of lack of a decoding method for superposed user information under a finite field in an uplink at present is solved. According to the invention, the codebook is constructed based on UR-EPA, the resources of the whole channel are utilized by allocating a plurality of EPs to a single bit, and the degree of freedom of the whole channel is fully utilized. The invention also designs a decoding method for superposed user information in a finite field, firstly, Turbo iteration is carried out between a basic signal estimator and a channel decoder to realize detection of information bits, and then detection is carried out by utilizing a parity check part based on complex field superposition and patterns, so that joint decoding of check bits is realized.

The invention belongs to the technical field of communication coding, and discloses a high error correction capability coding and decoding method and system based on Reed-Solomon code list decoding and algebraic manipulation codes, and the method comprises the steps: firstly coding a message with the length of r on a finite field by using a system AMD code, and obtaining a coding codeword; an RS code with a parameter of [n, r + 2] on a finite field is taken, and RS code coding is carried out on the obtained coding codeword; performing list decoding of the RS code with the list size of the received code word; and carrying out AMD code decoding on the code words in the list so as to correctly recover the original code words according to the probability. According to the method, the AMD code is introduced to code the information in advance, and the list decoding result of the RS code can be effectively and uniquely output at a high probability by combining the high error detection capability of the AMD code with the list decoding of the RS code. The unique decoding radius is effectively improved under high probability, and remarkable technical progress is realized.

The invention discloses an absorption shift keying molecular communication system and method based on a genetic algorithm codebook. The system comprises a model construction module, a codebook generation module and a signal demodulation module. The model construction module is used for constructing a molecular communication model under an absorption frequency shift keying architecture, and a sending end adopts an absorption frequency shift keying combined pulse position modulation as a hybrid modulation scheme of the molecular communication model; the codebook generation module is used for establishing a fitness function taking decoding error probability minimization as a target, optimizing a codebook through a genetic algorithm, and dynamically generating a system codebook adaptive to molecular channel characteristics; the signal demodulation module optimizes a molecular communication model based on a system codebook in combination with a two-step detector, and performs signal demodulation at a receiving end by using the optimized molecular communication model. The method is superior to an existing coding scheme, and the reliability of a molecular communication system under the condition that absorption frequency shift keying is combined with pulse position modulation under the constraint of an actual molecular channel is obviously improved.

This application provides a system code-based encryption method, apparatus, and device. The method includes: acquiring the total number of bits in the data to be encrypted and a preset transfer matrix; wherein the preset transfer matrix is ​​used to indicate the mapping relationship between the operation result of the system code division circuit in the first clock cycle, the operation result of the division circuit in the second clock cycle, and the characters in the data to be encrypted received by the division circuit in the first clock cycle; determining the remainder of the data to be encrypted based on the total number of bits, the data to be encrypted, and the preset transfer matrix; the remainder is used to indicate the remainder after performing a modulo operation between the data to be encrypted and the generator polynomial of the system code; and determining the system code encryption result of the data to be encrypted based on the remainder and the data to be encrypted. By acquiring the preset transfer matrix, the total number of bits in the data to be encrypted, and the data to be encrypted to determine the encryption result, the problem of the long time consumption in determining the remainder using a division circuit in related technologies can be avoided.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of a set of configured grant (CG) occasions that includes at least a first CG occasion and a second CG occasion, the set of CG occasions comprising uplink resources for periodic uplink transmissions. The UE may transmit a first code segment during the first CG occasion, wherein the first code segment is a systematic code segment representative of a first packet based on application of an outer code to the first packet, the first packet being a most recent packet of a plurality of packets obtained by the UE. The UE may transmit a second code segment during the second CG occasion, wherein the second code segment is a parity code segment that includes parity information based on application of the outer code to unexpired packet(s) of the plurality of packets.

The embodiment of the invention provides a code translation method and device, electronic equipment and a readable storage medium, and the method comprises the steps: determining a target translation rule corresponding to a target instruction for any target instruction based on instruction information corresponding to the target instruction under the condition that a to-be-translated code of a source platform contains the target instruction; the instruction information comprises a target instruction name and a target instruction parameter corresponding to the target instruction; and under the condition that the target translation rule contains a complex type of instruction conversion rule, calling a target translation function corresponding to the target instruction name, and performing instruction translation on the target instruction name and the target instruction parameter to obtain a target translation instruction. Therefore, the translation efficiency of the code translation process is improved, and meanwhile, the code translation accuracy is ensured through a systematic code translation mode.

The present disclosure provides self-decodable redundancy versions for a systematic code. An apparatus for wireless communications includes at least one processor coupled with a memory and comprising encoder circuitry configured to encode a set of information bits using a systematic code to generate an encoded bit stream with information bits and parity bits, and bit ordering circuitry configured to re-order bits in the encoded bit stream to distribute the information bits and the parity bits. The apparatus includes a transmitter configured to transmit the re-ordered bits in accordance with a radio technology via one or more antenna elements situated proximate the receiver.

The invention relates to a multi-modal code generation and progressive delivery method, and belongs to the field of code generation technology and natural language processing. According to the method, a visual low-code development platform is constructed based on a basic template, and configuration data is set through a visual page; generating database model data based on the configuration data, and pre-generating a basic code in combination with the basic template; inputting the generated basic code into a PLBART model obtained by pre-training; reasoning and complementing language grammar and semantics through a PLBART model, and outputting executable codes; the executable codes are pushed to a code warehouse, and the executable codes are automatically constructed, tested and packaged; gray release is realized by using a gray release strategy, and progressive delivery is realized; according to the method, systematic code generation is realized through multi-modal data processing, gray release is organically combined, progressive delivery is realized, and the development efficiency, the code quality and the system reliability are remarkably improved.