156results about "Error correction/detection using single space coding" patented technology

This disclosure provides methods, devices and systems for encoding data for wireless communication to achieve an amplitude distribution. One implementation includes a method in which probabilistic amplitude shaping is constrained by an energy value and a sequence composition. The implementation may include three phases. In a first phase, the energy value is determined. In a second phase, the sequence composition is determined. In a third phase, the output sequence is determined as constrained by the sequence composition. The methods generate output sequences defining amplitude symbols that are used to encode data for transmission.

At least one embodiment of the invention provides a data processing method, a data processing device and a data transmission system. The data processing method comprises the steps that coding operation is carried out based on original data to generate N independent error correction code words, each error correction code word in the N independent error correction code words comprises a data code and a check code, and N is an integer and is larger than or equal to 2; data codes and check codes included in the N independent error correction code words are interleaved to obtain interleaved data; and sending the interleaved data. According to the data processing method, the complexity of coding, decoding and error correction can be effectively reduced, the corresponding coding, decoding and error correction time is shortened, and the data transmission delay is reduced.

An optical receiver includes a receiving component, a log-likelihood ratio component, and a forward error correction decoder. The receiving component may be configured to receive a data transmission of transmitted data and convert a portion of the data transmission into one or more digital samples. The log-likelihood ratio component may be configured to generate a log-likelihood ratio value using a set of the one or more digital samples. The forward error correction decoder may be configured to correct errors in in the log-likelihood ratio value and recover the transmitted data using the log-likelihood ratio value.

Methods, systems, and devices for wireless communications are described. In some examples, a transmitting device, such as a user equipment (UE) or a network entity, may encode an information bit vector into multiple code blocks using a polar code partitioned into multiple sub-blocks having a same block length in accordance with a polar transformation associated with a modulation scheme. In some examples, each code block of the multiple code blocks may be encoded using a respective sub-block of the multiple sub-blocks. Additionally, the transmitting device may interleave respective bits of each code block of the multiple code blocks using a respective interleaver of multiple interleavers. As such, the transmitting device may transmit the respective interleaved bits of each code block of the multiple code blocks over a respective bit channel of multiple bit channels, where each bit channel of the multiple bit channels is associated with a respective reliability.

Methods, systems, and devices for wireless communications are described. In some examples, a transmitting device, such as a user equipment (UE) or a network entity, may encode an information bit vector into multiple code blocks using a polar code partitioned into multiple sub-blocks having a same block length in accordance with a polar transformation associated with a modulation scheme. In some examples, each code block of the multiple code blocks may be encoded using a respective sub-block of the multiple sub-blocks. Additionally, the transmitting device may interleave respective bits of each code block of the multiple code blocks using a respective interleaver of multiple interleavers. As such, the transmitting device may transmit the respective interleaved bits of each code block of the multiple code blocks over a respective bit channel of multiple bit channels, where each bit channel of the multiple bit channels is associated with a respective reliability.

The present invention provides a soft decision audio decoding system for maintaining audio continuity in a digital wireless audio receiver, which infers the likelihood of errors in a received digital signal based on generated hard bits and soft bits. The soft audio decoder can utilize the soft bits to determine whether the digital signal should be decoded or muted. The soft bits can be generated based on a detection point and detected noise power or by using a soft output Viterbi algorithm. The value of the soft bits can indicate the confidence in the strength of the hard bit generation. The soft decision audio decoding system can infer errors and decode perceptually acceptable audio without error detection as in conventional systems and has low latency and improved granularity.

At least one example embodiment provides a radio access network element comprising at least one processor and at least one memory. The at least one memory stores instructions that, when executed by the at least one processor, cause the radio access network element to: extract sign information from a plurality of log-likelihood ratio (LLR) sample values included in LLR data in a resource block group (RBG); convert negative LLR sample values, from among the plurality of LLR sample values, into positive integer values to obtain converted LLR data; generate compressed LLR data based on the converted LLR data; and output the compressed LLR data.

The invention discloses a data transmission method, device and system, relates to the technical field of optical communication, and is used for providing an internal code processing scheme suitable for various application scenes. In the embodiment of the invention, the optical module at the transmitting end can select one internal code processing mode from a plurality of internal code processing modes according to requirements and indicate the internal code processing mode to the optical module at the receiving end. The selected inner code processing mode can be indicated to the receiving end through the PAD sequence, extra resources are not needed, and the baud rate of the data stream is not changed. In some possible embodiments, the optical module of the receiving end can also detect the quality of the current link to select the internal code processing mode matched with the quality and feed back the internal code processing mode to the transmitting end, so that the transmitting end can switch the internal code processing mode according to the instruction. Besides, when the sending end selects to skip the execution of the internal code processing, the host can indicate the optical module to directly skip the execution of the internal code processing, and the receiving end can determine whether the internal code processing is skipped at present through rate detection.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure discloses a method and an apparatus for error correction coding in a communication system, more specifically, to error correction coding integrated with transmission diversity.

Embodiments of this disclosure provide methods, systems and apparatus for adaptive transport block size determination and code block segmentation. In the methods, segmenting the plurality of information bits to a plurality of code blocks may be based on a maximum code length and / or a maximum information block size. And then the plurality of code blocks may be encoded to a plurality of code words. The methods for adaptive transport block size determination and code block segmentation may be used in the scenarios that require a flexible code length or multiple code lengths. The methods may decrease the complexity of encoding and decoding and increase the performance.

To secure an excellent communication quality in a data transmission using an LDPC code.SOLUTION: In group-wise interleaving, an LDPC code having a code length N of 69120 bits is interleaved in units of bit groups of 360 bits. In group-wise deinterleaving, the group-wise interleaved LDPC code is restored to an original ordering thereof. The present technique can be applied to, for example, a case of data transmission using an LDPC code.SELECTED DRAWING: Figure 136

A data transmission method, apparatus and system, relating to the technical field of optical communications, for use in providing an internal code processing scheme suitable for various application scenarios. In embodiments of the present application, an optical module of a transmitting end can select an internal code processing mode from a plurality of internal code processing modes according to requirements, and indicate the internal code processing mode to an optical module of a receiving end. The selected internal code processing mode can be indicated to the receiving end by means of a PAD sequence without the need for additional resources, and without changing the baud rate of a data stream. In some possible embodiments, the optical module of the receiving end can also measure the quality of a current link to select an internal code processing mode matching the quality and feed back the internal code processing mode to the transmitting end, so that the transmitting end can switch the internal code processing mode on the basis of an indication. In addition, the transmitting end selects to skip execution of internal code processing, a host can instruct the optical module to directly skip the execution of the internal code processing, and the receiving end can determine, by means of rate detection, whether to skip the internal code processing currently.

Methods, systems, and devices for wireless communication are described. The first device can identify parameters for step coding. The first device can perform a step coding procedure on the information bits according to the parameter to generate coded bits. At a current step of the step coding procedure, the first device can cascade a first set of shaped bits with a first set of information bits to generate a second set of bits, perform a channel decoding procedure on the second set of bits to generate a second set of shaped bits for a subsequent step of the step coding procedure, an encoding procedure is performed on the third set of bits to generate a set of parity bits, and the third set of bits and the set of parity bits are mapped to a set of symbols to generate a fourth set of bits for the subsequent step.

A system includes a memory controller, multiple memories coupled to the memory controller, and multiple controlling components coupled to the memory controller. The memory controller calculates an error correction code (ECC) syndrome of a first type for a segment of data; stores the segment of data and the ECC syndrome of the first type in a first memory of the multiple memories; receives a request from a controlling component of the multiple controlling components directed to the segment of data, the controlling component implementing an ECC syndrome of a second type; transforms the ECC syndrome of the first type for the segment of data to the ECC syndrome of the second type; detects a number of errors, if any, present in the segment of data; and takes further action depending on how many errors are detected.

Certain aspects of the present disclosure provide a method for wireless communication by a transmitter. The method generally includes obtaining a first block of information bits from a buffer; generating a first sequence of probability amplitude shaping (PAS) symbols from the first block of information bits using a demapper function and an arithmetic decoder function; transmitting the first PAS symbol sequence to a receiver; combining a first subset of the first block of information bits identified by an arithmetic encoder function and a mapper function with a second block of information bits from the buffer; generating a second PAS symbol sequence from the combined first subset of the first block of information bits and the second block of information bits using the demapper function and the arithmetic decoder function; and transmitting the second PAS symbol sequence to the receiver.

Disclosed are an encoding method, a decoding method, and related devices designed to independently encode each of z second data streams without performing operations such as de-skewing and reordering, thereby reducing operational complexity and latency. The encoding method includes: obtaining m first data streams through m input channels, where m is a positive integer; processing the m first data streams to obtain z second data streams, where z is a positive integer; independently encoding each of the z second data streams to obtain z third data streams; and multiplexing the z third data streams to obtain n fourth data streams, where n is a positive integer.

Disclosed in the present application are a sphere decoding detection method and apparatus, and an electronic device and a readable storage medium. The method comprises: performing orthogonal triangular QR decomposition on a channel response matrix, so as to obtain a Q matrix and an R matrix, wherein columns in the Q matrix are arranged according to the magnitude of channel energy; according to the Q matrix and the R matrix, determining a target equalization signal; executing an ML path search process according to the target equalization signal, so as to select N branches with the minimum metric as survivor paths; performing an ML complement path search on the survivor paths, so as to obtain ML complement paths; and using the survivor path with the minimum metric as an ML path, and obtaining likelihood ratio information of each bit of each symbol of each layer according to the ML path and the ML complement paths.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may generate an encoding matrix including a set of information columns including systematic bits, a first set of core parity columns including a first set of parity bits, and one or more sets of extension parity columns including a second set of parity bits. The UE may puncture one or more of the systematic bits with the first set of parity bits, the second set of parity bits, or a combination thereof, based on an offset value indicating an initial column of the encoding matrix. The UE may encode an initial message in accordance with the encoding matrix based on the offset indicating the initial column of the encoding matrix.

The probability shaping coding circuit (1) includes an mth lookup table (11) for layer x+1 that converts an mth transmission bit sequence of layer x+1, which is composed of an mth transmission information bit sequence of layer x+1, which is a part of an information bit sequence to be communicated, and an mth transmission address bit sequence of layer x+1, into an mth transmission shaping bit sequence of layer x+1, where x, m, and n[x] are natural numbers (m=1, 2, . . . , n[x]), and a layer The communication system includes an mth distribution circuit (12) of x, a (2m-1)th lookup table (14) of layer x that generates a (2m-1)th transmission shaping bit sequence of layer x from the (2m-1)th source address bit sequence of layer x and the (2m-1)th transmission information bit sequence of layer x, which is a part of the information bit sequence of the communication target, and a 2mth lookup table (15) of layer x that generates a 2mth transmission shaping bit sequence of layer x from the 2mth source address bit sequence of layer x and the 2mth transmission information bit sequence of layer x, which is a part of the information bit sequence of the communication target. The lookup tables are arranged hierarchically in a tree structure, and each source address bit sequence obtained by the m-th distribution circuit (12) of layer x corresponds to designation information specifying a combination of signal points in a signal space managed by each of the plurality of lookup tables of layer x, and each transmission shaping bit sequence generated by the (2m-1)-th lookup table (14) of layer x and the 2m-th lookup table (15) of layer x corresponds to designation information specifying a combination of signal points in a signal space managed by each of the plurality of lookup tables of the immediately lower hierarchical level, or signal point information indicating a signal point arrangement in the signal space.

An optical receiver includes a receiving component, a log-likelihood ratio component, and a forward error correction decoder. The receiving component may be configured to receive a data transmission of transmitted data and convert a portion of the data transmission into one or more digital samples. The log-likelihood ratio component may be configured to generate a log-likelihood ratio value using a set of the one or more digital samples. The forward error correction decoder may be configured to correct errors in in the log-likelihood ratio value and recover the transmitted data using the log-likelihood ratio value.

This application provides a communication method and apparatus. The method includes: encoding a to-betransmitted first bit sequence to obtain a first matrix, where the first matrix includes a plurality of bit square matrices of a same size, and each bit square matrix includes a plurality of pieces of bit data; performing, based on a first mapping relationship, position transformation in a range of each bit square matrix on the bit data of each bit square matrix in the first matrix, to obtain a second matrix after the position transformation; and performing bit data position transformation among bit square matrices on the second matrix to obtain a third matrix, and modulating a to-be-sent first symbol sequence based on the third matrix. A row transformation mapping relationship in the first mapping relationship indicates a row identifier mapping relationship before and after position transformation of the bit data in the bit square matrix range. The row transformation mapping relationship may be constrained by using a global offset constraint factor and at least two local offset constraint factors. Aburst tolerance capability of information transmission can be improved.

An encoding method includes: obtaining m lanes of first data streams through m input lanes, where m is a positive integer; processing the m lanes of first data streams to obtain z lanes of second data streams, where z is a positive integer; separately performing encoding processing on each of the z lanes of second data streams to obtain z lanes of third data streams; and performing multiplex processing on the z lanes of third data streams to obtain n lanes of fourth data streams, where n is a positive integer.

At least one example embodiment provides a radio access network element comprising at least one processor and at least one memory. The at least one memory stores instructions that, when executed by the at least one processor, cause the radio access network element to: extract sign information from a plurality of log-likelihood ratio (LLR) sample values included in LLR data in a resource block group (RBG); convert negative LLR sample values, from among the plurality of LLR sample values, into positive integer values to obtain converted LLR data; generate compressed LLR data based on the converted LLR data; and output the compressed LLR data.

A data transmission method, an apparatus, and a system are provided. An optical device of a transmitter may select one inner-code processing mode from a plurality of inner-code processing modes based on a requirement, and indicate the inner-code processing mode to an optical module of a receiver. The selected inner-code processing mode may be indicated to the receiver by using a PAD sequence, without requiring an additional resource and without changing a baud rate of a data stream. The optical device of the receiver may also detect quality of a current link, to select an inner-code processing mode that matches the quality, and feed back the inner-code processing mode to the transmitter, so that the transmitter can switch the inner-code processing mode based on an indication.

An encoding method, a decoding method and related apparatus are disclosed for separately performing an encoding process on each of the second data streams of z lanes without performing operations such as deskewing and reordering, which reduces operational complexity and delay. The encoding method includes the steps of obtaining a first data stream of m lanes through m input lanes, where m is a positive integer, processing the first data stream of m lanes to obtain a second data stream of z lanes, where z is a positive integer, separately performing an encoding process on each of the second data streams of z lanes to obtain a third data stream of z lanes, and performing a multiplexing process on the third data stream of z lanes to obtain a fourth data stream of n lanes, where n is a positive integer.

An error correction decoding device that decodes a multi-level modulation symbol in which the number of dimensions is D (D is an integer equal to or more than 1) and the number of bits per dimension is M (M is an integer equal to or more than 2) from each of D pulse amplitude modulation symbols is configured. The error correction decoding device includes a soft decision unit (1) to acquire each of the pulse amplitude modulation symbols from a communication symbol sequence in which the D pulse amplitude modulation symbols are arranged, calculate a first hard decision bit indicating positive and negative of a log posterior probability ratio of each of M bits included in the multi-level modulation symbol from each of the pulse amplitude modulation symbols, and calculate an absolute value of each of log posterior probability ratios as a first reliability, and an exclusive OR operating unit (2) to operate an exclusive OR of D × M first hard decision bits calculated by the soft decision unit (1). In addition, the error correction decoding device includes a reliability selecting unit (3) to perform comparison of D × M first reliabilities calculated by the soft decision unit (1) with each other, select one first reliability from the D × M first reliabilities on the basis of a result of the comparison, and output the one first reliability as a second reliability, and a soft decision error correction decoding unit (4) to perform soft decision error correction decoding on an operation result of the exclusive OR by the exclusive OR operating unit (2) and the second reliability.