Abstract:
A communication method applied to the communication field, and in particular, to the short-range communication field, for example, an in-vehicle wireless communication system, a smart home system, or a smart manufacturing system, includes: a first node performing channel coding on at least one CB; and the first node sending, to a second node, the at least one CB on which channel coding has been performed, where the at least one CB is a CB of a first service.
Abstract:
A method includes: obtaining a total data length of an information bit; and obtaining C code blocks based on the total data length of the information bit and a preset first code rate. The C code blocks correspond to one or more code lengths, where the one or more code lengths meet a form of a positive integer power of 2, and where C is a positive integer.
Abstract:
Embodiments relate to the communications field, and provide an adaptive modulation and coding method, apparatus, and system. The method includes: obtaining to-be-processed data; obtaining channel information corresponding to the to-be-processed data, and determining a modulation mode according to the channel information. The method also includes determining first data and second data from the to-be-processed data according to the modulation mode; performing soft decision forward error correction FEC coding on the first data to obtain a first bit stream. The method also includes obtaining a second bit stream according to the second data, and modulating the first bit stream and the second bit stream according to a constellation mapping rule; and sending modulated data.
Abstract:
A sending device performs first encoding on at least one first code block, to obtain at least one first code word, where each first code block includes a first information block and a first check block for checking the first information block. The sending device performs at least one type of second encoding on at least one second code block, to obtain at least one second code word, where the at least one second code block includes a second check block for checking a portion of information in the at least one second code block, and a code length of the first code word is greater than a code length of the second code word. The sending device generates and sends a data packet that includes the at least one first code word and the at least one second code word.
Abstract:
An information transmission method and apparatus, applied to the communication field, and in particular, to the short-range communication field, for example, a vehicle-mounted wireless communication system are provided. The method includes: A first node receives a first MCS index from a second node. The first MCS index corresponds to a first modulation mode. The first node receives data from the second node or sends data to the second node based on the first MCS index. A first MCS information subset in which the first MCS index is located belongs to a predefined MCS information set including 32 MCS information subsets.
Abstract:
Embodiments of the present invention provide a decoding method and a decoding device. The method includes: performing iterative decoding on a multidimensional code to obtain incorrigible code words; determining locations of error bits in the incorrigible code words that are obtained by performing the iterative decoding on the multidimensional code, where the locations of error bits in the incorrigible code words are multidimensional coordinate locations of the error bits in the multidimensional code; correcting error bits of a part of the incorrigible code words in the multidimensional code according to the determined locations of the error bits in the incorrigible code words; and after the error bits of a part of the incorrigible code words in the multidimensional code are corrected, performing iterative decoding on the multidimensional code The embodiments of the present invention are applicable to the field of decoding technologies.
Abstract:
Disclosed are a communication method and apparatus applied to the field of communication technologies. The method includes: processing a first transport block (TB) in a target check code addition manner in a plurality of check code addition manners, to obtain first data, where the first data includes M code blocks (CBs), and M is a positive integer; generating at least one codeword based on the M code blocks; and sending the at least one codeword. Correspondingly, a communication system, a computer-readable storage medium, and a computer program are further provided. According to this application, transmission performance can be improved, and data transmission efficiency can be improved.
Abstract:
Embodiments relate to the communications field, and provide an adaptive modulation and coding method, apparatus, and system. The method includes: obtaining to-be-processed data; obtaining channel information corresponding to the to-be-processed data, and determining a modulation mode according to the channel information. The method also includes determining first data and second data from the to-be-processed data according to the modulation mode; performing soft decision forward error correction FEC coding on the first data to obtain a first bit stream. The method also includes obtaining a second bit stream according to the second data, and modulating the first bit stream and the second bit stream according to a constellation mapping rule; and sending modulated data.