6results about "Error correction/detection using block single space coding" patented technology

This invention relates to a codeword bit interleaving scheme for multi-layer transmission in a wireless communication system. The codeword bit interleaving scheme involves dividing the columns of an interleaving matrix into at least two separate column groups based on the transmission quality (e.g., SNR) of the data transmission layer (e.g., MIMO layer). Then, starting with writing information bits into the column group corresponding to the high-quality data transmission layer, the column group is filled with codeword bits. Afterwards, all column groups are merged to restore the initial column arrangement of the interleaving matrix, and codeword bits are read row by row from the interleaving matrix and mapped to modulation symbols. The modulation symbols are then mapped to the data transmission layer itself. By doing so, the information bits of the codewords can be allocated to the high-quality data transmission layer, thereby improving decoding performance.

A polar code encoding method and an apparatus are provided and relate to the field of communication technologies, to enable polar codes to be constructed based on a same reliability sequence and a same first matrix for sequences of different quantities of information bits, thereby reducing hardware complexity and improving decoding performance. The method includes: mapping, based on a reliability sequence whose length is N, an information bit sequence whose length is k to k bits of a first sequence whose length is N, to obtain a second sequence including k information bit positions, x PC bit positions, and N-k-x frozen bit positions; multiplying the second sequence by a first matrix to obtain a third sequence; and performing polar encoding to obtain a fourth sequence, where k≤K≤N, 1≤x, K is a maximum value of the length of the information bit sequence, k, K, N, and x are all positive integers, there are all 0s below a diagonal of the first matrix, and all 1s on the diagonal, a column weight of a column corresponding to the PC bit position in the first matrix is greater than 1, a column weight of a column corresponding to the frozen bit position or the information bit position is equal to 1, and a quantity of columns whose column weights are greater than 1 is less than or equal to N-K.

Streams of data encoded by a plurality of OFEC encoders are merged and allocated among a plurality of optical subcarriers of an optical communication system having two polarization channels. Methods and apparatus are provided for performing the merging and allocating such that for each OFEC encoder of said OFEC encoder plurality, a same number of bits of encoded data is allocated to each subcarrier of the subcarrier plurality, and a same number of bits of encoded data is allocated to each of the two polarization channels.

Aspects of the disclosure are directed to techniques for wireless communication, and specifically, to methods for interleaving and deinterleaving wireless data. In some examples, a wireless node may encode a plurality of bits to yield encoded bits. In some examples, the wireless node may interleave: (i) a first subset of one or more encoded bits via a first interleaving scheme, and (ii) a second subset of one or more encoded bits via a second interleaving scheme, wherein the one or more encoded bits of the second subset are different from the one or more encoded bits of the first subset. In some examples, the wireless node may map: (i) the interleaved first subset to a first bit level, and (ii) the interleaved second subset to a second bit level.

Embodiments of this application provide a data processing method and a data processing apparatus, to use FEC encoding in combination with a PCS technology to satisfy a requirement for a longer transmission distance. Specifically, PCS processing is performed on a first bit set in k bits, to obtain a second bit set, where k is an integer greater than 1. FEC encoding is performed on the second bit set and a third bit set in the k bits excluding the first bit set, to obtain a fourth bit set. The fourth bit set includes m0 first bit subsets, each of the first bit subsets includes F0 bits, m0 is an integer greater than 1, and F0 is an even number greater than 1. First interleaving processing is performed on the fourth bit set to obtain a fifth bit set. The fifth bit set includes m0 second bit subsets, each of the second bit subsets includes F0 bits, F0 / 2 bits in each of the second bit subsets are from the second bit set, and the other F0 / 2 bits in each of the second bit subsets are from the third bit set and / or parity bits of the FEC encoding.

Streams of data encoded by a plurality of OFEC encoders are merged and allocated among a plurality of optical subcarriers of an optical communication system having two polarization channels. Methods and apparatus are provided for performing the merging and allocating such that for each OFEC encoder of said OFEC encoder plurality, a same number of bits of encoded data is allocated to each subcarrier of the subcarrier plurality, and a same number of bits of encoded data is allocated to each of the two polarization channels.