4results about "Error correction/detection using arithmatic codes" patented technology

Methods, systems, and devices for wireless communications are described. The described techniques may enable a transmitting device to perform probabilistic shaping using an energy function that is independent of a modulation and coding scheme (MCS) used by the transmitting device. For example, the transmitting device may encode a set of information bits according to a probability distribution, the energy function, a symbol alphabet, and a shaping parameter. The transmitting device may generate a set of probabilities corresponding to the symbol alphabet based on an energy sequence computed using the energy function, where a quantity of terms in the energy sequence may be based on a shaping order. The transmitting device may indicate the shaping order to a receiving device.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitting node may obtain a k-bit sequence of information bits. The transmitting node may encode the k-bit sequence to an output sequence that corresponds to a length-n symbol sequence in a set of symbol sequences of length n and over an alphabet Am in accordance with a first phase of energy-based arithmetic coding for probabilistic amplitude shaping (PAS) and a second phase of energy-based arithmetic coding for PAS. The transmitting node may perform, to a receiving node, a transmission based at least in part on the length-n symbol sequence. Numerous other aspects are described.

A data processing method includes the following operations: separately performing convolutional interleaving on n lane data streams to obtain n first data streams, where n>1, and first FEC encoding is performed on all the n lane data streams. Every a codewords obtained through the first FEC encoding are distributed in b lane data streams, where a≤b≤n, and a≥1. z consecutive symbols in each of the first data streams are from z different codewords, and z>1. Then, every K first data streams of the n first data streams are multiplexed to obtain one second data stream, so as to obtain a total of m second data streams. The n first data streams include G first data stream subsets, symbols in different first data stream subsets are from different codewords, m=n / K, K>1, and G>1. y consecutive symbols in each second data stream are from y different codewords, where y>z.

A channel decoder for channel decoding at least one transmitted code word, comprising: a colorator for applying at least one coloration sequence to the at least one transmitted code word or to an error corrected at least one transmitted code word to obtain at least one colored code word, wherein the coloration sequence is such that at least one bit of the code word is changed by the application of the at least one coloration sequence, and wherein the at least one coloration sequence is associated to a certain decoding mode as a specific coloration sequence; a redundancy decoder for redundancy decoding the at least one colored code word to obtain a decoded output code word; and a decoding mode detector (26) for generating a decoding mode indicator indicating the certain decoding mode to be used by the redundancy decoder to obtain the decoded output code word, wherein the decoding mode indicator is associated to the at least one coloration sequence as the specific coloration sequence used for the coloration of the transmitted code word.