BCH纠错编码是线性分组码的一种，有较好的纠错能力，信息隐藏是近年来信息安全领域出现的新技术。
BCH codes are a subset of the class of linear block codes that have good error correction capability. Information hiding is a new technique in information security field.
矩阵或H矩阵可以进行线性分组码的编码和译码。
G matrix or H matrix can be linear block code encoding and decoding.
全文共分三部分：分组码的编码、分组码的译码以及卷积码。
This paper consists of three parts: encode and decode of the block codes and the convolutional codes.
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