The output sequences of them also have strong auto correlation and weak cross correlation by computer, so when the code length is fixed, they can afford to more code word.
通过计算机仿真还发现它们均具有尖锐的自相关特性和弱的互相关特性，从而在码长固定的前提下，它们可提供较多的码字。
The Hamming distance is used in telecommunication to count the number of flipped bits in a fixed-length binary word, an estimate of error, and so is sometimes called the signal distance.
汉明距离可以在通信中累计定长二进制字中发生翻转的错误数据位，所以它也被称为信号距离。
The entropy coding methods which adopted fixed code table and probability model are improved to adaptive context-based alterable word length coding.
熵编码由固定的码表和概率模型改进为自适应的基于上下文的变字长编码。
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