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首页> 美国政府科技报告 >Cyclic Unequal Error Protection Codes Constructed from Cyclic Codes of Composite Length.
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Cyclic Unequal Error Protection Codes Constructed from Cyclic Codes of Composite Length.

机译：复合长度循环码构造的循环不等差错保护码。

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The distance structure of cyclic codes of composite length was investigated. A lower bound on the minimum distance for this class of codes is derived. In many cases, the lower bound gives the true minimum distance of a code. Then the distance structure of the direct sum of two cyclic codes of composite length were investigated. It was shown that, under certain conditions, the direct-sum code provides two levels of error correcting capability, and hence is a two-level unequal error protection (UEP) code. Finally, a class of two-level UEP cyclic direct-sum codes and a decoding algorithm for a subclass of these codes are presented.

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