线性分组不等保护码的距离特性研究

Study on the Distance Characteristic of Linear Unequal Error Protection Code

线性不等保护码能够为分组码矢量中的特定信息位提供更高的纠错能力,这种性能与码空间的距离特性密切相关。该文借助近世代数理论,从分离矢量和特征距离矢量这两个重要参数来讨论码空间的距离特性,并给出了不等保护码保护能力和码空间距离的关系。此外,通过对距离特性的分析,可以从某些已知码构造出符合要求的不等保护码。

Linear Unequal Error Protection Code provides different protection for certain bits in a block code.This ability comes from the code＇s distance characteristic.Using the results in modem algebra,this paper studies the distance characteristic in two aspects：separation vector and distance vector.From these principles the？ paper deduces the relationships between the protection ability of LUEP code and the code＇s distance characteristic.By analyzing LUEP code＇s distance characteristic,we can form certain LUEP code from general code.