Based on the defining vector of binary linear code,new concept of generalized anti-code of a giv-en code is introduced into this paper,and the defining vector of a generalized anti-code is described by the given code.The parameters of a generalized anti-code are utilized for determining corresponding binary op-timal code.It is proved that 11 classes of binary optimal codes are not LCD codes.And such method breaks through the limitations of the current methods,and provides a new theory and a new method for study of LCD parameters determination and structure.
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