首页>
外国专利>
METHOD FOR DECODING UNRELIABLE CODE WORD AND SYSTEM FOR DECODING UNRELIABLE WORD FOR LINEAR BLOCK ERROR CORRECTION CODE
METHOD FOR DECODING UNRELIABLE CODE WORD AND SYSTEM FOR DECODING UNRELIABLE WORD FOR LINEAR BLOCK ERROR CORRECTION CODE
展开▼
机译:线性块错误纠正码的不相关码字的译码方法和不相关字的译码系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
PROBLEM TO BE SOLVED: To economize hardware and accelerate operation as a whole by decoding an unreliable code word with a decoder having reliability standards being common to each symbol of a code word and decoding an unreliable code word with a 2nd decoder using a proprietary reliability value for each symbol of an unreliable code word when useful results are not obtained. ;SOLUTION: A hard decoder 32 generates an error pattern from an unreliable word c (J) and gives it to an error pattern reliability calculation circuit 34. Decision logic 33 counts the number of given errors in outputs from the decoder 32 by a circuit 36, and a selector circuit 40 selects one among plural reliability thresholds on the basis of the calculated number of errors. These thresholds are decided by a reliability threshold processor 38. The thresholds are selected by the selector 40 in every unreliable code word and compared with an error pattern reliability output S (42).;COPYRIGHT: (C)2000,JPO
展开▼