Method for detecting information bits processed by concatenated block codes
Patent 5563897 Issued on October 8, 1996. Estimated Expiration Date: 
November 18, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 18, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesError correction mechanism using pattern predictive error correction codes Patent #: 5181207 InventorsAssigneeApplicationNo. 345370 filed on 11/18/1994US Classes:714/755, Double encoding codes (e.g., product, concatenated)714/785Syndrome computedExaminersPrimary: Envall, Roy N. Jr.Assistant: Kundupoglu, Yoncha Attorney, Agent or FirmForeign Patent References
International ClassH03M 013/00Foreign Application Priority Data1993-11-19 FRAbstractThe transmitted bits are coded according to the product of at least two systematic block codes. An iterative decoding is applied in order to determine, at each code word search step, a data matrix and a decision matrix which are used for the following step. The new decision matrix is determined at each step by decoding the rows or the columns of the input matrix, and the new data matrix is determined by taking account of correction terms which increase the reliability of the decoding at each iteration. The method is especially suited for use with high-efficiency block codes.Other References
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