{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9825650","patent":{"patent_number":"US-9825650","title":"Decoder architecture for cyclically-coupled quasi-cyclic low-density parity-check codes","assignee":null,"inventors":[],"filing_date":"2015-08-13T00:00:00.000Z","publication_date":"2017-11-21T00:00:00.000Z","cpc_codes":["H04L","H04L"],"num_claims":9,"abstract":"This invention provides a cyclically-coupled (CC-) quasi-cyclic (QC-) low-density parity-check (LDPC) code and its decoder architecture. The essence of the invention is to introduce the convolutional nature to a plurality of individual block codes internally so as to form a resultant block code with a prolonged code length while slightly increasing the hardware complexity in decoder realization. The CC-QC-LDPC code is formed by cyclically coupling a plurality of sub-codes each being a QC-LDPC code such that overlapping of some variable nodes between two consecutive sub-codes results. The decoder comprises plural sub-decoders each configured to decode the channel messages for one sub-code. The sub-decoders are arranged in a ring shape such that an individual sub-decoder is configured to communicate edge messages with two neighboring sub-decoders adjacent to said individual sub-decoder in the decoding of the channel messages. The sub-decoders are configured to operate concurrently for simultaneously decoding individual sub-codes."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Decoder architecture for cyclically-coupled quasi-cyclic low-density parity-check codes","description":"This invention provides a cyclically-coupled (CC-) quasi-cyclic (QC-) low-density parity-check (LDPC) code and its decoder architecture. The essence of the invention is to introduce the convolutional ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9825650","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9825650","citation_suggestion":"Patentable. \"Decoder architecture for cyclically-coupled quasi-cyclic low-density parity-check codes\" (US-9825650). https://patentable.app/patents/US-9825650","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9825650","json":"https://patentable.app/api/llm-context/US-9825650","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T03:56:21.342Z"}