{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8488648","patent":{"patent_number":"US-8488648","title":"Apparatus and method for symbol error correctable modulation and demodulation using frequency selective baseband","assignee":null,"inventors":[],"filing_date":"2008-04-28T00:00:00.000Z","publication_date":"2013-07-16T00:00:00.000Z","cpc_codes":["H04L","H04J","H04L"],"num_claims":13,"abstract":"Provided are a method and apparatus using a frequency selective baseband. Symbol-error correction modulation and demodulation is performed by generating a plurality of subgroups by dividing 2N spread codes or orthogonal codes used for frequency spreading into 2M (M<N) spread codes or orthogonal codes; selecting (P+L) subgroups; acquiring P spread codes by inputting M data bits to each of the selected P subgroups to select one spread code among the 2M spread codes of each subgroup; generating L*M parity bits for symbol error correction using P*M data bits inputted to the selected P subgroups; selecting one spread code among the 2M spread codes of the L subgroups by inputting the L*M parity bits to the L subgroups; and selecting the dominant values among the (P+L) spread codes acquired from the (P+L) subgroups to generate transmitting data including the dominant values, where N, M, P, and L are real numbers."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus and method for symbol error correctable modulation and demodulation using frequency selective baseband","description":"Provided are a method and apparatus using a frequency selective baseband. Symbol-error correction modulation and demodulation is performed by generating a plurality of subgroups by dividing 2N spread ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8488648","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-8488648","citation_suggestion":"Patentable. \"Apparatus and method for symbol error correctable modulation and demodulation using frequency selective baseband\" (US-8488648). https://patentable.app/patents/US-8488648","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8488648","json":"https://patentable.app/api/llm-context/US-8488648","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T22:11:40.359Z"}