{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11956109","patent":{"patent_number":"US-11956109","title":"Low-computation underwater acoustic wake-up method based on multi-carrier signals","assignee":null,"inventors":[],"filing_date":"2022-03-31T00:00:00.000Z","publication_date":"2024-04-09T00:00:00.000Z","cpc_codes":["H04L","H04L","H04B","H04B","H04B","H04L","H04L","H04L"],"num_claims":3,"abstract":"A low-computation underwater acoustic wake-up method based on a multi-carrier signal is provided. A multi-carrier signal corresponding to communication nodes is constructed, absolute values of the multi-carrier signal in a window at a receiver are summed for signal arrival detection, and then frequency points of the multi-carrier signal are detected many times by using the real fast Fourier transform to realize wake-up detection. The method is suitable for accurate wake-up at any distance within a maximum communication distance of two underwater acoustic nodes, has a small amount of calculation, and is suitable for low-power single-chip microcomputers. The modem can be in a low-power sleep state for a long time."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Low-computation underwater acoustic wake-up method based on multi-carrier signals","description":"A low-computation underwater acoustic wake-up method based on a multi-carrier signal is provided. A multi-carrier signal corresponding to communication nodes is constructed, absolute values of the mul","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11956109","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-11956109","citation_suggestion":"Patentable. \"Low-computation underwater acoustic wake-up method based on multi-carrier signals\" (US-11956109). https://patentable.app/patents/US-11956109","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11956109","json":"https://patentable.app/api/llm-context/US-11956109","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T09:43:49.657Z"}