{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8537713","patent":{"patent_number":"US-8537713","title":"Carrier frequency acquisition method and apparatus having improved reliability for detecting carrier acquisition or loss thereof","assignee":null,"inventors":[],"filing_date":"2011-11-21T00:00:00.000Z","publication_date":"2013-09-17T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L"],"num_claims":28,"abstract":"A carrier signal acquisition technique is disclosed. An improved course carrier frequency offset algorithm is employed in conjunction with a conventional fine carrier frequency offset algorithm. The course carrier frequency offset algorithm estimates large offsets that are multiples of the carrier spacing that may occur at system startup. A spectral null is placed in the center of the transmit spectrum and is thereafter located in a received signal. The position of the spectral null provides an estimate of the local oscillator carrier offset. A frequency finite state machine (FSM) processes a number of metrics to ensure the reliability of the course carrier frequency offset and of transitions between acquisition and tracking modes. The frequency FSM will utilize the frequency offset (modin) generated by a MODSC algorithm provided one or more predefined thresholds are satisfied."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Carrier frequency acquisition method and apparatus having improved reliability for detecting carrier acquisition or loss thereof","description":"A carrier signal acquisition technique is disclosed. An improved course carrier frequency offset algorithm is employed in conjunction with a conventional fine carrier frequency offset algorithm. The c","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8537713","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-8537713","citation_suggestion":"Patentable. \"Carrier frequency acquisition method and apparatus having improved reliability for detecting carrier acquisition or loss thereof\" (US-8537713). https://patentable.app/patents/US-8537713","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8537713","json":"https://patentable.app/api/llm-context/US-8537713","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T04:15:30.495Z"}