{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9614635","patent":{"patent_number":"US-9614635","title":"Preamble design and detection for ranging in an optical OFDMA communication network","assignee":null,"inventors":[],"filing_date":"2012-11-30T00:00:00.000Z","publication_date":"2017-04-04T00:00:00.000Z","cpc_codes":["H04J","H04J","H04J","H04L","H04L","H04L","H04L","H04L","H04Q","H04J","H04Q"],"num_claims":16,"abstract":"The invention relates to an optical OFDMA communication network, comprising a plurality of optical network units (ONUs), wherein each one of the ONUs is configured to generate a ranging sequence for upstream synchronization of the ONUs, a receiving unit for receiving signals of the ONUs, the receiving unit being also configured to receive the ranging sequences of the ONUs. The receiving unit comprises a correlator unit in which a plurality of ranging sequences is stored. The receiving unit is configured to perform a ranging detection operation including performing a correlation operation with a plurality of the received ranging sequences using at least one of the stored ranging sequences and to transmit a ranging response to the ONUs depending on the result of the correlation operation."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Preamble design and detection for ranging in an optical OFDMA communication network","description":"The invention relates to an optical OFDMA communication network, comprising a plurality of optical network units (ONUs), wherein each one of the ONUs is configured to generate a ranging sequence for u","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9614635","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-9614635","citation_suggestion":"Patentable. \"Preamble design and detection for ranging in an optical OFDMA communication network\" (US-9614635). https://patentable.app/patents/US-9614635","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9614635","json":"https://patentable.app/api/llm-context/US-9614635","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:08:14.688Z"}