{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9698909","patent":{"patent_number":"US-9698909","title":"Training sequence generation method, training sequence generation apparatus, and optical communications system","assignee":null,"inventors":[],"filing_date":"2015-02-27T00:00:00.000Z","publication_date":"2017-07-04T00:00:00.000Z","cpc_codes":["H04L","H04B","H04B","H04B","H04B","H04L","H04L","H04B"],"num_claims":12,"abstract":"Embodiments of the present invention provide training sequence generation method which includes generating a pseudo random sequence; obtaining a chirp coefficient of a modulator using a negated chirp coefficient to modulate the pseudo random sequence; constructing a training symbol segment that includes L subcarriers in a frequency domain, transforming the training symbol segment from the frequency domain to a time domain to obtain a training symbol segment in the time domain, and generating a training sequence based on the training symbol segment in the time domain and outputting the training sequence."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Training sequence generation method, training sequence generation apparatus, and optical communications system","description":"Embodiments of the present invention provide training sequence generation method which includes generating a pseudo random sequence; obtaining a chirp coefficient of a modulator using a negated chirp ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9698909","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-9698909","citation_suggestion":"Patentable. \"Training sequence generation method, training sequence generation apparatus, and optical communications system\" (US-9698909). https://patentable.app/patents/US-9698909","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9698909","json":"https://patentable.app/api/llm-context/US-9698909","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:03:55.776Z"}