{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9705599","patent":{"patent_number":"US-9705599","title":"Systems for improved spectral efficiency in multi-carrier communication systems","assignee":null,"inventors":[],"filing_date":"2015-07-30T00:00:00.000Z","publication_date":"2017-07-11T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04J"],"num_claims":13,"abstract":"This disclosure provides systems, methods, and apparatus for improving spectral efficiency of a communication system. The communication system can include a transmitter, a receiver and a communication link for communicating data between the transmitter and the receiver. The transmitter can employ a multi-carrier technique to transmit data to the receiver. The transmitter can generate a plurality of carrier signals using a receiver-side comb generator, one of which is sent to the transmitter as a pilot carrier signal combined with modulated carrier signals over an optical link. At the receiver the receiver-side comb generator uses the pilot carrier signal to generate a plurality of receiver-side carrier signals, which are used for detecting the modulated carrier signals. As the phase noise in the modulated carrier signals and the phase noise in the receiver-side carrier signals have the same characteristics, the phase noise is cancelled at the receiver, resulting in improved detection."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Systems for improved spectral efficiency in multi-carrier communication systems","description":"This disclosure provides systems, methods, and apparatus for improving spectral efficiency of a communication system. The communication system can include a transmitter, a receiver and a communication","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9705599","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-9705599","citation_suggestion":"Patentable. \"Systems for improved spectral efficiency in multi-carrier communication systems\" (US-9705599). https://patentable.app/patents/US-9705599","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9705599","json":"https://patentable.app/api/llm-context/US-9705599","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:35:17.574Z"}