{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9838178","patent":{"patent_number":"US-9838178","title":"Transmission signal generation apparatus, transmission signal generation method, reception signal apparatus, and reception signal method","assignee":null,"inventors":[],"filing_date":"2016-06-14T00:00:00.000Z","publication_date":"2017-12-05T00:00:00.000Z","cpc_codes":["H04L","H04B","H04L","H04L","H04L","H04L","H04L","H04B","H04J","H04L","H04L","H04L"],"num_claims":17,"abstract":"Multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) communication is provided which allows high accuracy estimation of frequency offset, high accuracy estimation of a transmission path fluctuation and high accuracy synchronization/signal detection. Pilot symbol mapping is provided for forming pilot carriers by assigning orthogonal sequences to corresponding subcarriers among OFDM signals which are transmitted at the same time from respective antennas in the time domain. Even when pilot symbols are multiplexed among a plurality of channels (antennas), this allows frequency offset/phase noise to be estimated with high accuracy."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Transmission signal generation apparatus, transmission signal generation method, reception signal apparatus, and reception signal method","description":"Multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) communication is provided which allows high accuracy estimation of frequency offset, high accuracy estimation of","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9838178","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-9838178","citation_suggestion":"Patentable. \"Transmission signal generation apparatus, transmission signal generation method, reception signal apparatus, and reception signal method\" (US-9838178). https://patentable.app/patents/US-9838178","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9838178","json":"https://patentable.app/api/llm-context/US-9838178","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T03:55:14.471Z"}