{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9628303","patent":{"patent_number":"US-9628303","title":"Receiver apparatus and frequency selectivity interference correction method","assignee":null,"inventors":[],"filing_date":"2013-11-29T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":13,"abstract":"An OFDM receiver apparatus (100) receives a signal that includes an STF having a plurality of pilot subcarriers and a plurality of null subcarriers that are alternately arranged at predetermined frequency intervals in a transmission band and that includes a data part that is time-multiplexed with the STF. A null carrier extraction unit (151) extracts a plurality of null subcarrier frequency signals from the received signal. A power calculation unit (152) detects, based on the levels of the extracted signals, the interference levels of the plurality of subcarriers in the transmission band. A soft decision unit (112) uses the reliability of the plurality of subcarriers, which is calculated based on the detected interference levels, to perform a soft decision of a demodulated signal of the received data part. An error correction unit (113) performs, based on the result of the soft decision, an error correction, thereby reconstructing the data."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Receiver apparatus and frequency selectivity interference correction method","description":"An OFDM receiver apparatus (100) receives a signal that includes an STF having a plurality of pilot subcarriers and a plurality of null subcarriers that are alternately arranged at predetermined frequ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9628303","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-9628303","citation_suggestion":"Patentable. \"Receiver apparatus and frequency selectivity interference correction method\" (US-9628303). https://patentable.app/patents/US-9628303","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9628303","json":"https://patentable.app/api/llm-context/US-9628303","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:43:21.864Z"}