{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9641274","patent":{"patent_number":"US-9641274","title":"SNR estimation for sounding signals","assignee":null,"inventors":[],"filing_date":"2015-05-18T00:00:00.000Z","publication_date":"2017-05-02T00:00:00.000Z","cpc_codes":["H04J","H04L","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":15,"abstract":"An OFDM receiving apparatus is provided for estimating a signal-to-noise ratio of a code-division multiplexed sounding signal transmitted over a wide channel of a wireless communication system. The apparatus separately determines the noise power level and the signal power associated with the sounding signal. Namely, the noise power level is determined in the frequency domain based on a noise covariance matrix. Further, the sounding signal's power level is determined, in the time domain, based on power delay profile of the wide channel over which the sounding signal has been transmitted."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"SNR estimation for sounding signals","description":"An OFDM receiving apparatus is provided for estimating a signal-to-noise ratio of a code-division multiplexed sounding signal transmitted over a wide channel of a wireless communication system. The ap","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9641274","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-9641274","citation_suggestion":"Patentable. \"SNR estimation for sounding signals\" (US-9641274). https://patentable.app/patents/US-9641274","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9641274","json":"https://patentable.app/api/llm-context/US-9641274","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:39:56.221Z"}