{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8494459","patent":{"patent_number":"US-8494459","title":"Wideband codebook construction and applications","assignee":null,"inventors":[],"filing_date":"2011-08-19T00:00:00.000Z","publication_date":"2013-07-23T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04B","H04B","H04B"],"num_claims":2,"abstract":"A precoding scheme in which the downlink channel is estimated and an optimal precoding matrix to be used by the multi antenna transmitter is determined accordingly. The optimal precoding matrix is selected from a codebook of matrices that includes matrices having a structure matched to that of the eigenvectors of the spatial covariance matrix, wherein the spatial covariance matrix is modeled as a Hermitian and Toeplitz matrix parameterized by a single complex-valued scalar."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Wideband codebook construction and applications","description":"A precoding scheme in which the downlink channel is estimated and an optimal precoding matrix to be used by the multi antenna transmitter is determined accordingly. The optimal precoding matrix is sel","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8494459","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-8494459","citation_suggestion":"Patentable. \"Wideband codebook construction and applications\" (US-8494459). https://patentable.app/patents/US-8494459","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8494459","json":"https://patentable.app/api/llm-context/US-8494459","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T13:42:15.761Z"}