{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9628153","patent":{"patent_number":"US-9628153","title":"Closed loop MIMO systems and methods","assignee":null,"inventors":[],"filing_date":"2016-01-19T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04B","H04B","H04B","H04B","H04L","H04L","H04L","H04W","H04W","H04W","H04W","H04L","H04L","H04L","H04L","H04W"],"num_claims":17,"abstract":"Systems and methods for closed loop MIMO (multiple input and multiple output) wireless communication are provided. Various transmit formats including spatial multiplexing and STTD are defined in which vector or matrix weighting is employed using information fed back from receivers. The feedback information may include channel matrix or SVD-based feedback."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Closed loop MIMO systems and methods","description":"Systems and methods for closed loop MIMO (multiple input and multiple output) wireless communication are provided. Various transmit formats including spatial multiplexing and STTD are defined in which","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9628153","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-9628153","citation_suggestion":"Patentable. \"Closed loop MIMO systems and methods\" (US-9628153). https://patentable.app/patents/US-9628153","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9628153","json":"https://patentable.app/api/llm-context/US-9628153","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:10:54.213Z"}