{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10498509","patent":{"patent_number":"US-10498509","title":"CSI feedback for MIMO wireless communication systems with polarized active antenna array","assignee":null,"inventors":[],"filing_date":"2018-09-21T00:00:00.000Z","publication_date":"2019-12-03T00:00:00.000Z","cpc_codes":["H04L","H04B","H04B","H04B","H04B","H04B","H04B","H04B","H04W"],"num_claims":19,"abstract":"A base station capable of communicating with a user equipment (UE) includes a transceiver configured to transmit 8-port Channel State Information-Reference Signal (CSI-RS) according to a CSI-RS configuration for the UE, and downlink signals containing the CSI-RS configuration on physical downlink shared channels (PDSCH), and receive, from the UE, uplink signals containing Precoder Matrix Indicator (PMI) derived using the 8-port CSI-RS, and a controller configured to convert the PMI to one of predetermined precoding vectors. A user equipment includes a transceiver configured to receive downlink signals containing a CSI-RS configuration on PDSCH transmitted by the BS, and 8-port CSI-RS according to the CSI-RS configuration, and transmit uplink signals containing a PMI, a controller configured to decode the CSI-RS configuration from the downlink signals, and derive the PMI by utilizing channel estimates based on the 8-port CSI-RS, the PMI mapped to one of precoding vectors."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"CSI feedback for MIMO wireless communication systems with polarized active antenna array","description":"A base station capable of communicating with a user equipment (UE) includes a transceiver configured to transmit 8-port Channel State Information-Reference Signal (CSI-RS) according to a CSI-RS config","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10498509","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-10498509","citation_suggestion":"Patentable. \"CSI feedback for MIMO wireless communication systems with polarized active antenna array\" (US-10498509). https://patentable.app/patents/US-10498509","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10498509","json":"https://patentable.app/api/llm-context/US-10498509","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T12:25:28.037Z"}