{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9647736","patent":{"patent_number":"US-9647736","title":"Compressed training for massive MU-MIMO in a wireless local area network","assignee":null,"inventors":[],"filing_date":"2016-03-06T00:00:00.000Z","publication_date":"2017-05-09T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B"],"num_claims":18,"abstract":"A WAP including: an MU grouping module; a constrained station identifier: a precode matrix calculator and compressor, and a spatial mapper. The MU grouping module selects a downlink MU group of stations and a number of downlink streams. The constrained station identifier identifies any of the stations in the MU group that are constrained stations and a limit on the number of training streams supported for the most constrained station. The precode matrix calculator calculates a precode matrix “Q” for spatially separating the aggregate number of MU-MIMO downlink streams. The precode matrix compressor responds to the identification of any constrained stations in the MU group, by compressing the precede matrix Q into a compressed precode matrix “C(Q)”. The spatial mapper spatially maps a training portion of each packet with a selected one of C(Q) and Q as a precode matrix; based on whether or not a constrained station is identified within the MU group."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Compressed training for massive MU-MIMO in a wireless local area network","description":"A WAP including: an MU grouping module; a constrained station identifier: a precode matrix calculator and compressor, and a spatial mapper. The MU grouping module selects a downlink MU group of statio","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9647736","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-9647736","citation_suggestion":"Patentable. \"Compressed training for massive MU-MIMO in a wireless local area network\" (US-9647736). https://patentable.app/patents/US-9647736","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9647736","json":"https://patentable.app/api/llm-context/US-9647736","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:21:46.140Z"}