{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8477869","patent":{"patent_number":"US-8477869","title":"Equal power output spatial spreading matrix for use in a wireless MIMO communication system","assignee":null,"inventors":[],"filing_date":"2012-08-06T00:00:00.000Z","publication_date":"2013-07-02T00:00:00.000Z","cpc_codes":["H04B","H04L"],"num_claims":20,"abstract":"A symbol encoder unit is configured to produce two or more encoded spatial data streams, wherein a number, NSS, of the encoded spatial data streams is less than a number, NTX, of transmission antennas to be used to transmit the encoded spatial data streams. A spatial spreading unit is configured to utilize a spatial spreading matrix Q to distribute two or more encoded spatial data streams to the transmission antennas. Q has NTX rows and NSS columns, and Q satisfies one or more of the following two constraints:for all t=1 . . . NTX., orfor all t=1 . . . NTX when Sl is equal to (i)−1 or (ii) 1. Q(t,l) is a component of Q at row t, column l, Sl is a symbol in an 1-th spatial stream. B is a constant, and A1, A2, . . . , ANis a sequence of constants."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Equal power output spatial spreading matrix for use in a wireless MIMO communication system","description":"A symbol encoder unit is configured to produce two or more encoded spatial data streams, wherein a number, NSS, of the encoded spatial data streams is less than a number, NTX, of transmission antennas","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8477869","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-8477869","citation_suggestion":"Patentable. \"Equal power output spatial spreading matrix for use in a wireless MIMO communication system\" (US-8477869). https://patentable.app/patents/US-8477869","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8477869","json":"https://patentable.app/api/llm-context/US-8477869","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T05:14:01.775Z"}