{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9609658","patent":{"patent_number":"US-9609658","title":"System and method for interference alignment in cognitive small cell networks","assignee":null,"inventors":[],"filing_date":"2014-07-31T00:00:00.000Z","publication_date":"2017-03-28T00:00:00.000Z","cpc_codes":["H04W","H04J","H04L","H04L","H04L","H04W"],"num_claims":20,"abstract":"Aspects of this disclosure provide techniques for computing Vandermonde-subspace frequency division multiplexing (VFDM) precoders for secondary network transmissions that mitigate interference between secondary communication signals, while avoiding interference with the primary system altogether. A precoder for a secondary user (SU) is computed on accordance with a nullspace induced by cyclic prefixes communicated over a primary data channel, a primary interference channel between a second user (SU) and the primary receiver, and a secondary interference channel between the SU and a neighboring SBS. The precoder provides both frequency domain precoding and spatial domain precoding on secondary transmission signals communicated from the SU."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"System and method for interference alignment in cognitive small cell networks","description":"Aspects of this disclosure provide techniques for computing Vandermonde-subspace frequency division multiplexing (VFDM) precoders for secondary network transmissions that mitigate interference between","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9609658","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-9609658","citation_suggestion":"Patentable. \"System and method for interference alignment in cognitive small cell networks\" (US-9609658). https://patentable.app/patents/US-9609658","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9609658","json":"https://patentable.app/api/llm-context/US-9609658","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:19:22.726Z"}