{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9774400","patent":{"patent_number":"US-9774400","title":"Method and apparatus for low-complexity quasi-reduced state soft-output equalizer","assignee":null,"inventors":[],"filing_date":"2016-06-16T00:00:00.000Z","publication_date":"2017-09-26T00:00:00.000Z","cpc_codes":["H04B","H04B","H04L","H04L","H04L","H04L"],"num_claims":20,"abstract":"Quasi-reduced state trellis equalization techniques achieve low-latency inter-symbol interference (ISI) equalization by selecting a subset of accumulated path metrics (APMs) for a leading symbol to propagate over a trellis to candidate states of a trailing symbol. This simplifies the computation of APMs for candidate states of the trailing symbol. Thereafter, APMs for candidate states of the trailing symbol are computed based on the subset of APMs for the leading symbol that were propagated over the trellis. Propagating fewer than all APMs for the leading symbol to the trailing symbol reduces the complexity of APM computation at the trailing symbol."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for low-complexity quasi-reduced state soft-output equalizer","description":"Quasi-reduced state trellis equalization techniques achieve low-latency inter-symbol interference (ISI) equalization by selecting a subset of accumulated path metrics (APMs) for a leading symbol to pr","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9774400","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-9774400","citation_suggestion":"Patentable. \"Method and apparatus for low-complexity quasi-reduced state soft-output equalizer\" (US-9774400). https://patentable.app/patents/US-9774400","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9774400","json":"https://patentable.app/api/llm-context/US-9774400","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T13:47:06.398Z"}