{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9603130","patent":{"patent_number":"US-9603130","title":"Apparatus for measuring EVM of PHICH in LTE system","assignee":null,"inventors":[],"filing_date":"2015-01-30T00:00:00.000Z","publication_date":"2017-03-21T00:00:00.000Z","cpc_codes":["H04W","H04L","H04L"],"num_claims":4,"abstract":"An apparatus for efficiently and simply measuring an error vector magnitude (EVM) of a physical hybrid automatic repeat request (ARQ) indicator channel (PHICH) in a long term evolution (LTE) system. The apparatus includes an overall PHICH group data extraction unit configured to extract all PHICH group data from a received signal in a first subframe, an overall PHICH group analysis unit configured to detect orthogonal sequences and acknowledgement/negative acknowledgement (ACK/NACK) bits used in respective PHICH groups by analyzing all resources of the extracted PHICH group data, an ideal PHICH group sequence generation unit configured to generate an ideal PHICH group sequence using the detected ACK/NACK bits and orthogonal sequences, and an EVM measurement unit configured to measure an EVM of a PHICH using the ideal PHICH group sequence and the received signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus for measuring EVM of PHICH in LTE system","description":"An apparatus for efficiently and simply measuring an error vector magnitude (EVM) of a physical hybrid automatic repeat request (ARQ) indicator channel (PHICH) in a long term evolution (LTE) system. T","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9603130","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-9603130","citation_suggestion":"Patentable. \"Apparatus for measuring EVM of PHICH in LTE system\" (US-9603130). https://patentable.app/patents/US-9603130","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9603130","json":"https://patentable.app/api/llm-context/US-9603130","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:04:32.046Z"}