{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8532161","patent":{"patent_number":"US-8532161","title":"Method and apparatus that facilitates estimating Doppler spread for uplink transmissions","assignee":null,"inventors":[],"filing_date":"2010-06-17T00:00:00.000Z","publication_date":"2013-09-10T00:00:00.000Z","cpc_codes":["G01S","H04L","H04L","H04L","H04W"],"num_claims":41,"abstract":"Methods, apparatuses, and computer program products are disclosed for performing a Doppler spread estimation. In a first embodiment, an energy associated with a communication from a wireless terminal is ascertained based on at least one pilot symbol and at least one data symbol. Each of an energy variance and a noise variance are then determined to facilitate estimating a speed of the wireless terminal based on the energy variance normalized by the noise variance. In another embodiment, a signal received from a wireless terminal is decoded and replicated. A channel estimate associated with a set of data symbols is then ascertained from the replica, which is used to estimate the speed of the wireless terminal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus that facilitates estimating Doppler spread for uplink transmissions","description":"Methods, apparatuses, and computer program products are disclosed for performing a Doppler spread estimation. In a first embodiment, an energy associated with a communication from a wireless terminal ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8532161","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-8532161","citation_suggestion":"Patentable. \"Method and apparatus that facilitates estimating Doppler spread for uplink transmissions\" (US-8532161). https://patentable.app/patents/US-8532161","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8532161","json":"https://patentable.app/api/llm-context/US-8532161","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T10:30:26.429Z"}