{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9628119","patent":{"patent_number":"US-9628119","title":"Adaptive high-order nonlinear function approximation using time-domain volterra series to provide flexible high performance digital pre-distortion","assignee":null,"inventors":[],"filing_date":"2015-06-26T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["H04B","H04B"],"num_claims":19,"abstract":"A method is described for predistorting an input signal to compensate for non-linearities caused to the input signal in producing an output signal. The method comprises: providing an input for receiving a first input signal as a plurality of signal samples, x[n], to be transmitted over a non-linear element; providing at least one digital predistortion block comprising, a plurality of IQ predistorter cells coupled to the input, each comprising a lookup table (LUT) for generating an LUT output. The at least one digital predistortion block block is configured to apply interpolation between LUT entries for the plurality of LUTs; and generate an output signal, y[n], by each of the plurality of IQ predistorter cells by adaptively modifying the first input signal using interpolated LUT entries to compensate for distortion effects in the non-linear element. A combiner may be provided configured to combine the output signal samples, yQ, from the plurality of IQ predistorter cells into a combined signal to generate the output signal, y[n], for transmission to the non-linear element. An error calculation block may be coupled to a digital predistortion adaptation block to determine and modify a predistortion performance."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Adaptive high-order nonlinear function approximation using time-domain volterra series to provide flexible high performance digital pre-distortion","description":"A method is described for predistorting an input signal to compensate for non-linearities caused to the input signal in producing an output signal. The method comprises: providing an input for receivi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9628119","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-9628119","citation_suggestion":"Patentable. \"Adaptive high-order nonlinear function approximation using time-domain volterra series to provide flexible high performance digital pre-distortion\" (US-9628119). https://patentable.app/patents/US-9628119","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9628119","json":"https://patentable.app/api/llm-context/US-9628119","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:20:18.563Z"}