{"id":"https://openalex.org/keywords/pulse-position-modulation","display_name":"pulse position modulation","description":"Pulse position modulation is a signal-modulation method that encodes information by varying the timing of pulses within a sequence.","display_name_alternatives":["PPM"],"ids":{"openalex":"https://openalex.org/keywords/pulse-position-modulation","wikidata":"https://www.wikidata.org/wiki/Q1767289"},"primary_topic":{"id":"https://openalex.org/T10851","display_name":"Optical Wireless Communication Technologies","score":0.372,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10851","display_name":"Optical Wireless Communication Technologies","score":0.372,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12024","display_name":"Ultra-Wideband Communications Technology","score":0.2004,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"works_count":3988,"cited_by_count":45267,"works_api_url":"https://api.openalex.org/works?filter=keywords.id:keywords/pulse-position-modulation","updated_date":"2026-10-22T04:07:25","created_date":"2022-04-12T19:38:12"}