{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11483704","patent":{"patent_number":"US-11483704","title":"Physical layer secure communication against an eavesdropper with arbitrary number of eavesdropping antennas","assignee":null,"inventors":[],"filing_date":"2020-12-27T00:00:00.000Z","publication_date":"2022-10-25T00:00:00.000Z","cpc_codes":["H04L","H04W","H04L","H04L","H04L","H04W"],"num_claims":14,"abstract":"A method for physical layer secure transmission against an arbitrary number of eavesdropping antennas includes: S1: communication between legitimate transmitter Alice and legitimate receiver Bob is confirmed; S2: Alice randomly generates a key bit bk with MS bits, maps the key bit bk into a key symbol K, and performs an XOR on the key bit bk and to-be-transmitted confidential information b to obtain an encrypted bits bs; S3: Bob transmits a pilot sequence to Alice, and Alice calculates a candidate precoding space W and transmits modulated symbol streams s=(s1, . . , sN) by using precoding W(e); S4: Bob measures received signal strength of each antenna, estimates the corresponding antenna vector e, inversely maps the vector e to obtain key symbols and key bits, and demodulates the received symbol streams in sequence at each activated antenna to obtain demodulated ciphertext bits; S5: Bob performs an XOR on observed key bits and the demodulated ciphertext bits to obtain the confidential information."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Physical layer secure communication against an eavesdropper with arbitrary number of eavesdropping antennas","description":"A method for physical layer secure transmission against an arbitrary number of eavesdropping antennas includes: S1: communication between legitimate transmitter Alice and legitimate receiver Bob is co","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11483704","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-11483704","citation_suggestion":"Patentable. \"Physical layer secure communication against an eavesdropper with arbitrary number of eavesdropping antennas\" (US-11483704). https://patentable.app/patents/US-11483704","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11483704","json":"https://patentable.app/api/llm-context/US-11483704","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T16:24:48.278Z"}