Chen W, Duan C. Numerical Index Modulation Aided Multi-Carrier DCSK System: A Secure Transmission Scheme for Physical Layer Security. EAI Endorsed Scal Inf Syst [Internet]. 2026 Mar. 16 [cited 2026 Mar. 18];12(7). Available from: https://publications.eai.eu/index.php/sis/article/view/12043