Doan TQ, Nguyen XQ, Hoang TM. Discrete-time Modeling and Numerical Evaluation of BER Performance for A BPSK-based DCSK-Walsh Coding Communication System over Multipath Rayleigh Fading Channels. old. 2017;(120C):99-103. Accessed August 2, 2025. https://jst.vn/index.php/old/article/view/848