Nguyen Van Vinh, and Nguyen Thi Phuong Hoa. “RESEARCHING AND PROPOSING AN OPTIMAL POWER CONTROL PARAMETER IN OFDM-BASED COGNITIVE RADIO SYSTEMS”. UTEHY Journal of Science and Technology 28 (January 6, 2021): 43-47. Accessed June 29, 2022. https://tapchi.utehy.edu.vn/index.php/jst/article/view/407.