Design of Multichannel Spectrum Intelligence Systems Using Approximate Discrete Fourier Transform Algorithm for Antenna Array-Based Spectrum Perception Applications. - Arjuna Madanayake; Keththura Lawrance; Bopage Umesha Kumarasiri; Sivakumar Sivasankar; Thushara K. Gunaratne; Chamira U. S. Edussooriya; Renato J. Cintra (Algorithms, 2024)