U. D. . Suleiman, M. . Esa, N. N. . Nik Abd Malik, . K. . Mohd Yusof, M. F. . Mohd Yusoff, and . M. R. . Hamid, “A Review on Frequency Synchronization in Collaborative Beamforming: A Practical Approach ”, J. Adv. Res. Appl. Mech. , vol. 31, no. 1, pp. 1–15, Nov. 2020.