Thaiwattanaporn, Phannipha, Pichaya Supanakoon, Sathaporn Promwong, and Jun-ichi Takada. 2015. “Indoor Wireless Channel Modeling for UWB Communications Using Finite Difference Time Domain Method”. Science & Technology Asia 13 (2):48-56. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41445.