Simple Down-Conversion by Power Detector in a 2×2 MIMO V-Band Optical/Wireless System with Mitigation of Beating Interference. - Tsung-Hung Tsai; Zhen-Xiong Xie; Ping-Yao Huang; Cheng-Xi Li; Wen-Huang Chen; Chao-Wei Chen; Chun-Ting Lin; Chia-Chien Wei (OECC/PSC, 2019)