Toward High Accuracy Positioning in 5G via Passive Synchronization of Base Stations Using Thermally-Insensitive Optical Fibers. - Wenwu Zhu 005; Eric R. Numkam Fokoua; Yong Chen 015; Thomas D. Bradley; Seyed Reza Sandoghchi; Meng Ding 003; Gregory T. Jasion; Marco N. Petrovich; Francesco Poletti; Mingshan Zhao; David J. Richardson; Radan Slavík (IEEE Access, 2019)