Ruprecht, C.; Chen, Y.; Fritzsche, D.; Hoyningen-Huene, J; Hanik, N.; Weis, E.; Breuer. D.; Rosenkranz, W.. 37.5-km Urban Field Trial of OFDMA-PON using Colorless ONUs with Dynamic Bandwidth Allocation and TCM .The Optical Fiber Communication Conference and Exposition (OFC).2014