Key Microwave-Photonics Technologies for Next-Generation Cloud-Based Radio Access Networks Liu, Cheng ; Wang, Jing ; Cheng, Lin ; Zhu, Ming ; Chang, Gee-Kung Abstract Publication: Journal of Lightwave Technology Pub Date: October 2014 DOI: 10.1109/JLT.2014.2338854 Bibcode: 2014JLwT...32.3452L