Yao Tang Xiaolin Zhou Ziyi Zhang Qiyuan Tian Performance Analysis of a Two-Way Network-Coded Free Space Optical Relay Scheme over Strong Turbulence Channels. 1-5 2011 VTC Fall http://dx.doi.org/10.1109/VETECF.2011.6092956 conf/vtc/2011f db/conf/vtc/vtc2011f.html#TangZZT11