Energy efficiency analysis of downlink CoMP in heterogeneous network considering fronthaul power consumption - Seojoo Choi; Seungjae Jung; Jinkyu Kang; Joonhyuk Kang (26th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2015, Hong Kong, China, August 30 - September 2, 2015, 2015)