Energy-efficiency optimization strategy for AF-OFDM two-way relaying system with asymmetric traffic
HUANG Tian-cong, HE Hao-chen, FENG Wen-jiang, JIA Nian-long
Systems Engineering and Electronics . 2015, (11): 2591 -2597 .  DOI: 10.3969/j.issn.1001-506X.2015.11.26