New Energy Efficiency Metric With Imperfect Channel Considerations for OFDMA Systems. - Charilaos C. Zarakovitis; Qiang Ni; John Spiliotis (IEEE Wirel. Commun. Lett., 2014)

Energy-Efficient Green Wireless Communication Systems With Imperfect CSI and Data Outage. - Charilaos C. Zarakovitis; Qiang Ni; John Spiliotis (IEEE J. Sel. Areas Commun., 2016)