Xinji Tian, Qianqian Li, Xingwang Li, Hui Zhang, Khaled Rabie, Charles Casimiro Cavalcante, Vol. 13, No. 11, November 30, 2019
10.3837/tiis.2019.11.006

• Non-orthogonal multiple access
• residual hardware impairments
• two-way relay
• channel estimation errors

Lei Wang, Yueming Cai, Weiwei Yang, Wei Yan, Jialei Song, Vol. 9, No. 5, May 30, 2015
10.3837/tiis.2015.05.007

• Transmit beamforming and relay selection
• delay and channel estimation errors
• diversity and coding gains
• power allocation