Which is better: One-way or two-way relaying with an amplify-and-forward relay?

@article{Liao2014WhichIB,
  title={Which is better: One-way or two-way relaying with an amplify-and-forward relay?},
  author={Jiachun Liao and Fanggang Wang and Dongping Yao and Miao Wang},
  journal={2014 IEEE Wireless Communications and Networking Conference (WCNC)},
  year={2014},
  pages={1087-1092}
}
Amplify-and-forward (AF) based two-way relaying (TWR) has shown its sum rate advantage over AF based one-way relaying (OWR) in the literature. However, this advantage can not be achieved in some cases. In this paper, we evaluate the sum rates of AF based OWR/TWR and provide the relationship with respect to the relative channel gains and the relative transmit power of the three nodes, i.e., the relay node and two source nodes. Upon this, we determine the metric on choosing OWR or TWR given… CONTINUE READING