Optimal channel estimation and training design for two-way relay networks

  title={Optimal channel estimation and training design for two-way relay networks},
  author={Feifei Gao and Rui Zhang and Ying-Chang Liang},
  journal={IEEE Transactions on Communications},
In this work, we consider the two-way relay network (TWRN) where two terminals exchange their information through a relay node in a bi-directional manner and study the training-based channel estimation under the amplify-and-forward (AF) relay scheme. We propose a two-phase training protocol for channel estimation: in the first phase, the two terminals send their training signals concurrently to the relay; and in the second phase, the relay amplifies the received signal and broadcasts it to both… CONTINUE READING
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