A forwarding scheme by superposition coding for wireless relaying
Yang Liu, Mugen Peng, Wenbo Wang · 2009
We propose a forwarding scheme by superposition coding for wireless relaying, in which a relay will not forward a message to a destination if the destination has successfully decoded the message directly from a source. In our scheme, flag signal and data signal are superimposed and transmitted by the source, and according to whether the flag signal has been successfully decoded by the relay, the relay can determine whether to forward the data signal to the destination. Numerical results show that our scheme can outperform classical decode-and-forward cooperation scheme in terms of spectral efficiency and outage probability.