Title :
A forwarding scheme by superposition coding for wireless relaying
Author :
Liu, Yang ; Peng, Mugen ; Wang, Wenbo
Author_Institution :
Wireless Signal Process. & Network Lab., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
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.
Keywords :
encoding; wireless channels; data signal; decode- and-forward cooperation scheme; decoding; flag signal; forwarding scheme; outage probability; spectral efficiency; superposition coding; wireless relaying; Bandwidth; Broadcasting; Communications technology; Data communication; Decoding; Gaussian noise; Laboratories; Power system relaying; Relays; Signal processing;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5122-7
Electronic_ISBN :
978-1-4244-5123-4
DOI :
10.1109/PIMRC.2009.5449767
