@INPROCEEDINGS {8678,
author={ Moço and A.  Silva and  Lima and A. Gameiro},
doi={},
booktitle={IEEE International Symp. on Wireless Communication Systems - ISWCS},
title={Multiple Antenna Relay-Assisted Schemes for the Uplink OFDM Based Systems},
year={2009},
month={September},
volume={-},
pages={---} 
}