@ARTICLE {5269,
author={ Moço and S.  Teodoro and A.  Silva and A. Gameiro},
doi={},
journal={Intrnl. Journal On Advances in Systems and Measurements},
title={Single and Multiple Antenna Relay-Assisted Techniques for Uplink and Downlink OFDM Systems },
year={2010},
month={September},
volume={3},
number={2},
pages={22-34},
ISSN={}
}