Masato Saito Chandranath R. N. Athaudage Jamie Evans On Power Allocation for Dual-Hop Amplify-and-Forward OFDM Relay Systems. 4112-4117 2008 GLOBECOM http://dx.doi.org/10.1109/GLOCOM.2008.ECP.789 conf/globecom/2008 db/conf/globecom/globecom2008.html#SaitoAE08