Multi-tier cooperative broadcasting with hierarchical modulations. - Tairan Wang; Alfonso Cano; Georgios B. Giannakis; F. Javier Ramos (EUSIPCO, 2006)

Reduced-Complexity Power-Efficient Wireless OFDMA using an Equally Probable CSI Quantizer. - Antonio G. Marqués; Fadel F. Digham; Georgios B. Giannakis; F. Javier Ramos (ICC, 2007)

Minimizing Power in Wireless OFDMA with Limited-Rate Feedback. - Antonio G. Marqués; Georgios B. Giannakis; Fadel F. Digham; F. Javier Ramos (WCNC, 2007)

Power-efficient wireless OFDMA using limited-rate feedback. - Antonio G. Marqués; Georgios B. Giannakis; Fadel F. Digham; F. Javier Ramos (IEEE Trans. Wirel. Commun., 2008)