JSAC
2008
13 years 7 months ago
2008
Abstract--In a downlink Orthogonal Frequency Division Multiple Access (OFDMA) system, optimally allocating sub-channels across mobile users can require excessive feedback of channe...
CISS
2007
IEEE
13 years 11 months ago
2007
IEEE
This paper considers broadcast channels with L antennas at the base station and m single-antenna users, where each user has perfect channel knowledge and the base station obtains c...