How to Fully Exploit the Degrees of Freedom in the Downlink of MISO Systems With Opportunistic Beamforming

Minghua Xia, Wenkun Wen, Soo-Chang Kim

The opportunistic beamforming in the downlink of multiple-input single-output (MISO) systems forms $N$ transmit beams, usually, no more than the number of transmit antennas $N_t$.…