Novel Precoding Structures Design of Multiuser with SWIPT for MIMO Downlink Systems

Joint Beamforming and Power Allocation for Multiuser MISO Broadcast Channel SWIPT Employing OFDM

“…Beamforming optimization through WSR maximization is studied for multiantenna MU-SWIPT single-carrier downlinks in [9]- [11], [18]. The algorithm in [9] iteratively maximizes a sum-rate lower bound as a function of the transmit covariance matrices.…”

“…In [10], a gradient-based method and a difference of convex (DC) programming are used. Precoding structures are studied in [18]. Both [10], [18] use block-diagonalization (BD) to removed interference.…”

“…Precoding structures are studied in [18]. Both [10], [18] use block-diagonalization (BD) to removed interference. Interference-free spatial switching through generalized triangular decomposition is investigated in [17] for point-to-point MIMO-SWIPT.…”

“…Interference-free spatial switching through generalized triangular decomposition is investigated in [17] for point-to-point MIMO-SWIPT. While effective in simplifying the optimization problems considered in [10], [17], [18], canceling the interference removes a degree of freedom. The authors in [12] convert the WSR problem to a weighted sum mean square error minimization and formulate it as a quadratic program.…”