Zero-forcing precoding

Zero-forcing (or null-steering) precoding is a method of spatial signal processing by which a multiple antenna transmitter can null the multiuser interference in a multi-user MIMO wireless communication system.[1] When the channel state information is perfectly known at the transmitter, the zero-forcing precoder is given by the pseudo-inverse of the channel matrix. Zero-forcing has been used in LTE mobile networks.[2]

  1. ^ Yoo, Taesang; Goldsmith, Andrea J. (2005). "Optimality of zero-forcing beamforming with multiuser diversity". IEEE International Conference on Communications, 2005. Vol. 1. Seoul, Korea (South): IEEE. pp. 542–546. doi:10.1109/ICC.2005.1494410. ISBN 978-0-7803-8938-0.
  2. ^ Aslan, Yanki; Roederer, Antoine; Fonseca, Nelson; Angeletti, Piero; Yarovoy, Alexander (Oct 2021). "Orthogonal Versus Zero-Forced Beamforming in Multibeam Antenna Systems: Review and Challenges for Future Wireless Networks". IEEE Journal of Microwaves. 1 (4): 879–901. doi:10.1109/JMW.2021.3109244. ISSN 2692-8388.