Revision as of 01:14, 17 June 2021 edit 2620:10d:c090:400::5:9dea (talk) The pseudo-inverse can be obtained by any method, not necessarily through the Moore–Penrose inverse method. This is an unneeded detail for the brief introductory description of the method. ← Previous edit		Revision as of 19:22, 14 February 2022 edit undo Oifa (talk \| contribs) 2 edits No edit summary Next edit →
Line 1: Zero-forcing (or null-steering) precoding is a method of spatial signal processing by which a multiple antenna ~~transmitter~~transmitters can null the multiuser interference in a multi-user MIMO wireless communication system. When the channel state information is perfectly known at the transmitter, ~~then~~ the zero-forcing precoder is given by the pseudo-inverse of the channel matrix. ==Mathematical description== In a multiple antenna downlink system which comprises anof <math>N_t</math> transmit antenna access ~~point~~points and <math>K</math> single receive antenna users, such that <math>K \leq N_t</math>, the received signal of user <math>k</math> is described as :<math>y_k = \mathbf{h}_k^T \mathbf{x} + n_k, \quad k=1,2, \ldots, K</math>

Zero-forcing precoding: Difference between revisions