Patent Document ID: 20140029662
Application ID: 14037743
Patent Flag: 0

Claim One:
1. A base station comprising: a plurality of antennas which are configured to transmit a signal stream to a plurality of user terminals; and a Generalized Decision Feedback Equalizer (GDFE) precoder which is configured to produce the signal stream for the plurality of user terminals, and which includes a transmitter filter using a transmit filter matrix (B) in a feedforward path and an interference pre-cancellation using an interference pre-cancellation matrix (G) in a feedback path, wherein the transmit filter matrix (B) and the interference pre-cancellation matrix (G) are computed from a covariance matrix for a downlink channel (S), and the downlink channel (S) is computed from a multiple access channel matrix (D) with a channel gain matrix (H) between the plurality of antennas and the plurality of user terminals.