This is a very basic code describing how the LQ decomposition of channel matrix is utilised for Precoding in MU-MIMO system. When the Channel state information is available at Transmitter(Let's say Base station), this precoding techniques(DPC) is much useful, since it will cancel out all the received interference and a simple AWGN threshold detector is needed at the receiver. So at the user side, simple/weightless hardware is only needed for decoding.Â