Patent ID: 8780941
Filing Date: 2014-07-15
Classification: H04B,H04L

Abstract:
1. A method of computing Minimum Mean Squared Error (MMSE) matrices to reduce interference between multiple input multiple output (MIMO) streams in a wireless network, the method comprising: computing, by a receiver, a first MMSE matrix for a first sub-carrier in a pre-defined group of sub-carriers in a received Orthogonal Frequency Division Multiplexing/Orthogonal Frequency Division Multiple Access (OFDM/OFDMA) transmission frame, said first MMSE matrix based on a pilot signal of said first sub-carrier; and phase-shifting said computed first MMSE matrix at said receiver to compute a second MMSE matrix for a second sub-carrier in said predefined group of sub-carriers, said phase shifting based on a variation in column and row between said pilot signal of said first sub-carrier and a symbol of said second sub-carrier of said transmission frame.