Patent ID: 8798184
Filing Date: 2014-08-05
Classification: H04B

Abstract:
1. A method to improve packet error rate in a multiple-input multiple-output (MIMO) communication system, the method comprising: decompressing, at a transceiver, a plurality of stored beamforming steering matrices, wherein the plurality of stored beamforming steering matrices are associated with a plurality of sub-carriers of a radio frequency signal received by the transceiver; decomposing singular values by singular value decomposition(SVD); determining, at a pre-minimum means square error (pre-MMSE) stage, a maximum number of streams used by the MIMO communication system and a predicted signal to noise ratio (SNR) based at least in part on the singular values; interpolating the stored beamforming steering matrices to obtain beamforming steering matrices associated with the plurality of sub-carriers; using MMSE and the predicted SNR to weight steering vectors of the stored beamforming steering matrices for the streams; and applying the weighted steering vectors to data to be transmitted by the transceiver to generate beamformed data streams.