Interference whitening filters for MIMO maximum likelihood receivers

摘要

Systems and methods are provided for whitening noise of a received signal vector in a multiple-input multiple-output (MIMO) transmission or storage system. The whitening filter may be designed to whiten an interference component of the received signal vector, where the interference component is derived from modeling transmitter and receiver imperfections as a first coupling between MIMO transmitter outputs and a second coupling between MIMO receiver. The whitening filter may be computed based on the covariance matrix of the interference component.

主权项

1. A method of processing a signal vector in a multiple-input multiple-output (MIMO) receiver, the method comprising:
determining whether the signal vector is obtained from a recognized MIMO transmitter; filtering the signal vector based on receiver-side interference information when the MIMO transmitter is not recognized; and filtering the signal vector based on the receiver-side interference information and transmitter-side interference information when the MIMO transmitter is recognized.