Patent Document ID: 20100136940
Application ID: 11993507
Patent Flag: 0

Claim One:
1. A method in a radio receiver of joint synchronization and noise covariance estimation of a received signal, said method comprising the steps of: generating a spatially and temporally stacked signal model by stacking successive samples of temporally adjacent received signal vectors and corresponding training vectors: determining a best synchronization position for the received signal based on the stacked training vectors; computing a best estimate of a noise covariance matrix based on the synchronization position and the stacked signal vectors; computing a channel estimate through the steps of: creating a fictitious channel that neglects the Toeplitz structure of a received channel matrix; and computing an estimate of the fictitious channel based on the synchronization position and the stacked signal and training vectors; and computing an estimate of a whitened channel based on the noise covariance matrix and the estimate of the fictitious channel.