Stimulation of the Blind Frequency offset in time and / or spatially correlated Signals

摘要

Process of iterative Blind estimation of frequency offset that requires no Training Signal demodulated symbols or information.The receptors are disclosed processes can produce regular estimates of Frequency Shift, without running Computationally Intensive algorithms of Equalization and DEMODULATION, by exploiting the temporal correlation of the received signal in Time Domain, and C And also the correlation of the Received Signal through the dimensions in phase QuadratureIn some embodiments, to find an estimate of the frequency shift that best fits the received signal in a maximum likelihood Sense.In the method, to estimate the frequency offset of receiver, a block Signal temporarily stacked from the samples of signal of multiple branches corresponding to each of two or more separate samples at the time of the Received Signal.The temporarily piled Block signal is used to compute a maximum likelihood Joint estimation of the frequency offset of receiver and the spatial covariance of the Block Signal temporarily stacked rotated by the frequency offset of receiver.