Abstract
A simple algorithm is developed for unbiased parameter identification of autoregressive (AR) signals subject to white measurement noise. It is shown that the corrupting noise variance, which determines the bias in the standard least-squares (LS) parameter estimator, can be estimated by simply using the expected LS errors when the ratio between the driving noise variance and the corrupting noise variance is known or obtainable in some way. Then an LS based algorithm is established via the principle of bias compensation. Compared with the other LS based algorithms recently developed, the introduced algorithm produces better parameter estimates, requires fewer computations and has a simpler algorithmic structure.
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