Simple expressions for worst and best case Cramer-Raoboundsfor amplitude and phase estimation of closely spaced cisoids
Erdoǧan Dilaveroǧlu · Electronics Letters · 1999
Simple expressions are presented for the worst and best case Cramér-Rao bounds for the amplitude and phase estimation of two cisoids in the presence of complex white Gaussian noise. The expressions are valid in the sub-Rayleigh region where the difference between the critical values of the bounds becomes important.