Title :
Cramer-Rao lower bound for constrained complex parameters
Author :
Jagannatham, Aditya K. ; Rao, Bhaskar D.
Author_Institution :
Center for Wireless Commun., Univ. of California, San Diego, CA, USA
Abstract :
An expression for the Cramer-Rao lower bound (CRB) on the covariance of unbiased estimators of a constrained complex parameter vector is derived. The application and usefulness of the result is demonstrated through its use in the context of a semiblind channel estimation problem.
Keywords :
MIMO systems; channel estimation; signal processing; CRB; Cramer-Rao lower bound; MIMO; constrained parameter; semiblind channel estimation; signal processing; unbiased estimator; Calculus; Channel estimation; Communication systems; Constraint theory; Context; Helium; MIMO; Parameter estimation; Signal processing; Wireless communication; CRB; Channel estimation; Cramer–Rao bound; MIMO; constrained parameters; semiblind;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2004.836948
