Complex constrained CRB and its application to semi-blind MIMO and OFDM channel estimation

@article{Jagannatham2004ComplexCC,
  title={Complex constrained CRB and its application to semi-blind MIMO and OFDM channel estimation},
  author={A. K. Jagannatham and B. V. Rao},
  journal={Processing Workshop Proceedings, 2004 Sensor Array and Multichannel Signal},
  year={2004},
  pages={397-401}
}
We derive an expression for the Cramer-Rao lower bound (CRB) on the covariance of unbiased estimators of a constrained complex parameter vector and demonstrate key applications of the theory. In the first part, motivated by the result in A. van den Bos et al. (1994) we introduce an important extension to the set of constraints on the complex parameters. This extension then leads to a simple expression for the complex constrained CRB similar to the result in P. Stoica et al. (1998). This CRB… CONTINUE READING

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