Structure of Optimal Input Covariance Matrices for MIMO Systems with Covariance Feedback under General Correlated Fading
<|reference_start|>Structure of Optimal Input Covariance Matrices for MIMO Systems with Covariance Feedback under General Correlated Fading: We describe the structure of optimal Input covariance matrices for single user multiple-input/multiple-output (MIMO) communication system with covariance feedback and for general correlated fading. Our approach is based on the novel concept of right commutant and recovers previously derived results for the Kronecker product models. Conditions are derived which allow a significant simplification of the optimization problem.<|reference_end|>
@article{bjelakovic2006structure,
    title={Structure of Optimal Input Covariance Matrices for MIMO Systems with
  Covariance Feedback under General Correlated Fading},
    author={Igor Bjelakovic, Holger Boche},
    journal={Proc. of the 2006 IEEE International Symposium on Information
  Theory, ISIT 2006 Seattle, pp. 1041-1045},
    year={2006},
    doi={10.1109/ISIT.2006.261886},
    archivePrefix={arXiv},
    eprint={cs/0601107},
    primaryClass={cs.IT math.IT}
}