Secure communication in K-user multi-antenna broadcast channel with state feedback

@article{Yang2015SecureCI,
  title={Secure communication in K-user multi-antenna broadcast channel with state feedback},
  author={Sheng Yang and Mari Kobayashi},
  journal={2015 IEEE International Symposium on Information Theory (ISIT)},
  year={2015},
  pages={1976-1980}
}
In this paper, we consider the secure communication in a K-user multi-antenna broadcast channel (BC) with state feedback. We characterize the optimal secure degrees of freedom (SDoF) region of multiple-input single-output (MISO) channel. The SDoF region is achievable by a secret key based linear scheme, which generates analog secret keys by sending artificial noise and then performs space-time alignment scheme secured by these secret keys. The optimality is proved by deriving a new outer bound… CONTINUE READING

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