Isotropic fading vector broadcast Channels:The scalar upper bound and loss in degrees of freedom

@article{Jafar2005IsotropicFV,
  title={Isotropic fading vector broadcast Channels:The scalar upper bound and loss in degrees of freedom},
  author={Syed Ali Jafar and Andrea J. Goldsmith},
  journal={IEEE Transactions on Information Theory},
  year={2005},
  volume={51},
  pages={848-857}
}
We propose a scalar upper bound on the capacity region of the isotropic fading vector broadcast channel in terms of the capacity region of a scalar fading broadcast channel. The scalar upper bound is applicable to the broad class of isotropic fading broadcast channels regardless of the distribution of the users' channel magnitudes, the distribution of the additive noise experienced by each user, or the amount of channel knowledge available at the receiver. Using this upper bound, we prove the… CONTINUE READING

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