Degrees of Freedom in Multiuser MIMO
<|reference_start|>Degrees of Freedom in Multiuser MIMO: We explore the available degrees of freedom for various multiuser MIMO communication scenarios such as the multiple access, broadcast, interference, relay, X and Z channels. For the two user MIMO interference channel, we find a general inner bound and a genie-aided outer bound that give us the exact number of degrees of freedom in many cases. We also study a share-and-transmit scheme for transmitter cooperation. For the share-and-transmit scheme, we show how the gains of transmitter cooperation are entirely offset by the cost of enabling that cooperation so that the available degrees of freedom are not increased.<|reference_end|>
@article{jafar2005degrees,
    title={Degrees of Freedom in Multiuser MIMO},
    author={Syed A. Jafar, Maralle J. Fakhereddin},
    journal={arXiv preprint arXiv:cs/0510055},
    year={2005},
    archivePrefix={arXiv},
    eprint={cs/0510055},
    primaryClass={cs.IT math.IT}
}