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Degrees of Freedom of Interference Channels with Hybrid Beam-forming
[article]
2015
arXiv
pre-print
We study the sum degrees of freedom (DoF) of interference channels with hybrid beam-forming in which hybrid beam-forming composed of analog and digital precodings is employed at each node. For the two-user case, we completely characterize the sum DoF for an arbitrary number of antennas and RF chains by developing an achievable scheme optimized for the hybrid beam-forming structure and deriving its matching upper bound. For a general K-user case, we focus on a symmetric case and obtain lower and
arXiv:1504.06743v1
fatcat:lsq66twzkjgvdlb34mibjkclry