Precoder Design with Limited Feedback and Backhauling for Joint Transmission

  title={Precoder Design with Limited Feedback and Backhauling for Joint Transmission},
  author={Tilak Rajesh Lakshmana and Antti T{\"o}lli and Rahul Devassy and Tommy Svensson},
A centralized coordinated multipoint downlink joint transmission in a frequency division duplex system requires channel state information (CSI) to be fed back from the cell-edge users to their serving BS, and aggregated at the central coordination node for precoding, so that interference can be mitigated. The control signals comprising of CSI and the precoding weights can easily overwhelm the backhaul resources. Relative thresholding has been proposed to alleviate the burden; however, this is… CONTINUE READING
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