D2D Enabled Cooperation in Massive MIMO Systems With Cascaded Precoding

  title={D2D Enabled Cooperation in Massive MIMO Systems With Cascaded Precoding},
  author={Yinsheng Liu and Geoffrey Ye Li and Wei Han},
  journal={IEEE Wireless Communications Letters},
In frequency-division duplexing massive multiple-input multiple-output (MIMO) systems, cascaded precoding can convert the high-dimensional physical channel into a low-dimensional effective channel, such that traditional channel estimation and limited feedback can be used. The inner precoder in cascaded precoding depends on the spatial covariance matrix of the massive MIMO channel. If the users are close to each other, they may share the same inner precoder because the similar surrounding… CONTINUE READING

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