Non-Orthogonal Multiple Access in Downlink Coordinated Two-Point Systems

  title={Non-Orthogonal Multiple Access in Downlink Coordinated Two-Point Systems},
  author={Jinho Choi},
  journal={IEEE Communications Letters},
In order to improve the spectral efficiency, non-orthogonal multiple access (NOMA) with superposition coding is employed in a coordinated system where downlink signals to users near to base stations (BSs) and cell-edge users are transmitted simultaneously. To support a cell-edge user in a NOMA channel, two coordinated BSs use Alamouti code. In order to see the performance, we derive expressions for the transmission rates to near and cell-edge users. It is shown that the proposed coordinated… CONTINUE READING
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