October 20, 2016

Practical Hardware Considerations for the Design of Hybrid Precoding Systems

  • Garcia Rodriguez A.
  • Rulikowski P.
  • Venkateswaran V.

In this paper we describe practical implications of employing communication schemes with analog beamforming networks (ABFN). Specifically, we formulate realistic constraints for standard ABFN based on the S-parameters of the hardware components involved in their implementation. We concentrate on flexible fully-connected ABFN and Butler networks for im- plementing the discrete Fourier transform (DFT) in the analog domain. The results presented in this paper show that both the performance and the energy efficiency (EE) of conventional hy- brid precoding designs are severely affected when the additional power losses introduced by practical ABFN are accounted for.

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