Closed-form interpolations for MISO-OFDM beamforming codewords

@article{Kim2010ClosedformIF,
  title={Closed-form interpolations for MISO-OFDM beamforming codewords},
  author={Joontae Kim and Byung Wook Kim and Jai-Hoon Lee and Dong-Jo Park},
  journal={2010 International Conference on Information and Communication Technology Convergence (ICTC)},
  year={2010},
  pages={43-44}
}
We derive a spherical linear interpolation (SLI) with a closed-form phase term. The derived SLI is compared with the geodesic interpolation. Simulation results show that both schemes are efficient and similar when the channels are highly correlated, since their objectives are equivalent in a sense of minimizing the distance between two adjacent codewords. 

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