FDD Massive MIMO Channel Training: Optimal Rate-Distortion Bounds and the Spectral Efficiency of ``One-Shot” Schemes

Download

• Paper on IEEE Xplore

Summary

We derive simple formulas for the asymptotically optimal quality scaling exponent (channel estimation error decay exponent as a function of SNR) as a function pilot and feedback dimensions and the channel covariance rank. We further compare several ``one-shot" schemes, in which feedback is computed based on instantaneous pilot measurements at the user side and measure their channel estimation error and (empirically computed) spectral efficiency performance to the optimal strategy.

Citation

Barzegar Khalilsarai, Mahdi, Yi Song, Tianyu Yang, and Giuseppe Caire. “FDD Massive MIMO Channel Training: Optimal Rate-Distortion Bounds and the Spectral Efficiency of “one-shot” Schemes.” IEEE Transactions on Wireless Communications (2023).

@article{khalilsarai2023fdd,
  title={FDD Massive MIMO Channel Training: Optimal Rate-Distortion Bounds and the Spectral Efficiency of “one-shot” Schemes},
  author={Khalilsarai, Mahdi Barzegar and Song, Yi and Yang, Tianyu and Caire, Giuseppe},
  journal={IEEE Transactions on Wireless Communications},
  year={2023},
  publisher={IEEE}
}