Truncated Polynomial Expansion Downlink Precoders and Uplink Detectors for Massive MIMO

@article{Benzin2017TruncatedPE,
  title={Truncated Polynomial Expansion Downlink Precoders and Uplink Detectors for Massive MIMO},
  author={Andreas Benzin and Giuseppe Caire and Yonatan Shadmi and Antonia Maria Tulino},
  journal={CoRR},
  year={2017},
  volume={abs/1711.04141}
}
In TDD reciprocity-based massive MIMO it is essential to be able to compute the downlink precoding matrix over all OFDM resource blocks within a small fraction of the uplink-downlink slot duration. For example, in the pioneering work by Marzetta it is assumed that such precoding matrix can be computed within one OFDM symbol time interval. Early implementation of massive MIMO are limited to the simple Conjugate Beamforming (ConjBF) precoding method, because of such computation latency limitation… CONTINUE READING