Channel Pre-Inversion and max-SINR Vector Perturbation for Large-Scale Broadcast Channels
Abstract
We study channel pre-inversion and vector perturbation (VP) schemes for large-scale broadcast channels, wherein a transmitter has transmit antennas and is transmitting to single-antenna non-cooperating receivers. We provide results which predict the capacity of MMSE pre-inversion as . We construct a new VP strategy, max-SINR vector perturbation (MSVP), which maximizes a sharp estimate of the signal-to-interference-plus-noise ratio. We provide results which predict the performance of MSVP and demonstrate that MSVP outperforms other VP methods. Lastly, we combine MSVP with the low-complexity Sorted QR Precoding method to show that MSVP has the potential to efficiently deliver data to a very large number of users at close to channel capacity.
Cite
@article{arxiv.1601.08112,
title = {Channel Pre-Inversion and max-SINR Vector Perturbation for Large-Scale Broadcast Channels},
author = {David A. Karpuk and Peter Moss},
journal= {arXiv preprint arXiv:1601.08112},
year = {2016}
}