Channel pre-inversion and Max-SINR vector perturbation for large-scale broadcast channels

David A. Karpuk*, Peter Moss

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

We study channel pre-inversion and vector perturbation (VP) schemes for large-scale broadcast channels, wherein a transmitter has M transmit antennas and is transmitting to K single-antenna non-cooperating receivers. We provide results which predict the capacity of MMSE pre-inversion as K?8. We construct a new VP strategy, max-SINR VP (MSVP), which maximizes a sharp estimate of the signal-to-interference-plusnoise 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.

Original languageEnglish
Article number7956278
Pages (from-to)494-506
Number of pages13
JournalIEEE Transactions on Broadcasting
Volume63
Issue number3
DOIs
Publication statusPublished - 1 Sep 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • Broadcast channels
  • Channel pre-inversion
  • MMSE inverse
  • Random matrix theory
  • SINR
  • Sorted QR precoding
  • Vector perturbation

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