Limited feedback unitary precoding for MIMO full stream transmission

Peng Cheng*, Zhuo Chen, Yun Rui, Y. Jay Guo, Mohsen Guizani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Limited feedback precoding (LFP) significantly improves multiple-input-multiple-output (MIMO) spatial multiplexing link reliability with a small amount of feedback from the receiver back to the transmitter. One of the key problems with LFP is how to select an optimal precoder from a predetermined unitary codebook. We find that the conventional precoder selection criteria are not applicable to the full stream transmission mode with linear [zero forcing (ZF) and minimum mean square error (MMSE)] receivers. To solve this issue, a novel singular value decomposition (SVD)-based precoder selection criterion optimizing the bit error rate (BER) performance is proposed in this paper. The proposed criterion features a unified structure for both linear receivers and it can be calculated based on fast matrix computation algorithms. Its effectiveness in the full stream transmission mode is verified by simulation results.

Original languageEnglish
Article number6746169
Pages (from-to)4092-4096
Number of pages5
JournalIEEE Transactions on Vehicular Technology
Issue number8
Publication statusPublished - 1 Oct 2014
Externally publishedYes


  • Limited feedback
  • multiple-input-multiple-output (MIMO)
  • precoding
  • spatial multiplexing


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