Hybrid Precoding for Correlated Multi-user mm-wave Channels Based on Beam Alignment

Yifang Nie, Fangwei Li, Allan Wainaina Mbugua, Wei Fan

Research output: Contribution to journalJournal articleResearchpeer-review


Hybrid analog-and-digital precoding in millimeter-wave (mm-wave) multiple-input multiple-output (MIMO) communications is a promising strategy to save cost with a minimal performance penalty. In this letter, a novel hybrid precoder (HP) design is proposed for correlated multi-user mm-wave communication scenarios. With a hybrid beamformer structure, the proposed solution can effectively align beams to cover the strongest paths of individual users, and suppress interference by iterative ping-pong beamforming (PPB) strategy. Experimental results demonstrate that the proposed scheme can obtain higher spectrum efficiency compared to existing HP designs in highly correlated channels.

Original languageEnglish
JournalI E E E Wireless Communications Letters
Issue number2
Pages (from-to)381-385
Number of pages5
Publication statusPublished - 2022


  • Array signal processing
  • Beam alignment
  • Indexes
  • Interference
  • Matching pursuit algorithms
  • Precoding
  • Radio frequency
  • Wireless communication
  • hybrid precoding
  • millimeter-wave channels
  • multi-user communications.


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