A Self Interference Nulling Filter Using Effective Channel Information for Full Duplex Systems

Hyunjong Na, Chungyong Lee

Research output: Contribution to journalArticle


We propose a spatial domain interference cancelation scheme for full duplex bi-directional communication systems. Although the conventional pre-processing filters, such as null space projection and minimum mean square error (MMSE), can eliminate self interference, they require the spatial dimensions more than the number of receive antennas. However, proposed scheme requires only one spatial dimension regardless of the number of receive antennas, which enables more efficient antenna allocation. Simulation results show that proposed scheme obtains higher achievable rate than the half duplex system and the MMSE filter.

Original languageEnglish
Pages (from-to)1157-1167
Number of pages11
JournalWireless Personal Communications
Issue number3
Publication statusPublished - 2020 Feb 1


All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering

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