Beamforming Methods of Nonlinear Filtering for Interference Signal Cancellation

Project Details


The beamforming technology can be used to cancel interference signals coming from different incident angles for a uniform linear antenna array. Some beamforming techniques have been well developed, in which the generalized sidelobe canceller (GSC) can adaptively adjust the beamforming pattern for the desired signal to obtain maximum signal-to-interference-plus-noise ratio (SINR) and actually, it converts a constrained optimization beamforming problem into an un-constrainted one. Nevertheless, the GSC technique is very sensitive to the direction-of-arrival (DOA) mismatch of the desired signal. In this proposal, we model the DOA mismatch or moreover, the DOA change due to a moving source, into the GSC structure. Using the state-space formulation, three nonlinear filtering algorithms, i.e., the extended Kalman filter, the unscented Kalman filter, and the particle filter, will be developed and compared to solve the DOA mismatch problem in a decision feedback (DF) GSC beamforming structure. The actual DOA information is estimated by proposed algorithms and is provided to the GSC for improving SINR. System SINR and transmission performance will be explored in this project to study the proposed method.
Effective start/end date1/08/1831/10/19

UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):

  • SDG 5 - Gender Equality
  • SDG 11 - Sustainable Cities and Communities
  • SDG 17 - Partnerships for the Goals


  • Beamforming
  • Interference Cancellation
  • Kalman Filter
  • DOA Tracking


Explore the research topics touched on by this project. These labels are generated based on the underlying awards/grants. Together they form a unique fingerprint.
  • Trimmed-Mean FxLMS Algorithm for ANC in Impulsive Noise

    Chang, D. C. & Chiang, P. W., 2 Jul 2018, 2018 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 1268-1271 4 p. 8659566. (2018 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2018 - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    1 Scopus citations