An effective beamformer for interference suppression without knowing the direction

Luyen Tong (Hanoi University of Industry)
Cuong Nguyen (Hanoi University of Industry)

International Journal of Electrical and Computer Engineering
Vol 13, No 1: February 2023

This paper proposes an effective beamformer for uniform linear arrays of half-wave dipole antennas based on binary bat algorithm (BBA) by controlling complex weights (both amplitudes and phases) excited at elements in an array. The proposed beamformer can impose adaptive nulls at interferences without knowing directions in the sidelobe region by minimizing the total output power of an array, whereas the main lobe and sidelobe levels are maintained. To demonstrate this capability, the proposal will be evaluated in several scenarios, compared to a beamformer based on binary particle swarm optimization (BPSO).