Low-complexity adaptive broadband beamforming based on the non-uniform decomposition method

Sub-band adaptive processing is an established method to design a broadband beamformer. The uniform decomposition method (UDM) is a common approach for designing sub-band adaptive beamformer (SAB) that would split the received signal into a number of uniform sub-bands. However, the UDM has redundancies on decomposed sub-bands at high frequencies in the passband. In this paper, we propose a number of techniques to overcome this issue. By …