Stephan Weiss

TL;DR: In this paper, the authors address the fundamentals and most recent developments in the field of wideband beamforming and provide an excellent reference for all professionals working in the area of array signal processing and its applications in wireless communications.

Abstract: In this brief, a design algorithm for real-valued and complex-valued oversampled filter banks which yield a low level of inband alias and enable simple subband adaptive structures is presented. The filter banks are either based on complex modulation of a real-valued low-pass prototype or on the direct or modulated setups of real-valued filter banks. If real-valued filter banks are required, then the different channels will have different subsampling ratios so that the bandpass sampling theorem is not violated. This brief also presents design examples of real-valued and complex-valued filter banks.

TL;DR: In this paper, a simple method for the design of a class of arrays with frequency invariant beam patterns is proposed, which uses a series of substitutions and an n-D inverse Fourier transform to obtain the desired frequency responses of the filters following each sensor.

TL;DR: A new iterative PEVD algorithm based on sequential matrix diagonalization (SMD) is introduced, and it is demonstrated that SMD establishes diagonalization faster and with lower order operations than existing PEVD algorithms.

TL;DR: Modifications are proposed to an iterative, time-domain PEVD method, known as the sequential best rotation (SBR2) algorithm, which enables its effective application to the problem of FIR orthonormal filter bank design for efficient subband coding.