Adaptive null steering beamformer implementation for flexible broad null control

Authors:
S. Leng;W. Ser
Affiliations:
School of Electrical and Electronic Engineering, Centre for Signal Processing, Nanyang Technological University, Singapore 639798, Singapore;School of Electrical and Electronic Engineering, Centre for Signal Processing, Nanyang Technological University, Singapore 639798, Singapore
Venue:
Signal Processing
Year:
2011

Citing 7
Cited 1

A simple fast adaptive zero tracking algorithm

Signal Processing
Multiantenna Digital Radio Transmission

Multiantenna Digital Radio Transmission
Fundamentals of Digital Signal Processing with Cdrom

Fundamentals of Digital Signal Processing with Cdrom
Adaptive beamformer derived from a constrained null steering design

Signal Processing
Theory and application of covariance matrix tapers for robustadaptive beamforming

IEEE Transactions on Signal Processing
Robust beamforming for interference rejection in mobilecommunications

IEEE Transactions on Signal Processing
A simple algorithm to achieve desired patterns for arbitrary arrays

IEEE Transactions on Signal Processing

IIR array processing based fast adaptive null steering algorithm using shift-invariant subarrays

Signal Processing

Quantified Score

Hi-index	0.08

Visualization

Abstract

An implementation of adaptive null steering beamformer for flexible broad null control, based on constrained recursive updating of array response zeros and spatial FIR filters, is presented. The design allows the beamformer to form broad nulls and control their widths readily. The new method is of great advantage for sensor array in which the number of array elements is very large compared with the number of interferences the array is designed to suppress. The new beamformer is useful and effective in the environment where both stationary and moving interference signals exist since it can steer both sharp and controlled broad nulls in the appropriate directions. When compared with the conventional LMS covariance matrix taper (CMT) based broad null synthesis method, the proposed beamformer has a faster convergence rate; and compared with the QR-RLS CMT based broad null synthesis method, the proposed method has a lower complexity.