Maximum Entropy-Based Interference-Plus-Noise Covariance Matrix Reconstruction for Robust Adaptive Beamforming
Saeed Mohammadzadeh, Vítor H. Nascimento, Rodrigo C. de Lamare, Osman Kükrer
Abstract
To ensure signal receiving quality, robust adaptive beamforming (RAB) is of vital importance in modern communications. In this letter, we propose a new low-complexity RAB approach based on interference-plus-noise covariance matrix (IPNC) reconstruction and steering vector (SV) estimation. In this method, the IPNC and desired signal covariance matrices are reconstructed by estimating all interference powers as well as the desired signal power using the principle of maximum entropy power spectrum (MEPS). Numerical simulations demonstrate that the proposed method can provide superior performance to several previously proposed beamformers.
Topics & Concepts
Adaptive beamformerCovariance matrixBeamformingComputer scienceAlgorithmEntropy (arrow of time)Interference (communication)CovarianceNoise powerControl theory (sociology)MathematicsPower (physics)Artificial intelligenceTelecommunicationsStatisticsPhysicsControl (management)Channel (broadcasting)Quantum mechanicsSpeech and Audio ProcessingDirection-of-Arrival Estimation TechniquesAdvanced Adaptive Filtering Techniques