no code implementations • 16 Sep 2023 • X. Sheng, D. Lu, Y. Li, R. C. de Lamare
In this letter, inspired by the maximum inter-element spacing (IES) constraint (MISC) criterion, an enhanced MISC-based (EMISC) sparse array (SA) with high uniform degrees-of-freedom (uDOFs) and low mutual-coupling (MC) is proposed, analyzed and discussed in detail.
no code implementations • 2 Sep 2023 • S. Mohammadzadeh, V. H. Nascimento, R. C. de Lamare, O. Kukrer
This work presents a cost-effective technique for designing robust adaptive beamforming algorithms based on efficient covariance matrix reconstruction with iterative spatial power spectrum (CMR-ISPS).
no code implementations • 18 Mar 2023 • S. Mohammadzadeh, V. H. Nascimento, R. C. de Lamare, O. Kukrer
In this work, a simple and effective robust adaptive beamforming technique is proposed for uniform linear arrays, which is based on the power spectral estimation and uncertainty region (PSEUR) of the interference plus noise (IPN) components.
no code implementations • 20 Aug 2022 • W. Shi, Y. Li, R. C. de Lamare
A novel sparse array (SA) structure is proposed based on the maximum inter-element spacing (IES) constraint (MISC) criterion.
no code implementations • 9 Apr 2022 • Y. Yu, L. Lu, Y. Zakharov, R. C. de Lamare, B. Chen
This paper proposes a unified sparsity-aware robust recursive least-squares RLS (S-RRLS) algorithm for the identification of sparse systems under impulsive noise.
no code implementations • 20 Jan 2022 • Z. Zheng, L. Lu, Y. Yu, R. C. de Lamare, Z. Liu
For active impulsive noise control, a filtered-x recursive least $p$-power (FxRLP) algorithm is proposed by minimizing the weighted summation of the $p$-power of the \emph{a posteriori} errors.
no code implementations • 8 May 2021 • W. S. Leite, R. C. de Lamare
This paper proposes an enhanced coarray transformation model (EDCTM) and a mixed greedy maximum likelihood algorithm called List-Based Maximum Likelihood Orthogonal Matching Pursuit (LBML-OMP) for direction-of-arrival estimation with non-uniform linear arrays (NLAs).
no code implementations • 5 Feb 2021 • T. Yu, W. Li, Y. Yu, R. C. de Lamare
The exponential functional link network (EFLN) has been recently investigated and applied to nonlinear filtering.
no code implementations • 13 Jan 2021 • A. Danaee, R. C. de Lamare, V. H. Nascimento
In this work, we present an energy-efficient distributed learning framework using low-resolution ADCs and coarsely quantized signals for Internet of Things (IoT) networks.
no code implementations • 28 Dec 2020 • S. Mohammadzadeh, V. H. Nascimento, R. C. de Lamare
In this letter, we present a novel low-complexity adaptive beamforming technique using a stochastic gradient algorithm to avoid matrix inversions.
no code implementations • 20 Dec 2020 • A. Danaee, R. C. de Lamare, V. H. Nascimento
In this work, we present an energy-efficient distributed learning framework using coarsely quantized signals for Internet of Things (IoT) networks.
no code implementations • 20 Apr 2020 • Y. Yu, H. He, T. Yang, X. Wang, R. C. de Lamare
This work proposes diffusion normalized least mean M-estimate algorithm based on the modified Huber function, which can equip distributed networks with robust learning capability in the presence of impulsive interference.
no code implementations • 23 Dec 2019 • X. Wang, Z. Yang, J. Huang, R. C. de Lamare
Simulation results show that the proposed algorithm is robust to prior knowledge errors and can provide good clutter suppression performance in low sample support.
no code implementations • 27 Nov 2019 • H. Ruan, R. C. de Lamare
In this work, we present a novel robust distributed beamforming (RDB) approach based on low-rank and cross-correlation techniques.
no code implementations • 27 Oct 2019 • Q. Jiang, S. Li, Z. Zhu, H. Bai, X. He, R. C. de Lamare
This paper deals with the design of a sensing matrix along with a sparse recovery algorithm by utilizing the probability-based prior information for compressed sensing system.
no code implementations • 18 Aug 2019 • Y. Yu, L. Lu, Z. Zheng, W. Wang, Y. Zakharov, R. C. de Lamare
The dichotomous coordinate descent (DCD) algorithm has been successfully used for significant reduction in the complexity of recursive least squares (RLS) algorithms.
no code implementations • 4 Feb 2019 • Y. Yu, H. Zhao, R. C. de Lamare, Y. Zakharov, L. Lu
This work develops robust diffusion recursive least squares algorithms to mitigate the performance degradation often experienced in networks of agents in the presence of impulsive noise.
no code implementations • 24 Dec 2018 • Y. Yu, R. C. de Lamare, Y. Zakharov
This work develops a robust diffusion recursive least squares algorithm to mitigate the performance degradation often experienced in networks of agents in the presence of impulsive noise.
no code implementations • 16 Dec 2018 • S. Pinto, R. C. de Lamare
In this work, we present direction-of-arrival (DoA) estimation algorithms based on the Krylov subspace that effectively exploit prior knowledge of the signals that impinge on a sensor array.
no code implementations • 16 Oct 2018 • Y. Yu, H. Zhao, R. C. de Lamare
We propose two sparsity-aware normalized subband adaptive filter (NSAF) algorithms by using the gradient descent method to minimize a combination of the original NSAF cost function and the l1-norm penalty function on the filter coefficients.
no code implementations • 15 Aug 2018 • A. Flores, R. C. de Lamare
In the last decade, a considerable research effort has been devoted to developing adaptive algorithms based on kernel functions.
no code implementations • 1 May 2018 • S. F. B. Pinto, R. C. de Lamare
An analysis of the MSE of the reshaped data covariance matrix is carried out along with comparisons between computational complexities of the proposed and existing algorithms.
no code implementations • 1 Dec 2017 • H. Ruan, R. C. de Lamare
In this work, we present a novel robust distributed beamforming (RDB) approach to mitigate the effects of channel errors on wireless networks equipped with relays based on the exploitation of the cross-correlation between the received data from the relays at the destination and the system output.
Signal Processing Information Theory Information Theory
no code implementations • 27 Aug 2017 • R. C. de Lamare, André Flores
Adaptive algorithms based on kernel structures have been a topic of significant research over the past few years.
no code implementations • 5 Nov 2014 • S. Xu, R. C. de Lamare, H. V. Poor
This paper proposes a novel distributed reduced--rank scheme and an adaptive algorithm for distributed estimation in wireless sensor networks.
no code implementations • 14 Jan 2014 • S. Xu, R. C. de Lamare, H. V. Poor
This paper presents new dynamic topology adaptation strategies for distributed estimation in smart grids systems.