154 citations · 1.1k across the 115 of their papers we have counts for
16 papers · 1 filter
Knowledge-Aided STAP Using Low Rank and Geometry Properties
Zhaocheng Yang, Rodrigo C. de Lamare, Xiang Li +1
This paper presents knowledge-aided space-time adaptive processing (KA-STAP) algorithms that exploit the low-rank dominant clutter and the array geometry properties (LRGP) for airb…
Robust Adaptive Beamforming Based on Low-Complexity Shrinkage-Based Mismatch Estimation
Hang Ruan, Rodrigo C. de Lamare
In this work, we propose a low-complexity robust adaptive beamforming (RAB) technique which estimates the steering vector using a Low-Complexity Shrinkage-Based Mismatch Estimation…
Massive MIMO Systems: Signal Processing Challenges and Research Trends
R. C. de Lamare
This article presents a tutorial on multiuser multiple-antenna wireless systems with a very large number of antennas, known as massive multi-input multi-output (MIMO) systems. Sign…
Robust Adaptive Beamforming Algorithms Based on the Constrained Constant Modulus Criterion
L. Landau, R. C. de Lamare, M. Haardt
We present a robust adaptive beamforming algorithm based on the worst-case criterion and the constrained constant modulus approach, which exploits the constant modulus property of…
Low-Complexity Design of Generalized Block Diagonalization Precoding Algorithms for Multiuser MIMO Systems
K. Zu, R. C. de Lamare, M. Haardt
Block diagonalization (BD) based precoding techniques are well-known linear transmit strategies for multiuser MIMO (MU-MIMO) systems. By employing BD-type precoding algorithms at t…
Adaptive and Iterative Multi-Branch MMSE Decision Feedback Detection Algorithms for MIMO Systems
R. C. de Lamare
In this work, decision feedback (DF) detection algorithms based on multiple processing branches for multi-input multi-output (MIMO) spatial multiplexing systems are proposed. The p…
Robust Reduced-Rank Adaptive Processing Based on Parallel Subgradient Projection and Krylov Subspace Techniques
R. C. de Lamare, M. Yukawa, I. Yamada
In this paper, we propose a novel reduced-rank adaptive filtering algorithm by blending the idea of the Krylov subspace methods with the set-theoretic adaptive filtering framework.…
Bidirectional MMSE Algorithms for Interference Mitigation in CDMA Systems over Fast Fading Channels
Patrick Clarke, Rodrigo C. de Lamare
This paper presents adaptive bidirectional minimum mean-square error (MMSE) parameter estimation algorithms for fast-fading channels. The time correlation between successive channe…
Joint Transmit Diversity Optimization and Relay Selection for Cooperative MIMO Systems using Discrete Stochastic Algorithms
P. Clarke, R. C. de Lamare
We propose a joint discrete stochastic optimization based transmit diversity selection (TDS) and relay selection (RS) algorithm for decode-and-forward (DF), cooperative MIMO system…
Adaptive Reduced-Rank Processing Using a Projection Operator Based on Joint Iterative Optimization of Adaptive Filters For CDMA Interference Suppression
Rodrigo C. de Lamare, Raimundo Sampaio-Neto
This paper proposes a novel adaptive reduced-rank filtering scheme based on the joint iterative optimization of adaptive filters. The proposed scheme consists of a joint iterative…
Joint Model-Order and Step-Size Adaptation using Convex Combinations of Adaptive Reduced-Rank Filters
Rodrigo C. de Lamare, Vitor H. Nascimento
In this work we propose schemes for joint model-order and step-size adaptation of reduced-rank adaptive filters. The proposed schemes employ reduced-rank adaptive filters in parall…
Linear Reduced-Rank Interference Suppression for DS-UWB Systems Using Switched Approximations of Adaptive Basis Functions
Sheng Li, Rodrigo C. de Lamare
In this work, we propose a novel low-complexity reduced-rank scheme and consider its application to linear interference suppression in direct-sequence ultra-wideband (DS-UWB) syste…
Blind Adaptive Reduced-Rank Detectors for DS-UWB Systems Based on Joint Iterative Optimization and the Constrained Constant Modulus Criterion
Sheng Li, Rodrigo C. de Lamare
A novel linear blind adaptive receiver based on joint iterative optimization (JIO) and the constrained constant modulus (CCM) design criterion is proposed for interference suppress…
Adaptive Frequency Domain Detectors for SC-FDE in Multiuser DS-UWB Systems with Structured Channel Estimation and Direct Adaptation
Sheng Li, Rodrigo C. de Lamare
In this paper, we propose two adaptive detection schemes based on single-carrier frequency domain equalization (SC-FDE) for multiuser direct-sequence ultra-wideband (DS-UWB) system…
Frequency-Domain Group-based Shrinkage Estimators for UWB Systems
Sheng Li, Rodrigo C. de Lamare, Martin Haardt
In this work, we propose low-complexity adaptive biased estimation algorithms, called group-based shrinkage estimators (GSEs), for parameter estimation and interference suppression…
Distributed Space-Time Coding Based on Adjustable Code Matrices for Cooperative MIMO Relaying Systems
T. Peng, R. C. de Lamare, A. Schmeink
An adaptive distributed space-time coding (DSTC) scheme is proposed for two-hop cooperative MIMO networks. Linear minimum mean square error (MMSE) receive filters and adjustable co…