154 citations · 1.1k across the 115 of their papers we have counts for
9 papers · 1 filter
Study of Opportunistic Cooperation Techniques using Jamming and Relays for Physical-Layer Security in Buffer-aided Relay Networks
X. Lu, R. C. de Lamare
In this paper, we investigate opportunistic relay and jammer cooperation schemes in multiple-input multiple-output (MIMO) buffer-aided relay networks. The network consists of one s…
Flexible Widely-Linear Multi-Branch Decision Feedback Detection Algorithms for Massive MIMO Systems
R. C. de Lamare
This paper presents widely-linear multi-branch decision feedback detection techniques for large-scale multiuser multiple-antenna systems. We consider a scenario with impairments in…
Study of Structured Root-LDPC Codes and PEG Techniques for Block-Fading Channels
C. T. Healy, A. G. D. Uchoa, R. C. de Lamare
In this work, we propose structured Root-Low-Density Parity-Check (LDPC) codes and design techniques for block-fading channels. In particular, Quasi-Cyclic Root-LDPC codes, Irregul…
Study of Efficient Robust Adaptive Beamforming Algorithms Based on Shrinkage Techniques
H. Ruan, R. C. de Lamare
This paper proposes low-complexity robust adaptive beamforming (RAB) techniques based on shrinkage methods. We firstly briefly review a Low-Complexity Shrinkage-Based Mismatch Esti…
Study of Sparsity-Aware Distributed Conjugate Gradient Algorithms for Sensor Networks
Rodrigo C. de Lamare
This paper proposes distributed adaptive algorithms based on the conjugate gradient (CG) method and the diffusion strategy for parameter estimation over sensor networks. We present…
Adaptive Reduced-Rank Minimum Symbol-Error-Rate Receive Processing for Large-Scale Multiple-Antenna Systems
Y. Cai, R. C. de Lamare, B. Qin +2
In this work, we propose a novel adaptive reduced-rank receive processing strategy based on joint preprocessing, decimation and filtering (JPDF) for large-scale multiple-antenna sy…
Interference Suppression in Multiuser Systems Based on Bidirectional Algorithms
P. Clarke, R. C. de Lamare
This paper presents adaptive bidirectional minimum mean-square error parameter estimation algorithms for fast-fading channels. The time correlation between successive channel gains…
Low-Rank Signal Processing: Design, Algorithms for Dimensionality Reduction and Applications
Rodrigo C. de Lamare
We present a tutorial on reduced-rank signal processing, design methods and algorithms for dimensionality reduction, and cover a number of important applications. A general framewo…
Iterative Detection and Decoding Algorithms using LDPC Codes for MIMO Systems in Block-Fading Channels
André Uchoa, Cornelius T. Healy, Rodrigo C. de Lamare
We propose iterative detection and decoding (IDD) algorithms with Low-Density Parity-Check (LDPC) codes for Multiple Input Multiple Output (MIMO) systems operating in block-fading…