154 citations · 1.1k across the 115 of their papers we have counts for
10 papers · 1 filter
User Activity Detection with Delay-Calibration for Asynchronous Massive Random Access
Zhichao Shao, Xiaojun Yuan, Rodrigo C. de Lamare +1
This work considers an uplink asynchronous massive random access scenario in which a large number of users asynchronously access a base station equipped with multiple receive anten…
Analysis of Partially-Calibrated Sparse Subarrays for Direction Finding with Extended Degrees of Freedom
W. S. Leite, R. C. de Lamare
This paper investigates the problem of direction-of-arrival (DOA) estimation using multiple partially-calibrated sparse subarrays. In particular, we present the Generalized Coarray…
Study of Clustered Robust Linear Precoding for Cell-Free MU-MIMO Networks
A. Flores, R. de Lamare
Precoding techniques are key to dealing with multiuser interference in the downlink of cell-free (CF) multiple-input multiple-output systems. However, these techniques rely on accu…
Decentralized and Centralized IDD Schemes for Cell-Free Networks
T. Ssettumba, Z. Shao, L. Landau +1
In this paper, we propose iterative interference cancellation schemes with access points selection (APs-Sel) for cell-free massive multiple-input multiple-output (CF-mMIMO) systems…
Study of Robust Direction Finding Based on Joint Sparse Representation
Y. Li, W. Xiao, L. Zhao +4
Standard Direction of Arrival (DOA) estimation methods are typically derived based on the Gaussian noise assumption, making them highly sensitive to outliers. Therefore, in the pre…
Iterative Detection and Decoding Schemes with LLR Refinements in Cell-Free Massive MIMO Networks
T. Ssettumba, Z. Shao, L. Landau +1
In this paper, we propose low-complexity local detectors and log-likelihood ratio (LLR) refinement techniques for a coded cell-free massive multiple input multiple output (CF- mMIM…
Study of Clustering Techniques and Scheduling Algorithms with Fairness for Cell-Free MIMO Networks
S. Mashdour, R. C. de Lamare
In this work, we propose a clustering technique based on information rates for cell-free massive multiple-input multiple-output (MIMO) networks. Unlike existing clustering approach…
Physical Layer Authentication Using Information Reconciliation
Atsu Kokuvi Angélo Passah, Rodrigo C. de Lamare, Arsenia Chorti
User authentication in future wireless communication networks is expected to become more complicated due to their large scale and heterogeneity. Furthermore, the computational comp…
Study of Adaptive Reweighted Sparse Belief Propagation Decoders for Polar Codes
R. M. Oliveira, R. C. de Lamare
In this paper, we present an adaptive reweighted sparse belief propagation (AR-SBP) decoder for polar codes. The AR-SBP technique is inspired by decoders that employ the sum-produc…
Study of Noncoherent Sparse Subarrays for Direction Finding Based on Low-Rank and Sparse Recovery
W. Leite, R. C. de Lamare
This paper investigates the problem of noncoherent direction-of-arrival (DOA) estimation using different sparse subarrays. In particular, we present a Multiple Measurements Vector…