A stochastic gradient descent approach for hybrid mmWave beamforming with blockage and CSI-error robustness

H Iimori, GTF De Abreu, O Taghizadeh, RA Stoica… - IEEE …, 2021 - ieeexplore.ieee.org
In this study, we consider the downlink beamforming problem in millimeter wave (mmWave)
systems subjected to both path blockages and imperfect channel state information (CSI) …

Uplink signal detection for scalable cell-free massive MIMO systems with robustness to rate-limited fronthaul

K Ando, H Iimori, T Takahashi, K Ishibashi… - IEEE …, 2021 - ieeexplore.ieee.org
We consider the problem of uplink signal detection in scalable cell-free mMIMO (CF-
mMIMO) systems subject to limited fronthaul link capacity and highly correlated channel …

Scalable quadrature spatial modulation

HS Rou, GTF de Abreu, H Iimori… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
We consider quadrature spatial modulation (QSM) schemes, which achieve high spectral
efficiency (SE) via the dispersion of a relatively small number of-ary modulated symbols over …

Blind Bistatic Radar Parameter Estimation for AFDM Systems in Doubly-Dispersive Channels

KRR Ranasinghe, K Ando, HS Rou… - arxiv preprint arxiv …, 2024 - arxiv.org
We propose a novel method for blind bistatic radar parameter estimation (RPE), which
enables integrated sensing and communications (ISAC) by allowing passive (receive) base …

Online Dominant Generalized Eigenvectors Extraction via a Randomized Algorithm

H Cai, M Kaloorazi, J Chen, W Chen… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
This paper is concerned with online algorithms for the generalized Hermitian eigenvalue
problem (GHEP). We first present an algorithm based on randomization, termed alternate …

An Efficient Compressive Sensing Event-Detection Scheme for Internet of Things System Based on Sparse-Graph Codes

J Cai, X Xu, H Zhu, J Cheng - Sensors, 2023 - mdpi.com
This work studied the event-detection problem in an Internet of Things (IoT) system, where a
group of sensor nodes are placed in the region of interest to capture sparse active event …

An iterative discrete least square estimator with dynamic parameterization via deep-unfolding

K Ando, H Iimori, HS Rou, GTF de Abreu… - 2022 56th Asilomar …, 2022 - ieeexplore.ieee.org
We propose a new dynamic parameterization approach via deep unfolding as an extension
of the recently-introduced iterative discrete least square (IDLS) scheme, shown to elegantly …

Determining a precoder for wireless communications

RA Stoica, ST Motlagh, V Nangia, AR Ali - US Patent 11,863,259, 2024 - Google Patents
2021-10-27 Assigned to LENOVO (UNITED STATES) INC. reassignment LENOVO (UNITED
STATES) INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR …

Precoding wireless communications

RA Stoica, ST Motlagh, V Nangia, AR Ali - US Patent 11,838,225, 2023 - Google Patents
2023-03-21 Assigned to LENOVO (UNITED STATES) INC. reassignment LENOVO (UNITED
STATES) INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR …

[IDÉZET][C] DETERMINING A PRECORDER FOR WIRELESS COMMUNICATIONS

SRA DE, TMS DE, ALIALIR DE