Zobrazeno 1 - 10
of 609
pro vyhledávání: '"Almeida, André P."'
We propose receivers for bistatic sensing and communication that exploit a tensor modeling of the received signals. We consider a hybrid scenario where the sensing link knows the transmitted data to estimate the target parameters while the communicat
Externí odkaz:
http://arxiv.org/abs/2412.12435
Beyond diagonal reconfigurable intelligent surface (BD-RIS) is a new architecture for RIS where elements are interconnected to provide more wave manipulation flexibility than traditional single connected RIS, enhancing data rate and coverage. However
Externí odkaz:
http://arxiv.org/abs/2412.06683
In this paper, we consider a double-RIS (D-RIS)-aided flat-fading MIMO system and propose an interference-free channel training and estimation protocol, where the two single-reflection links and the one double-reflection link are estimated separately
Externí odkaz:
http://arxiv.org/abs/2412.05743
The channel estimation problem has been widely discussed in traditional reconfigurable intelligent surface assisted multiple-input multiple-output. However, solutions for channel estimation adapted to beyond diagonal RIS need further study, and few r
Externí odkaz:
http://arxiv.org/abs/2412.02824
Autor:
Benício, Kenneth, Fazal-E-Asim, Sokal, Bruno, de Almeida, André L. F., Makki, Behrooz, Fodor, Gabor, Swindlehurst, A. Lee
We study a monostatic multiple-input multiple-output sensing scenario assisted by a reconfigurable intelligent surface using tensor signal modeling. We propose a method that exploits the intrinsic multidimensional structure of the received echo signa
Externí odkaz:
http://arxiv.org/abs/2412.02778
This paper proposes fast randomized algorithms for computing the Kronecker Tensor Decomposition (KTD). The proposed algorithms can decompose a given tensor into the KTD format much faster than the existing state-of-the-art algorithms. Our principal i
Externí odkaz:
http://arxiv.org/abs/2412.02597
Recent research has delved into advanced designs for reconfigurable intelligent surfaces (RIS) with integrated sensing functions. One promising concept is the hybrid RIS (HRIS), which blends sensing and reflecting meta-atoms. This enables HRIS to pro
Externí odkaz:
http://arxiv.org/abs/2409.19779
Two different frameworks are developed to model the wave field generated by a transducer and propagating through one or more interfaces, and a Quasi-Monte Carlo (QMC) integration scheme is used to numerically evaluate their results. The first method
Externí odkaz:
http://arxiv.org/abs/2408.06765
This paper addresses the channel estimation problem for beyond diagonal reconfigurable intelligent surface (BD-RIS) from a tensor decomposition perspective. We first show that the received pilot signals can be arranged as a three-way tensor, allowing
Externí odkaz:
http://arxiv.org/abs/2407.20402
Autor:
Benício, Kenneth B. A., de Almeida, André L. F., Sokal, Bruno, Fazal-E-Asim, Makki, Behrooz, Fodor, Gabor
This paper proposes a tensor-based parametric modeling and estimation framework in multiple-input multiple-output (MIMO) systems assisted by intelligent reflecting surfaces (IRSs). We present two algorithms that exploit the tensor structure of the re
Externí odkaz:
http://arxiv.org/abs/2306.12309