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Conventional multiuser detection techniques either require a large number of antennas at the receiver for a desired performance, or they are too complex for practical implementation. Moreover, many of these techniques, such as successive…

信号处理 · 电气工程与系统科学 2022-01-19 Matthias Mehlhose , Daniyal Amir Awan , Renato L. G. Cavalcante , Martin Kurras , Slawomir Stanczak

The main challenge of massive machine-type communications (mMTC) is the joint activity and signal detection of devices. The mMTC scenario with many devices transmitting data intermittently at low data rates and via very short packets…

信息论 · 计算机科学 2020-07-28 R. B. Di Renna , R. C. de Lamare

Lattice reduction (LR) aided multiple-input-multiple-out (MIMO) linear detection can achieve the maximum receive diversity of the maximum likelihood detection (MLD). By emloying the most commonly used Lenstra, Lenstra, and L. Lovasz (LLL)…

信息论 · 计算机科学 2013-04-25 Keke Zu , Rodrigo C. de Lamare

An adaptive delay-tolerant distributed space-time coding (DSTC) scheme that exploits feedback is proposed for two-hop cooperative MIMO networks. Maximum likelihood (ML) receivers and adjustable code matrices are considered subject to a…

信息论 · 计算机科学 2014-05-20 Tong Peng , Rodrigo C. de Lamare

Based on the methodological similarity between sparse signal reconstruction and system identification, a new approach for sparse signal reconstruction in compressive sensing (CS) is proposed in this paper. This approach employs a stochastic…

信息论 · 计算机科学 2015-06-15 Jian Jin , Yuantao Gu , Shunliang Mei

Recently, the l0-least mean square (l0-LMS) algorithm has been proposed to identify sparse linear systems by employing a sparsity-promoting continuous function as an approximation of l0 pseudonorm penalty. However, the performance of this…

信息论 · 计算机科学 2016-05-11 Bijit Kumar Das , Mrityunjoy Chakraborty

The limited over-the-air (OTA) pilot symbols in multiple-input-multiple-output orthogonal-frequency-division-multiplexing (MIMO-OFDM) systems presents a major challenge for detecting transmitted data symbols at the receiver, especially for…

信号处理 · 电气工程与系统科学 2023-10-10 Jiarui Xu , Lianjun Li , Lizhong Zheng , Lingjia Liu

An adaptive randomized distributed space-time coding (DSTC) scheme and algorithms are proposed for two-hop cooperative MIMO networks. Linear minimum mean square error (MMSE) receivers and an amplify-and-forward (AF) cooperation strategy are…

信息论 · 计算机科学 2013-03-19 T. Peng , R. C. de Lamare , A. Schmeink

The main purpose of a control allocator is to distribute a total control effort among redundant actuators. This paper proposes a discrete adaptive control allocator for over-actuated sampled-data systems in the presence of actuator…

系统与控制 · 电气工程与系统科学 2021-01-27 Seyed Shahabaldin Tohidi , Yildiray Yildiz

A space-time adaptive decision feedback (DF) receiver using recurrent neural networks (RNN) is proposed for joint equalization and interference suppression in direct-sequence code-division-multiple-access (DS-CDMA) systems equipped with…

信息论 · 计算机科学 2013-01-23 Rodrigo C. de Lamare , Raimundo Sampaio-Neto

Pre-trained Transformers, through in-context learning (ICL), have demonstrated exceptional capabilities to adapt to new tasks using example prompts \textit{without model update}. Transformer-based wireless receivers, where prompts consist…

信息论 · 计算机科学 2024-11-13 Li Fan , Jing Yang , Cong Shen

The rapid growth of the low-altitude economy has resulted in a significant increase in the number of Low, slow, and small (LLS) unmanned aerial vehicles (UAVs), raising critical challenges for secure airspace management and reliable…

系统与控制 · 电气工程与系统科学 2025-10-13 Tianhao Liang , Mu Jia , Tingting Zhang , Junting Chen , Longyu Zhou , Tony Q. S. Quek , Pooi-Yuen Kam

Adaptive Power Allocation (PA) algorithms with different criteria for a cooperative Multiple-Input Multiple-Output (MIMO) network equipped with Distributed Space-Time Coding (DSTC) are proposed and evaluated. Joint constrained optimization…

信息论 · 计算机科学 2014-01-21 T. Peng , R. C. de Lamare , A. Schmeink

Integrated sensing and communication (ISAC) techniques can leverage existing, wide-coverage communication networks to perform sensing tasks, enabling large-scale and low-cost target sensing. However, the inherent randomness of communication…

信号处理 · 电气工程与系统科学 2026-05-25 Kaitao Meng , Kawon Han , Christos Masouros , Fan Liu

Retrieval-Augmented Large Language Models (LLMs), which incorporate the non-parametric knowledge from external knowledge bases into LLMs, have emerged as a promising approach to enhancing response accuracy in several tasks, such as…

计算与语言 · 计算机科学 2024-03-29 Soyeong Jeong , Jinheon Baek , Sukmin Cho , Sung Ju Hwang , Jong C. Park

Compressive sensing (CS) can effectively recover a signal when it is sparse in some discrete atoms. However, in some applications, signals are sparse in a continuous parameter space, e.g., frequency space, rather than discrete atoms.…

信号处理 · 电气工程与系统科学 2018-08-30 Tianyao Huang , Yimin Liu , Huadong Meng , Xiqin Wang

Object-centric learning (OCL) extracts the representation of objects with slots, offering an exceptional blend of flexibility and interpretability for abstracting low-level perceptual features. A widely adopted method within OCL is slot…

计算机视觉与模式识别 · 计算机科学 2024-06-14 Ke Fan , Zechen Bai , Tianjun Xiao , Tong He , Max Horn , Yanwei Fu , Francesco Locatello , Zheng Zhang

Convolutional dictionary learning (CDL) estimates shift invariant basis adapted to multidimensional data. CDL has proven useful for image denoising or inpainting, as well as for pattern discovery on multivariate signals. As estimated…

机器学习 · 计算机科学 2019-01-29 Thomas Moreau , Alexandre Gramfort

This paper presents adaptive link selection algorithms for distributed estimation and considers their application to wireless sensor networks and smart grids. In particular, exhaustive search--based least--mean--squares(LMS)/recursive least…

系统与控制 · 计算机科学 2015-10-20 S. Xu , R. C. de Lamare , H. V. Poor

This paper presents adaptive conformal selection (ACS), an interactive framework for model-free selection with guaranteed error control. Building on conformal selection (Jin and Cand\`es, 2023b), ACS generalizes the approach to support…

统计方法学 · 统计学 2025-07-22 Yu Gui , Ying Jin , Yash Nair , Zhimei Ren