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Recently, compressive antenna arrays have been considered for DoA estimation with reduced hardware complexity. By utilizing compressive sensing, such arrays employ a linear combining network to combine signals from a larger set of antenna…

信号处理 · 电气工程与系统科学 2018-11-06 Sankalp Pawar , Sebastian Semper , Florian Römer

This paper introduces a novel power allocation and subcarrier optimization algorithm tailored for fixed wireless access (FWA) networks operating under low-rank channel conditions, where the number of subscriber antennas far exceeds those at…

信号处理 · 电气工程与系统科学 2024-10-30 Kamyar Rajabalifardi , Sagnik Bhattacharya , Mehrnaz Afshang , Mohammad Mozaffari , John M. Cioffi

Data Fusion of wireless sensors is a common technique employed in many communication systems. This work focuses on incorporating the principles of non-orthogonal-multiple-access (NOMA) to optimize error performance directly in the choice of…

信息论 · 计算机科学 2023-06-01 Luca Sardellitti , Glen Takahara , Fady Alajaji

A frequency-diverse array (FDA) is an alternative array architecture in which each antenna is preceded by a mixer instead of a phase shifter. The mixers introduce a frequency offset between signals transmitted by each antenna, resulting in…

信号处理 · 电气工程与系统科学 2025-11-19 Marcin Wachowiak , André Bourdoux , Sofie Pollin

A multi-cell cluster-free NOMA framework is proposed, where both intra-cell and inter-cell interference are jointly mitigated via flexible cluster-free successive interference cancellation (SIC) and coordinated beamforming design. The joint…

信号处理 · 电气工程与系统科学 2022-12-26 Xiaoxia Xu , Yuanwei Liu , Qimei Chen , Xidong Mu , Zhiguo Ding

Flexible-geometry arrays have garnered much attention in wireless communications, which dynamically adjust wireless channels to improve the system performance. In this paper, we propose a novel flexible-geometry array for a $360^\circ$…

信号处理 · 电气工程与系统科学 2025-03-17 Songjie Yang , Jiahe Guo , Zilin He , Boyu Ning , Weidong Mei , Zhongpei Zhang , Chadi Assi , Chau Yuen

Similarity search is a fundamental operation for analyzing data series (DS), which are ordered sequences of real values. To enhance efficiency, summarization techniques are employed that reduce the dimensionality of DS. SAX-based approaches…

数据库 · 计算机科学 2024-12-04 Patrick Schäfer , Jakob Brand , Ulf Leser , Botao Peng , Themis Palpanas

The frequency-diverse array (FDA) offers a time-varying beamforming capability without the use of phase shifters. The autoscanning property is achieved by applying a frequency offset between the antennas. This paper analyzes the performance…

信号处理 · 电气工程与系统科学 2025-02-13 Marcin Wachowiak , André Bourdoux , Sofie Pollin

A generalized downlink multi-antenna non-orthogonal multiple access (NOMA) transmission framework is proposed with the novel concept of cluster-free successive interference cancellation (SIC). In contrast to conventional NOMA approaches,…

信息论 · 计算机科学 2022-08-02 Xiaoxia Xu , Yuanwei Liu , Xidong Mu , Qimei Chen , Zhiguo Ding

The estimation of direction of arrival (DOA) is a crucial issue in conventional radar, wireless communication, and integrated sensing and communication (ISAC) systems. However, low-cost systems often suffer from imperfect factors, such as…

信号处理 · 电气工程与系统科学 2024-03-21 Peng Chen , Zhimin Chen , Liang Liu , Yun Chen , Xianbin Wang

Federated edge learning (FEEL) enables wireless devices to collaboratively train a centralised model without sharing raw data, but repeated uplink transmission of model updates makes communication the dominant bottleneck. Over-the-air (OTA)…

信息论 · 计算机科学 2025-12-24 Antonio Tarizzo , Mohammad Kazemi , Deniz Gündüz

A novel electromagnetic (EM) structure termed flexible continuous aperture array (FCAPA) is proposed, which incorporates inherent surface flexibility into typical continuous aperture array (CAPA) systems, thereby enhancing the…

信号处理 · 电气工程与系统科学 2025-11-13 Kuranage Roche Rayan Ranasinghe , Zhaolin Wang , Giuseppe Thadeu Freitas de Abreu , Emil Björnson

This paper studies a downlink system that combines orthogonal-time-frequency-space (OTFS) modulation and sparse code multiple access (SCMA) to support massive connectivity in high-mobility environments. We propose a cross-domain receiver…

信息论 · 计算机科学 2023-01-04 Haifeng Wen , Weijie Yuan , Zilong Liu , Shuangyang Li

This paper advocates a fluid antenna system (FAS)-assisted long-range communication (LoRa-FAS) for Internet-of-Things (IoT) applications. \textcolor{blue}{In the proposed system, FAS provides spatial diversity gains for LoRa, eliminating…

信号处理 · 电气工程与系统科学 2025-07-08 Gaoze Mu , Yanzhao Hou , Kai-Kit Wong , Mingjie Chen , Qimei Cui , Xiaofeng Tao , Ping Zhang

In this paper, pattern division multiple access with large-scale antenna array (LSA-PDMA) is proposed as a novel non-orthogonal multiple access (NOMA) scheme. In the proposed scheme, pattern is designed in both beam domain and power domain…

信息论 · 计算机科学 2017-03-22 Peng Li , Yanxiang Jiang , Shaoli Kang , Fuchun Zheng , Xiaohu You

Sparse antenna array sensing of source/target via direction of arrival (DoA) estimation motivates design of the sensing framework in joint communication and sensing (JCAS) systems for sixth generation (6G) communication systems. Recently,…

信号处理 · 电气工程与系统科学 2025-12-05 Siva Aditya Gooty , Hessam Mahdavifar

Multi-pod systolic arrays are emerging as the architecture of choice in DNN inference accelerators. Despite their potential, designing multi-pod systolic arrays to maximize effective throughput/Watt (i.e., throughput/Watt adjusted when…

硬件体系结构 · 计算机科学 2022-03-23 Ahmet Caner Yüzügüler , Canberk Sönmez , Mario Drumond , Yunho Oh , Babak Falsafi , Pascal Frossard

Operator learning seeks to approximate mappings from input functions to output solutions, particularly in the context of partial differential equations (PDEs). While recent advances such as DeepONet and Fourier Neural Operator (FNO) have…

机器学习 · 计算机科学 2025-05-27 Yile Li , Shandian Zhe

Low-Rank Adaptation (LoRA) has emerged as a widely adopted technique in text-to-image models, enabling precise rendering of multiple distinct elements, such as characters and styles, in multi-concept image generation. However, current…

计算机视觉与模式识别 · 计算机科学 2025-02-10 Xiandong Zou , Mingzhu Shen , Christos-Savvas Bouganis , Yiren Zhao

Sparse arrays have emerged as a popular alternative to the conventional uniform linear array (ULA) due to the enhanced degrees of freedom (DOF) and superior resolution offered by them. In the passive setting, these advantages are realized…

信号处理 · 电气工程与系统科学 2023-01-05 Pulak Sarangi , Mehmet Can Hucumenoglu , Robin Rajamaki , Piya Pal