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The ubiquitous time-delay estimation (TDE) problem becomes nontrivial when sensors are non-co-located and communication between them is limited. Building on the recently proposed "extremum encoding" compression-estimation scheme, we address…

信号处理 · 电气工程与系统科学 2024-12-25 Amir Weiss , Yuval Kochman , Gregory W. Wornell

In this letter, a low-complexity iterative detector with frequency domain equalization is proposed for generalized spatial modulation (GSM) aided single carrier (SC) transmissions operating in frequency selective channels. The detector…

信号处理 · 电气工程与系统科学 2019-04-29 Nuno Souto , Américo Correia

This letter proposes a new splitting receiver design with joint envelope detection (ED) and coherent detection (CD). To characterize its fundamental performance limit, we conduct high signal-to-noise ratio (SNR) analysis on the proposed…

信号处理 · 电气工程与系统科学 2024-10-28 Yanyan Wang , Wanchun Liu , Xiangyun Zhou

With the assistance of singular value decomposition (SVD), a multi-beam directional modulation (DM) scheme based on symmetrical multi-carrier frequency diverse array (FDA) is proposed. The proposed DM scheme is capable of achieving…

信号处理 · 电气工程与系统科学 2019-07-30 Qian Cheng , Vincent Fusco , Jiang Zhu , Shilian Wang , Chao Gu

In this letter, we consider the problem of signal detection in generalized spatial modulation (GSM) using deep neural networks (DNN). We propose a novel modularized DNN architecture that uses small sub-DNNs to detect the active antennas and…

信息论 · 计算机科学 2020-08-25 Bharath Shamasundar , A. Chockalingam

Spectrum sensing (SS) in cognitive radio (CR) systems is of paramount importance to approach the capacity limits for the Secondary Users (SU), while ensuring the undisturbed transmission of Primary Users (PU). In this paper, we formulate a…

最优化与控制 · 数学 2013-04-01 Saeed Bagheri , Anna Scaglione

This paper discusses the problem of extracting spread spectrum hidden data from the perspective of lattice decoding. Since the conventional blind extraction scheme multi-carrier iterative generalize least-squares (M-IGLS) and non-blind…

密码学与安全 · 计算机科学 2023-06-01 Fan Yang , Shanxiang Lyu , Hao Cheng , Jinming Wen , Hao Chen

In cognitive radio systems, the ability to accurately detect primary user's signal is essential to secondary user in order to utilize idle licensed spectrum. Conventional energy detector is a good choice for blind signal detection, while it…

信息论 · 计算机科学 2019-09-09 Jiabao Gao , Xuemei Yi , Caijun Zhong , Xiaoming Chen , Zhaoyang Zhang

In this work, we consider Terahertz (THz) communications with low-resolution uniform quantization and spatial oversampling at the receiver side, corresponding to a single-input multiple-output (SIMO) transmission. We fairly compare…

信息论 · 计算机科学 2025-02-06 Christian Forsch , Peter Zillmann , Osama Alrabadi , Stefan Brueck , Wolfgang Gerstacker

We propose a network architecture to perform efficient scene understanding. This work presents three main novelties: the first is an Improved Guided Upsampling Module that can replace in toto the decoder part in common semantic segmentation…

计算机视觉与模式识别 · 计算机科学 2019-05-23 Davide Mazzini , Raimondo Schettini

In this paper, a novel Extended Cognitive Mobile Terminal (ExCogNet-MT) scheme is presented. In this scheme, a "test bench" at receiver's Mobile Terminal (MT) can estimate the channel Signal to Noise Ratio (SNR) and can detect the jamming…

网络与互联网体系结构 · 计算机科学 2019-08-27 Muhammad Bilal

We investigate a joint visibility region (VR) detection and channel estimation problem in extremely large-scale multiple-input-multiple-output (XL-MIMO) systems, where near-field propagation and spatial non-stationary effects exist. In this…

信号处理 · 电气工程与系统科学 2024-05-22 Wenkang Xu , An Liu , Min-jian Zhao

We introduce a new approach for designing numerical schemes for stochastic differential equations (SDEs). The approach, which we have called direction and norm decomposition method, proposes to approximate the required solution $X_t$ by…

数值分析 · 数学 2017-02-21 C. M. Mora , H. A. Mardones , J. C. Jimenez , M. Selva , R. Biscay

Infrared small target detection (ISTD) has been a critical technology in defense and civilian applications over the past several decades, such as missile warning, maritime surveillance, and disaster monitoring. Nevertheless, moving infrared…

计算机视觉与模式识别 · 计算机科学 2026-04-08 Yian Huang , Qing Qin , Aji Mao , Xiangyu Qiu , Liang Xu , Xian Zhang , Zhenming Peng

Remote sensing change detection (RSCD) is a complex task, where changes often appear at different scales and orientations. Convolutional neural networks (CNNs) are good at capturing local spatial patterns but cannot model global semantics…

计算机视觉与模式识别 · 计算机科学 2026-01-19 Humza Naveed , Xina Zeng , Mitch Bryson , Nagita Mehrseresht

Integrated arrays of Superconducting Nanowire Single Photon Detectors (SNSPDs) have shown capabilities such as Photon Number Resolution, single photon imaging and coincidences detection, and can be effectively used also in other different…

In this paper, we investigate symbol-level precoding (SLP) and efficient decoding techniques for downlink transmission, where we focus on scenarios where the base station (BS) transmits multiple QAM constellation streams to users equipped…

信号处理 · 电气工程与系统科学 2024-10-30 X. Tong , A. Li , L. Lei , X. Hu , F. Dong , S. Chatzinotas , C. Masouros

Multi-user spatial modulation (SM) assisted by sparse code multiple access (SCMA) has been recently proposed to provide uplink high spectral efficiency transmission. The message passing algorithm (MPA) is employed to detect the transmitted…

信号处理 · 电气工程与系统科学 2020-08-19 Ibrahim Al-Nahhal , Octavia A. Dobre , Salama Ikki

Spiking Neural Networks (SNNs) demonstrate significant potential for energy-efficient neuromorphic computing through an event-driven paradigm. While training methods and computational models have greatly advanced, SNNs struggle to achieve…

神经与进化计算 · 计算机科学 2025-10-27 Jieyuan Zhang , Xiaolong Zhou , Shuai Wang , Wenjie Wei , Hanwen Liu , Qian Sun , Malu Zhang , Yang Yang , Haizhou Li

This paper proposes a new method for constructing multidimensional signal constellations (SC), referred to as SCOPT, for high-speed communication systems with enhanced energy efficiency (EE). In contrast to conventional approaches, the…

信息论 · 计算机科学 2026-04-02 Mark Bykhovskiy