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We present a new family of one-coincidence sequence sets suitable for frequency hopping code division multiple access (FH-CDMA) systems with dispersed (low density) sequence elements. These sets are derived from one-coincidence prime…

Information Theory · Computer Science 2017-12-11 Lenny Fukshansky , Ahmad Adib Shaar

This paper considers the analysis and optimization of a frequency-hopping ad hoc network with a finite number of mobiles and finite spatial extent. The mobiles communicate using coded continuous-phase frequency-shift keying (CPFSK)…

Information Theory · Computer Science 2012-09-11 Matthew C. Valenti , Don Torrieri , Salvatore Talarico

In this paper, we study the performance of an amplify-and-forward (AF) based analog network coding (ANC) relay scheme in a multi-hop wireless network under individual power constraints. In the first part, a unicast scenario is considered.…

Information Theory · Computer Science 2012-03-23 Binyue Liu , Ning Cai

It is known that, interference classification plays an important role in protecting the authorized communication system and avoiding its performance degradation in the hostile environment. In this paper, the interference classification…

Networking and Internet Architecture · Computer Science 2022-10-19 Changzhi Xu , Jingya Ren , Wanxin Yu , Yi Jin , Zhenxin Cao , Xiaogang Wu , Weiheng Jiang

This paper proposes a new method for optimizing frequency-hopping ad hoc networks in the presence of Rayleigh fading. It is assumed that the system uses a capacity-approaching code (e.g., turbo or LDPC) and noncoherent binary…

Information Theory · Computer Science 2012-07-17 Salvatore Talarico , Matthew C. Valenti , Don Torrieri

Enabled by the advancement in radio frequency technologies, the convergence of radar and communication systems becomes increasingly promising and is envisioned as a key feature of future 6G networks. Recently, the frequency-hopping (FH)…

Signal Processing · Electrical Eng. & Systems 2020-10-20 Kai Wu , J. Andrew Zhang , Xiaojing Huang , Y. Jay Guo

We study the performance of multi-hop networks composed of millimeter wave (MMW)-based radio frequency (RF) and free-space optical (FSO) links. The results are obtained in the cases with and without hybrid automatic repeat request (HARQ).…

Information Theory · Computer Science 2017-03-22 Behrooz Makki , Tommy Svensson , Maite Brandt-Pearce , Mohamed-Slim Alouini

This paper studies the performance of multi-hop and mesh networks composed of millimeter wave (MMW)-based radio frequency (RF) and free-space optical (FSO) links. The results are obtained in cases with and without hybrid automatic repeat…

Information Theory · Computer Science 2017-03-29 Behrooz Makki , Tommy Svensson , Maite Brandt-Pearce , Mohamed-Slim Alouini

A database of fetal heart rate (FHR) time series measured from 7221 patients during labor is analyzed with the aim of learning the types of features of these recordings that are informative of low cord pH. Our 'highly comparative' analysis…

Machine Learning · Computer Science 2014-12-04 B. D. Fulcher , A. E. Georgieva , C. W. G. Redman , Nick S. Jones

This paper studies the affine frequency division multiplexing (AFDM)-empowered sparse code multiple access (SCMA) system, referred to as AFDM-SCMA, for supporting massive connectivity in high-mobility environments. First, by placing the…

Information Theory · Computer Science 2024-06-12 Qu Luo , Pei Xiao , Zilong Liu , Ziwei Wan , Thomos Nikolaos , Zhen Gao , Ziming He

In this paper, a multi-user multi-hop hybrid FSO / RF system is presented. This structure is consisted of two main parts. The main motivation of presenting this structure is communication in long-range impassable links or some specific…

Signal Processing · Electrical Eng. & Systems 2018-11-21 Mohammad Ali Amirabadi

This paper considers ad hoc networks that use the combination of coded continuous-phase frequency-shift keying (CPFSK) and frequency-hopping multiple access. Although CPFSK has a compact spectrum, some of the signal power inevitably…

Information Theory · Computer Science 2015-04-10 Matthew C. Valenti , Don Torrieri , Salvatore Talarico

In wireless relay networks, noise at the relays can be correlated possibly due to common interference or noise propagation from preceding hops. In this work we consider a parallel relay network with noise correlation. For the relay strategy…

Information Theory · Computer Science 2007-07-13 Krishna S. Gomadam , Syed A. Jafar

Beam hopping (BH) and carrier aggregation (CA) are two promising technologies for the next generation satellite communication systems to achieve several orders of magnitude increase in system capacity and to significantly improve the…

Signal Processing · Electrical Eng. & Systems 2023-05-30 Mirza Golam Kibria , Hayder Al-Hraishawi , Eva Lagunas , Symeon Chatzinotas , Björn Ottersten

Two major areas of modern radio astronomy, namely, explosive astrophysical transient phenomena and observations of cosmological structures, are driving the design of aperture arrays towards large numbers of low-cost elements consisting of…

Instrumentation and Methods for Astrophysics · Physics 2025-01-15 Nithyanandan Thyagarajan

We introduce a new method for detection of long-range cross-correlations and multifractality - multifractal height cross-correlation analysis (MF-HXA) - based on scaling of qth order covariances. MF-HXA is a bivariate generalization of the…

Statistical Finance · Quantitative Finance 2012-05-24 Ladislav Kristoufek

Discriminative Correlation Filters based tracking algorithms exploiting conventional handcrafted features have achieved impressive results both in terms of accuracy and robustness. Template handcrafted features have shown excellent…

Computer Vision and Pattern Recognition · Computer Science 2018-07-20 Peng Gao , Yipeng Ma , Chao Li , Ke Song , Fei Wang , Liyi Xiao

In massive multiple-input multiple-output (MIMO) systems, the downlink transmission performance heavily relies on accurate channel state information (CSI). Constrained by the transmitted power, user equipment always transmits sounding…

Signal Processing · Electrical Eng. & Systems 2024-10-23 Yiming Zhu , Jiawei Zhuang , Gangle Sun , Hongwei Hou , Li You , Wenjin Wang

Feature selection is a process of choosing a subset of relevant features so that the quality of prediction models can be improved. An extensive body of work exists on information-theoretic feature selection, based on maximizing Mutual…

Machine Learning · Computer Science 2016-12-05 Jilin Wu , Soumyajit Gupta , Chandrajit Bajaj

Few-shot learning in remote sensing remains challenging due to three factors: the scarcity of labeled data, substantial domain shifts, and the multi-scale nature of geospatial objects. To address these issues, we introduce Adaptive…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Anurag Kaushish , Ayan Sar , Sampurna Roy , Sudeshna Chakraborty , Prashant Trivedi , Tanupriya Choudhury , Kanav Gupta