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Coherent imaging systems like synthetic aperture radar are susceptible to multiplicative noise that makes applications like automatic target recognition challenging. In this paper, NeighCNN, a deep learning-based speckle reduction algorithm…

Image and Video Processing · Electrical Eng. & Systems 2021-08-27 Praveen Ravirathinam , Darshan Agrawal , J. Jennifer Ranjani

Fraud detection is crucial in social service networks to maintain user trust and improve service network security. Existing spectral graph-based methods address this challenge by leveraging different graph filters to capture signals with…

Machine Learning · Computer Science 2025-05-05 Wenxin Zhang , Ding Xu , Xi Xuan , Lei Jiang , Guangzhen Yao , Renda Han , Xiangxiang Lang , Cuicui Luo

This paper proposes novel spectrum sensing algorithms for cognitive radio networks. By assuming known transmitter pulse shaping filter, synchronous and asynchronous receiver scenarios have been considered. For each of these scenarios, the…

Optimization and Control · Mathematics 2013-12-31 Tadilo Endeshaw Bogale , Luc Vandendorpe

Sphere decoding (SD) is a low complexity maximum likelihood (ML) detection algorithm, which has been adapted for different linear channels in digital communications. The complexity of the SD has been shown to be exponential in some cases,…

Information Theory · Computer Science 2007-07-13 Luay Azzam , Ender Ayanoglu

The significance of multi-scale features has been gradually recognized by the edge detection community. However, the fusion of multi-scale features increases the complexity of the model, which is not friendly to practical application. In…

Computer Vision and Pattern Recognition · Computer Science 2025-01-10 Yachuan Li , Zongmin Li , Xavier Soria P. , Chaozhi Yang , Qian Xiao , Yun Bai , Hua Li , Xiangdong Wang

Spectrum sensing is the major challenge in the cognitive radio (CR). We propose to learn local feature and use it as the prior knowledge to improve the detection performance. We define the local feature as the leading eigenvector derived…

Information Theory · Computer Science 2011-04-13 Peng Zhang , Robert Qiu

This paper considers the problem of binary distributed detection of a known signal in correlated Gaussian sensing noise in a wireless sensor network, where the sensors are restricted to use likelihood ratio test (LRT), and communicate with…

Information Theory · Computer Science 2016-01-20 Nahal Maleki , Azadeh Vosoughi , Nazanin Rahnavard

This work introduces FiRE/FiRE.1, a novel sketching-based algorithm for anomaly detection to quickly identify rare cell sub-populations in large-scale single-cell RNA sequencing data. This method demonstrated superior performance against…

Machine Learning · Computer Science 2025-12-04 Aashi Jindal

A training symbol-based equalization algorithm is proposed for polarization de-multiplexing in quadrature duobinary (QDB) modulated polarization division multiplexedfaster-than-Nyquist (FTN) coherent optical systems. The proposed algorithm…

Signal Processing · Electrical Eng. & Systems 2018-01-08 S. Zhang , D. Chang , O. A. Dobre , O. Omomukuyo , X. Lin , R. Venkatesan

Radio Frequency Interference (RFI) poses a significant challenge in radio astronomy, arising from terrestrial and celestial sources, disrupting observations conducted by radio telescopes. Addressing RFI involves intricate heuristic…

Neural and Evolutionary Computing · Computer Science 2024-12-09 Nicholas J. Pritchard , Andreas Wicenec , Mohammed Bennamoun , Richard Dodson

Faster-than-Nyquist (FTN) signaling is a nonorthogonal transmission technique, which brings in intentional inter-symbol interference. This way it can significantly enhance spectral efficiency for practical pulse shapes such as the root…

Information Theory · Computer Science 2023-05-23 Zichao Zhang , Melda Yuksel , Halim Yanikomeroglu , Benjamin K. Ng , Chan-Tong Lam

Small-Angle Neutron Scattering (SANS) data analysis often relies on fixed-width binning schemes that overlook variations in signal strength and structural complexity. We introduce a statistically grounded approach based on the…

Data Analysis, Statistics and Probability · Physics 2025-10-29 Jessie E. An , Chi-Huan Tung , Changwoo Do , Wei-Ren Chen

Ternary Neural Networks (TNNs) have received much attention due to being potentially orders of magnitude faster in inference, as well as more power efficient, than full-precision counterparts. However, 2 bits are required to encode the…

Machine Learning · Computer Science 2021-07-30 Peng Chen , Bohan Zhuang , Chunhua Shen

Accelerating deep neural network (DNN) inference on resource-limited devices is one of the most important barriers to ensuring a wider and more inclusive adoption. To alleviate this, DNN binary quantization for faster convolution and memory…

Machine Learning · Computer Science 2021-08-24 Meshia Cédric Oveneke

Molecular communication (MC) is a promising paradigm for applications where traditional electromagnetic communications are impractical. However, decoding chemical signals, especially in multi-transmitter systems, remains a key challenge due…

Signal Processing · Electrical Eng. & Systems 2025-11-05 Vivien Walter , Dadi Bi , Daniel L. Ruiz Blanco , Yansha Deng

Affine frequency division multiplexing (AFDM), an emerging multi-carrier modulation scheme, has garnered significant attention due to its resilience to Doppler shifts and capability to achieve full diversity in doubly dispersive channels.…

Signal Processing · Electrical Eng. & Systems 2026-04-17 Taohe Chen , Yin Xu , Tianyao Ma , Aimin Tang , Qu Luo , Dazhi He , Wenjun Zhang

This paper deals with spectrum sensing in Cognitive Radios to enable unlicensed secondary users to opportunistically access a licensed band. The ability to detect the presence of a primary user at a low signal to noise ratio (SNR) is a…

Other Computer Science · Computer Science 2013-12-19 Hemant Saggar , D. K. Mehra

This paper proposes a novel and simple orthogonal faster than Nyquist (OFTN) data transmission and detection approach for a single input multiple output (SIMO) system. It is assumed that the signal having a bandwidth $B$ is transmitted…

Information Theory · Computer Science 2017-07-25 Tadilo Endeshaw Bogale , Long Bao Le , Xianbin Wang , Luc Vandendorpe

Given an inhomogeneous chain embedded in a noisy image, we consider the conditions under which such an embedded chain is detectable. Many applications, such as detecting moving objects, detecting ship wakes, can be abstracted as the…

Statistics Theory · Mathematics 2020-09-22 Kai Ni , Shanshan Cao , Xiaoming Huo

Flexible grid optical networks allow a better exploitation of fiber capacity, by enabling a denser frequency allocation. A tighter channel spacing, however, requires narrower filters, which increase linear intersymbol interference (ISI),…

Information Theory · Computer Science 2023-07-19 Tommaso Foggi , Giulio Colavolpe , Alberto Bononi , Paolo Serena