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The problem of secure communication in Amplify-and-Forward (AF) relay networks with multiple eavesdroppers is considered. Assuming that a receiver (destination or eavesdropper) can decode a message only if the received SNR is above a…

Cryptography and Security · Computer Science 2014-06-19 Siddhartha Sarma , Samar Agnihotri , Joy Kuri

Recently, a class of fractal surface codes (FSCs), has been constructed on fractal lattices with Hausdorff dimension $2+\epsilon$, which admits a fault-tolerant non-Clifford CCZ gate. We investigate the performance of such FSCs as…

Quantum Physics · Physics 2023-09-27 Arpit Dua , Tomas Jochym-O'Connor , Guanyu Zhu

Face Recognition Systems (FRS) are critical for security but remain vulnerable to morphing attacks, where synthetic images blend biometric features from multiple individuals. We propose a novel Single-Image Morphing Attack Detection (S-MAD)…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Ria Shekhawat , Sushrut Patwardhan , Raghavendra Ramachandra , Praveen Kumar Chandaliya , Kishor P. Upla

In recent works on semantic segmentation, there has been a significant focus on designing and integrating transformer-based encoders. However, less attention has been given to transformer-based decoders. We emphasize that the decoder stage…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Jing Xu , Wentao Shi , Pan Gao , Zhengwei Wang , Qizhu Li

With the increasing demand for multi-carrier communication in high-mobility scenarios, it is urgent to design new multi-carrier communication waveforms that can resist large delay-Doppler spreads. Various multi-carrier waveforms in the…

Signal Processing · Electrical Eng. & Systems 2024-06-05 Xingyao Zhang , Haoran Yin , Yanqun Tang , Yu Zhou , Yuqing Liu , Jinming Du , Yipeng Ding

In theory, Polar codes do not exhibit an error floor under successive-cancellation (SC) decoding. In practice, frame error rate (FER) down to $10^{-12}$ has not been reported with a real SC list (SCL) decoder hardware. This paper presents…

Information Theory · Computer Science 2019-04-05 Jiajie Tong , Huazi Zhang , Lingchen Huang , Xiaocheng Liu , Jun Wang

Neuromorphic computing using biologically inspired Spiking Neural Networks (SNNs) is a promising solution to meet Energy-Throughput (ET) efficiency needed for edge computing devices. Neuromorphic hardware architectures that emulate SNNs in…

Neural and Evolutionary Computing · Computer Science 2022-12-06 Mayank Senapati , Manil Dev Gomony , Sherif Eissa , Charlotte Frenkel , Henk Corporaal

Reinforcement-learning (RL) solutions for dynamic spectrum access and radio resource management in Open Radio Access Networks (O-RAN) depend critically on the fidelity of the throughput signal used for training. Analytical or physical-layer…

Networking and Internet Architecture · Computer Science 2026-05-05 Alireza Ebrahimi Dorcheh , Tolunay Seyfi , Ryan Barker , Fatemeh Afghah

This paper presents a fully synthesizable, treebased Address-Event Representation (AER) encoder designed for scalable neuromorphic computing systems. To achieve high throughput while maintaining strict compatibility with commercial EDA…

Systems and Control · Electrical Eng. & Systems 2026-04-08 Yihui Wang , Sheng-Yu Peng , Sahil Shah

Weight-Decomposed Low-Rank Adaptation (DoRA) extends LoRA by decoupling weight magnitude from direction, but its forward pass requires the row-wise norm of W + sBA, a computation that every major framework we surveyed implements by…

Machine Learning · Computer Science 2026-03-24 Alexandra Zelenin , Alexandra Zhuravlyova

Chirp spread spectrum (CSS) is the modulation technique currently employed by Long-Range (LoRa), which is one of the most prominent Internet of things wireless communications standards. The LoRa physical layer (PHY) employs CSS on top of a…

Signal Processing · Electrical Eng. & Systems 2021-06-11 Ivo Bizon Franco de Almeida , Marwa Chafii , Ahmad Nimr , Gerhard Fettweis

In this paper, a new single-carrier waveform, called chirped discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM), is proposed for the sixth generation of communications. As the initial study on this…

Signal Processing · Electrical Eng. & Systems 2025-02-20 Yujie Liu , Yong Liang Guan , David González G. , Halim Yanikomeroglu

LoRa is currently one of the most widely used low-power wide-area network (LPWAN) technologies. The physical layer leverages a chirp spread spectrum modulation to achieve long-range communication with low power consumption. Synchronization…

Signal Processing · Electrical Eng. & Systems 2025-05-06 Joachim Tapparel , Andreas Burg

Recent performance analysis of dual-function radar communications (DFRC) systems, which embed information using phase shift keying (PSK) into multiple-input multiple-output (MIMO) frequency hopping (FH) radar pulses, shows promising results…

Information Theory · Computer Science 2021-02-23 Daniel Wong , Batu K. Chalise , Justin Metcalf , Moeness Amin

This paper investigates a new model to improve the scalability of low-power long-range (LoRa) networks by allowing multiple end devices (EDs) to simultaneously communicate with multiple multi-antenna gateways on the same frequency band and…

Signal Processing · Electrical Eng. & Systems 2021-11-22 The Khai Nguyen , Ha H. Nguyen , Ebrahim Bedeer

LoRaWAN is nowadays one of the most popular protocols for low-power Internet-of-Things communications. Although its physical layer, namely LoRa, has been thoroughly studied in the literature, aspects related to the synchronization of LoRa…

Signal Processing · Electrical Eng. & Systems 2021-08-03 Mathieu Xhonneux , Orion Afisiadis , David Bol , Jérôme Louveaux

In this paper, we propose a spectral-efficient LoRa (SE-LoRa) modulation scheme with a low complexity successive interference cancellation (SIC)-based detector. The proposed communication scheme significantly improves the spectral…

Signal Processing · Electrical Eng. & Systems 2026-01-07 Alireza Maleki , Ebrahim Bedeer , Robert Barton

Semi-definite relaxation (SDR) detector has been demonstrated to be successful in approaching maximum likelihood (ML) performance while the time complexity is only polynomial. We propose a new receiver jointly utilizing the forward error…

Information Theory · Computer Science 2018-08-17 Kun Wang , Zhi Ding

With the rapid advancement of large language models (LLMs), safeguarding intellectual property (IP) has become increasingly critical. To address the challenges of high costs and potential contamination in fingerprint integration, we propose…

Cryptography and Security · Computer Science 2025-09-03 Zhenhua Xu , Zhaokun Yan , Binhan Xu , Xin Tong , Haitao Xu , Yourong Chen , Meng Han

SC-Flip (SCF) is a low-complexity polar code decoding algorithm with improved performance, and is an alternative to high-complexity (CRC)-aided SC-List (CA-SCL) decoding. However, the performance improvement of SCF is limited since it can…

Information Theory · Computer Science 2020-09-22 Furkan Ercan , Thibaud Tonnellier , Nghia Doan , Warren J. Gross