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We study the computational phase transition in a multi-frequency group synchronization problem, where pairwise relative measurements of group elements are observed across multiple frequency channels and corrupted by Gaussian noise. Using…

Statistics Theory · Mathematics 2026-01-29 Zhangsong Li

Building oscillator based computing systems with emerging nano-device technologies has become a promising solution for unconventional computing tasks like computer vision and pattern recognition. However, simulation and analysis of these…

Emerging Technologies · Computer Science 2016-11-15 Yan Fang , Victor V. Yashin , Donald M. Chiarulli , Steven P. Levitan

Phase Frequency Detectors (PFDs) are essential components in Phase-Locked Loop (PLL) and Delay-Locked Loop (DLL) systems, responsible for comparing phase and frequency differences and generating up/down signals to regulate charge pumps…

Emerging Technologies · Computer Science 2025-08-26 Dhandeep Challagundla , Venkata Krishna Vamsi Sundarapu , Ignatius Bezzam , Riadul Islam

In this paper, we investigate the impact of phase noise on the secrecy performance of downlink massive MIMO systems in the presence of a passive multiple-antenna eavesdropper. Thereby, for the base station (BS) and the legitimate users, the…

Information Theory · Computer Science 2016-11-17 Jun Zhu , Robert Schober , Vijay K. Bhargava

This paper reports main results of the phase noise comparison that has been performed between october 2005 and december 2006, using two oscillators at 5 and 100 MHz and un DRO at 3.5 GHz. The problem is not to compare the performances of…

Orthogonal least squares (OLS)-type algorithms are efficient in reconstructing sparse signals, which include the well-known OLS, multiple OLS (MOLS) and block OLS (BOLS). In this paper, we first investigate the noiseless exact recovery…

Signal Processing · Electrical Eng. & Systems 2022-10-13 L. Lu , W. Xu , Y. Wang , Z. Tian

Frequency offsets-compensated least mean squares (FO-LMS) algorithm is a generic method for estimating a wireless channel under carrier and sampling frequency offsets when the transmitted signal is beforehand known to the receiver. The…

Signal Processing · Electrical Eng. & Systems 2025-12-12 Karel Pärlin , Aaron Byman , Tommi Meriläinen , Taneli Riihonen

In this paper, the effects of oscillator phase-noise with arbitrary spectral characteristics on self-interference cancellation capability of a full-duplex radio transceiver are addressed, and design considerations are given for oscillator…

Information Theory · Computer Science 2014-12-04 Ville Syrjälä , Koji Yamamoto , Mikko Valkama

This paper addresses the issue of phase noise in OFDM systems. Phase noise (PHN) is a transceiver impairment resulting from the non-idealities of the local oscillator. We present a case for designing a turbo receiver for systems corrupted…

Information Theory · Computer Science 2010-01-14 Gokul Sridharan , Teng Joon Lim

Nonlinear phase noise, often called the Gordon-Mollenauer effect, can be compensated electronically by subtracting from the received phase a correction proportional to the received intensity. The optimal scaling factor is derived…

Optics · Physics 2013-01-15 Keang-Po Ho , Joseph M. Kahn

In multiple-input multiple-output communications, channel estimation is paramount to keep base stations and users on track. This paper proposes a novel PCA-based-principal component analysis-channel estimation approach for MIMO orthogonal…

Information Theory · Computer Science 2023-10-23 Jonathan Aguiar Soares , Kayol Soares Mayer , Pedro Benevenuto Valadares , Dalton Soares Arantes

Logan's graphical analysis (LGA) is a widely-used approach for quantification of biochemical and physiological processes from Positron emission tomography (PET) image data. A well-noted problem associated with the LGA method is the bias in…

Quantitative Methods · Quantitative Biology 2009-04-20 Hongbin Guo , Kewei Chen , Rosemary A Renaut , Eric M Reiman

We study the stability of a stochastic oscillator whose frequency is a random process with finite time memory represented by an Ornstein-Uhlenbeck noise. This system undergoes a noise-induced bifurcation when the amplitude of the noise…

Statistical Mechanics · Physics 2014-12-19 Kirone Mallick , Pierre-Emmanuel Peyneau

In this report, we lay the foundation for amplitude noise and phase noise analysis in nonlinear devices. We build a theoretical framework that helps us to analyze extremely difficult problems which include both nonlinearity and noise of…

Systems and Control · Electrical Eng. & Systems 2024-07-17 Meysam Bahmanian

Cell-free massive multiple-input multiple-output (mMIMO) networks enhance coverage and spectral efficiency (SE) by distributing antennas across access points (APs) with phase coherence between APs. However, the use of cost-efficient local…

Signal Processing · Electrical Eng. & Systems 2025-06-26 Yibo Wu , Luca Sanguinetti , Musa Furkan Keskin , Ulf Gustavsson , Alexandre Graell i Amat , Henk Wymeersch

Integrated circuit implementations of coupled oscillator networks have recently gained increased attention. The focus is usually on using these networks for analogue computing, for example for solving computational optimization tasks. For…

Emerging Technologies · Computer Science 2025-05-16 S. Y. Neyaz , A. Ashok , M. Schiek , C. Grewing , A. Zambanini , S. van Waasen

The path-loss exponent (PLE) is one of the most crucial parameters in wireless communications to characterize the propagation of fading channels. It is currently adopted for many different kinds of wireless network problems such as power…

Signal Processing · Electrical Eng. & Systems 2018-07-12 Yongchang Hu , Geert Leus

We present a new finite-time analysis of the estimation error of the Ordinary Least Squares (OLS) estimator for stable linear time-invariant systems. We characterize the number of observed samples (the length of the observed trajectory)…

Statistics Theory · Mathematics 2020-03-27 Yassir Jedra , Alexandre Proutiere

In multitemporal InSAR, phase linking (PL) refers to the estimation of a single-reference interferometric phase history for distributed scatterers (DS) from the information contained in the sample coherence matrix. Because the phase…

Signal Processing · Electrical Eng. & Systems 2026-04-22 Magnus Heimpel , Irena Hajnsek , Othmar Frey

In this letter we report on the effects of pixel crosstalk on the experimental realization of a reported encoding method (Opt. Lett. 39, 1740 (2014)) with PA-LCoS SLMs. We found that, under Nyquist limit condition, about 70% of a single…

Image and Video Processing · Electrical Eng. & Systems 2019-03-15 Miguel Carbonell-Leal , Omel Mendoza-Yero
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