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High sensitivity receiver systems with near ideal polarization sensitivity are highly desirable for development of millimeter and sub-millimeter radio astronomy. Multimoded bolometers provide a unique solution to achieve such sensitivity,…

天体物理仪器与方法 · 物理学 2014-07-10 Akito Kusaka , Edward J. Wollack , Thomas R. Stevenson

We investigate theoretically the efficiency of deep-space optical communication in the presence of background noise. With decreasing average signal power spectral density, a scaling gap opens up between optimized simple-decoded pulse…

量子物理 · 物理学 2018-02-20 Marcin Jarzyna , Wojciech Zwoliński , Michał Jachura , Konrad Banaszek

In the context of Gaussian conditioning, greedy algorithms iteratively select the most informative measurements, given an observed Gaussian random variable. However, the convergence analysis for conditioning Gaussian random variables…

统计理论 · 数学 2025-02-18 Daniel Winkle , Ingo Steinwart , Bernard Haasdonk

A classic problem is the estimation of a set of parameters from measurements collected by only a few sensors. The number of sensors is often limited by physical or economical constraints and their placement is of fundamental importance to…

信息论 · 计算机科学 2015-06-16 Juri Ranieri , Amina Chebira , Martin Vetterli

We study adaptive greedy algorithms for the problems of stochastic set cover with perfect and imperfect coverages. In stochastic set cover with perfect coverage, we are given a set of items and a ground set B. Evaluating an item reveals its…

数据结构与算法 · 计算机科学 2018-06-19 Srinivasan Parthasarathy

This work presents a study on label noise in medical image segmentation by considering a noise model based on Gaussian field deformations. Such noise is of interest because it yields realistic looking segmentations and because it is…

计算机视觉与模式识别 · 计算机科学 2023-07-11 Marcus Nordström , Henrik Hult , Atsuto Maki

Laser-light (coherent-state) modulation is sufficient to achieve the ultimate (Holevo) capacity of classical communication over a lossy and noisy optical channel, but requires a receiver that jointly detects long modulated codewords with…

量子物理 · 物理学 2014-04-14 Masahiro Takeoka , Saikat Guha

This paper considers a challenging scenario of machine type communications, where we assume internet of things (IoT) devices send short packets sporadically to an access point (AP) and the devices are not synchronized in the packet level.…

信息论 · 计算机科学 2024-06-12 Yuanyuan Zhang , Zhengdao Yuan , Qinghua Guo , Zhongyong Wang , Jiangtao Xi , Yanguang Yu , Yonghui Li

In this article, we propose a novel method for sampling potential functions based on noisy observation data of a finite number of observables in quantum canonical ensembles, which leads to the accurate sampling of a wide class of test…

数值分析 · 数学 2020-04-08 Ziheng Chen , Zhennan Zhou

In this paper, we study the non-monotone adaptive submodular maximization problem subject to a cardinality constraint. We first revisit the adaptive random greedy algorithm proposed in \citep{gotovos2015non}, where they show that this…

机器学习 · 计算机科学 2020-12-16 Shaojie Tang

Incorporating time-varying elements into electromagnetic systems has shown to be a powerful approach to challenge well-established performance limits, for example bounds on absorption and impedance matching. So far, the majority of these…

光学 · 物理学 2024-04-09 Zeki Hayran , Francesco Monticone

A reliable support detection is essential for a greedy algorithm to reconstruct a sparse signal accurately from compressed and noisy measurements. This paper proposes a novel support detection method for greedy algorithms, which is referred…

信息论 · 计算机科学 2016-08-24 Namyoon Lee

We propose a greedy minimum mean squared error (MMSE)-based antenna selection algorithm for amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay systems. Assuming equal-power allocation across the multi-stream data, we…

信号处理 · 电气工程与系统科学 2020-03-18 Ming Ding , Shi Liu , Hanwen Luo , Wen Chen

In this Letter we analyze the benefit of digital compensation of fiber nonlinearity, where the digital signal processing is divided between the transmitter and receiver. The application of the Gaussian noise model indicates that, where…

This letter studies the problem of minimizing increasing set functions, or equivalently, maximizing decreasing set functions, over the base of a matroid. This setting has received great interest, since it generalizes several applied…

最优化与控制 · 数学 2021-03-02 Orcun Karaca , Daniel Tihanyi , Maryam Kamgarpour

A polar-coded modulation scheme for deep-space optical communication is proposed. The photon counting Poisson channel with pulse position modulation (PPM) is considered. We use the fact that PPM is particularly well suited to be used with…

信息论 · 计算机科学 2018-12-10 Delcho Donev , Georg Böcherer

This paper introduces a novel precoder design aimed at reducing pilot overhead for effective channel estimation in multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) applications utilizing high-order…

信号处理 · 电气工程与系统科学 2025-04-30 Nilesh Kumar Jha , Huayan Guo , Vincent K. N. Lau

This paper addresses the performance of space-time coding over fading channels with impulsive noise which is known to accurately capture network interference. We use the symmetric alpha stable noise distribution and adopt two models which…

信息论 · 计算机科学 2011-02-17 Junghoon Lee , Cihan Tepedelenlioglu

We consider the problem of distributed estimation under the Bayesian criterion and explore the design of optimal quantizers in such a system. We show that, for a conditionally unbiased and efficient estimator at the fusion center and when…

信息论 · 计算机科学 2015-06-22 Aditya Vempaty , Hao He , Biao Chen , Pramod K. Varshney

A canonical wireless communication system consists of a transmitter and a receiver. The information bit stream is transmitted after coding, modulation, and pulse shaping. Due to the effects of radio frequency (RF) impairments, channel…

信号处理 · 电气工程与系统科学 2020-09-01 Shilian Zheng , Shichuan Chen , Xiaoniu Yang