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Millimeter wave systems suffer from high power consumption and are constrained to use low resolution quantizers --digital to analog and analog to digital converters (DACs and ADCs). However, low resolution quantization leads to reduced data…

信息论 · 计算机科学 2022-02-08 Abbas Khalili , Elza Erkip , Sundeep Rangan

As it stands today, the search for extraterrestrial intelligence (SETI) is highly dependent on our ability to detect interesting candidate signals, or technosignatures, in radio telescope observations and distinguish these from human radio…

This paper considers cooperative spectrum sensing algorithms for Cognitive Radios which focus on reducing the number of samples to make a reliable detection. We develop an energy efficient detector with low detection delay using…

信息论 · 计算机科学 2013-08-29 Jithin K. Sreedharan , Vinod Sharma

Multi-array systems are widely used in sonar and radar applications. They can improve communication speeds, target discrimination, and imaging. In the case of a multibeam sonar system that can operate two receiving arrays, we derive new…

应用统计 · 统计学 2024-02-28 Olivier Lerda , Ammar Mian , Guillaume Ginolhac , Jean-Philippe Ovarlez , Didier Charlot

This paper is concerned with estimating unknown multi-dimensional frequencies from linear compressive measurements. This is accomplished by employing the recently proposed atomic norm minimization framework to recover these frequencies…

信号处理 · 电气工程与系统科学 2018-11-07 Sebastian Semper , Florian Römer

This paper studies the problem of deciding on the absence (i.e., null hypothesis, $\mathcal{H}_0$) or presence (i.e., alternative hypothesis, $\mathcal{H}_1$) of an unknown signal embedded in the received signal in a multiple-input,…

信息论 · 计算机科学 2021-09-07 M. A. Teeti

Interferometric Synthetic Aperture Radar (InSAR) imagery for estimating ground movement, based on microwaves reflected off ground targets is gaining increasing importance in remote sensing. However, noise corrupts microwave reflections…

图像与视频处理 · 电气工程与系统科学 2020-01-22 Subhayan Mukherjee , Aaron Zimmer , Navaneeth Kamballur Kottayil , Xinyao Sun , Parwant Ghuman , Irene Cheng

This paper presents an analytical framework for the data detection in massive multiple-input multiple-output uplink systems with 1-bit analog-to-digital converters (ADCs). Considering the single-user case, we provide closed-form expressions…

信息论 · 计算机科学 2021-07-27 Italo Atzeni , Antti Tölli

This paper considers a multiple-input multiple-output (MIMO) system with low-resolution analog-to-digital converters (ADCs). In this system, the paper presents a new MIMO detection approach using coding theory. The principal idea of the…

信息论 · 计算机科学 2016-10-26 Song-Nam Hong , Yo-Seb Jeon , Namyoon Lee

This paper addresses the problem of detecting a moving target embedded in Gaussian noise with an unknown covariance matrix for frequency diverse array multiple-input multiple-output (FDA-MIMO) radar. To end it, assume that obtaining a set…

信号处理 · 电气工程与系统科学 2024-03-22 Ping Li , Bang Huang , Wen-Qin Wang

One of the classical approaches for estimating the frequencies and damping factors in a spectrally sparse signal is the MUSIC algorithm, which exploits the low-rank structure of an autocorrelation matrix. Low-rank matrices have also…

信息论 · 计算机科学 2020-08-20 Shuang Li , Hassan Mansour , Michael B. Wakin

The use of low-resolution data converters in the radio-frequency (RF) chains of all-digital massive multiple-input multiple-output (MIMO) basestations promises significant reductions in power consumption, hardware costs, and interconnect…

信号处理 · 电气工程与系统科学 2020-09-07 Seyed Hadi Mirfarshbafan , Mahdi Shabany , Seyed Alireza Nezamalhosseini , Christoph Studer

Line spectral estimation is the problem of recovering the frequencies and amplitudes of a mixture of a few sinusoids from equispaced samples. However, in a variety of signal processing problems arising in imaging, radar, and localization we…

信息论 · 计算机科学 2016-09-28 Reinhard Heckel , Mahdi Soltanolkotabi

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…

图像与视频处理 · 电气工程与系统科学 2021-08-27 Praveen Ravirathinam , Darshan Agrawal , J. Jennifer Ranjani

We present a technique that improves the signal-to-noise-ratio (SNR) of range-finding, sensing, and other light-detection applications. The technique filters out low photon numbers using photon-number-resolving detectors (PNRDs). This…

This paper proposes a highly accurate algorithm to estimate the signal-to-noise ratio (SNR) for a linear system from a single realization of the received signal. We assume that the linear system has a Gaussian matrix with one sided left…

信息论 · 计算机科学 2017-10-10 Mohamed A. Suliman , Ayed M. Alrashdi , Tarig Ballal , Tareq Y. Al-Naffouri

This letter revisits the channel estimation problem for MIMO systems with one-bit analog-to-digital converters (ADCs) through a novel algorithm--Amplitude Retrieval (AR). Unlike the state-of-the-art methods such as those based on one-bit…

信号处理 · 电气工程与系统科学 2020-01-08 Cheng Qian , Xiao Fu , Nicholas D. Sidiropoulos

We consider a wireless sensor network, sampling a bandlimited field, described by a limited number of harmonics. Sensor nodes are irregularly deployed over the area of interest or subject to random motion; in addition sensors measurements…

其他计算机科学 · 计算机科学 2009-11-13 A. Nordio , C. -F. Chiasserini , E. Viterbo

This paper introduces an off-the-grid estimator for integrated sensing and communication (ISAC) systems, utilizing lifted atomic norm minimization (LANM). The key challenge in this scenario is that neither the transmit signals nor the…

信息论 · 计算机科学 2024-11-15 Iman Valiulahi , Christos Masouros , Athina P. Petropulu

We propose regularized approximate message passing (RAMP), a low-complexity algorithm for discrete signal detection in overloaded multiple-input multiple-output (MIMO) systems where the number of transmit antennas exceeds the number of…