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Identical Partitioning of Consecutive Integer Set

Identical Partitioning of Consecutive Integer Set

引用

sensor array and multichannel signal processing workshop

作者： Yimin D. Zhang Shunqiao Sun Department of Electrical and Computer Engineering Temple University Philadelphia PA USA Department of Electrical and Computer Engineering The University of Alabama Tuscaloosa AL USA

ISBN: (数字)9798350344813

ISBN: (纸本)9798350344820

In this paper, we develop a scheme to partition a one- or multi-dimensional consecutive integer number set into multiple identical, possibly rotated, subsets. The proposed technique first exploits one-dimensional nested subsets, and the results are extended to achieve two- and multi-subset partitioning as well as in two- and multi-dimensional spaces. The number of consecutive lags in each case is examined. The results are useful to various sensing and communication applications, and sparse step-frequency waveform design for range estimation in automotive radar is demonstrated as an example.

关键词： array signal processing Conferences Estimation Radar signal processing sensors Radar applications sensor arrays

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A Dual Mode FPGA Implementation of Real-time Target Detection for Hyperspectral Imagery 3

A Dual Mode FPGA Implementation of Real-time Target Detectio...

引用

3rd International workshop on Earth Observation and Remote Sensing Applications (EORSA)

作者： Yang, Bin Yang, Minhua Gao, Lianru Zhang, Bing Cent South Univ Sch Geosci & Infophys Changsha Hunan Peoples R China Chinese Acad Sci Inst Remote Sensing & Digital Earth Beijing Peoples R China

ISBN: (纸本)9781479941841

Target detection is an important topic for extracting information from hyperspectral imagery. Due to the high computational complexity, developing fast target detection algorithm has received considerable interest, specifically to take advantage of field-programmable gate array (FPGA) architecture in hardware implementation. In this paper, a novel streaming background statistics (SBS) method is used for optimizing the constrained energy minimization (CEM) and Reed-Xiaoli (RX) algorithms which are the benchmarks of signal-based target detection and anomaly detection, respectively. As a purpose, these two classic algorithms can be easily calculated in a streaming update way. Finally, we present a dual mode FPGA implementation in which, two different algorithms are arranged for different detection requirements within a real-time processing.

关键词： hyperspectral imagery target detection real-time processing streaming gackground statistics field programmable gate arrays

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Subspace Tracking with Dynamical Models on the Grassmannian

Subspace Tracking with Dynamical Models on the Grassmannian

引用

sensor array and multichannel signal processing workshop

作者： Alex Saad-Falcon Brighton Ancelin Justin Romberg Department of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA USA

ISBN: (数字)9798350344813

ISBN: (纸本)9798350344820

Tracking signals in dynamic environments presents difficulties in both analysis and implementation. In this work, we expand on a class of subspace tracking algorithms which utilize the Grassmann manifold - the set of linear subspaces of a high-dimensional vector space. We design regularized least squares algorithms based on common manifold operations and intuitive dynamical models. We demonstrate the efficacy of the approach for a narrowband beamforming scenario, where the dynamics of multiple signals of interest are captured by motion on the Grassmannian.

关键词： Manifolds array signal processing Tracking Heuristic algorithms Computational modeling signal processing algorithms Vectors

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Analysis of a Fixed Point Iteration Algorithm for TOA Localization

Analysis of a Fixed Point Iteration Algorithm for TOA Locali...

引用

sensor array and multichannel signal processing workshop

作者： Yanbin Zou Yangpeng Xiao Huaping Liu Department of EE Shantou University Shantou Guangdong China School of EECS Oregon State University Corvallis OR U.S.A.

ISBN: (数字)9798350344813

ISBN: (纸本)9798350344820

A recent work on a fixed point iteration (FPI) al-gorithm for time-of-arrival localization has shown great promise for lower implementation complexity than existing algorithms without compromising on performance. However, this work did not provide a theoretical analysis. In the current paper, we pro-vide a comprehensive theoretical analysis of the convergence and performance of the FPI algorithm. These analyses reveal several useful conclusions about the characteristics of the estimator.

关键词： Location awareness Maximum likelihood estimation array signal processing Conferences Noise signal processing algorithms Complexity theory

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Cooperative amplify-and-forward beamforming with multi-antenna source and relays

Cooperative amplify-and-forward beamforming with multi-anten...

引用

ieee International workshop on Computational Advances in Multi-sensor Adaptive processing (CAMSAP)

作者： Yang-wen Liang Robert Schober University of British Columbia Canada

ISBN: (纸本)9781424451791;9781424451807

In this paper, we propose a beamforming (BF) scheme for cooperative networks with multiple antennas at the source node and the amplify-and-forward (AF) relay nodes. Adopting the instantaneous signal-to-noise ratio (SNR) as optimality criterion, we obtain closed-form expressions for the maximum SNR and the optimal AF-BF matrices at the relays for a given BF vector at the source. Furthermore, we propose a numerical algorithm to find a locally optimal BF vector at the source. Simulation results for Rayleigh fading show that AF-BF with multi-antenna relays can achieve significant performance gains compared to direct transmission without relaying.

关键词： array signal processing Relays Transmitting antennas signal to noise ratio Performance gain Wireless communication Fading Downlink Power system relaying Conferences

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MIMO radars & their conventional equivalents 3

MIMO radars & their conventional equivalents

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3rd ieee Radar Methods and Systems workshop, RMSW 2016

作者： Brookner, Eli Raytheon Company 282 Marrett Rd. LexingtonMA02421 United States

ISBN: (纸本)9781509010493

This paper is given in tutorial form using a simple explanation starting from basics of phased arrays and how they work. Physical insight into MIMO is then given. No heavy math used. It has been shown in the literature that MIMO thin/full array radars can provide orders of magnitude better resolution and accuracy than conventional radars. The thin/full array consisted of two collocated parallel linear arrays of N elements each. One is a thin array and the other a full array having spacings respectively of Nλ/2 and λ/2 with the thin one used for transmit and the full for receive. We show how to use the same thin/full arrays in conventional radars to do as well and also without grating lobes (GLs). Also covered are full/thin array equivalents. Detailed are the monostatic MIMO full array radar and its Skolnik ubiquitous equivalent and a machine gunning equivalent. The performance of these systems against jammers is summarized. A simple physical explanation is given of why the Cramer-Rao bound provides a 2 better angle accuracy for the MIMO monostatic full array than the conventional ubiquitous array equivalent and why this result does not apply for the machine gunning equivalent. It has been also shown in the literature that a MIMO thin/full array airborne GMTI radar can provide a better minimum detectable velocity (MDV) than a conventional one. We show how the same MIMO thin/full array can be used in a conventional GMTI radar system to provide the same advantages as the MIMO system re coherence dwell time and aperture size and thus should provide the same MDV. The operation, waveforms, detection sensitivities, use of maximum likelihood estimation (MLE) for angle estimation and detection, and resolutions of these systems are detailed. We show that the signal processing load for the MIMO radar system can typically be much larger than for its conventional equivalents. There is also usually a more difficult waveform design problem with MIMO. Finally, we present potential

关键词： MIMO radar

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Outage Analysis of Spectrum Sharing Multi-Antenna Multi-Relay Networks

Outage Analysis of Spectrum Sharing Multi-Antenna Multi-Rela...

引用

ieee International Conference on Communications (ICC) / Wireless Communications Symposium / 3rd workshop on Optical Wireless Communications (OWC)

作者： Hu, Zhenzhen Cheng, Julian Zhang, Zhongpei Univ Elect Sci & Technol China Chengdu Sichuan Peoples R China Univ British Columbia Kelowna BC Canada

ISBN: (纸本)9781467389990

Prior results on performance analysis for cognitive relay networks mainly involve perfect channel state information (CSI), which is not readily available. Thus, the effects of outdated CSI on the performance of a multi-antenna multi-relay cognitive radio system are investigated in this work. To exploit the benefits of multiple antennas, collaborative zero-forcing beamforming at the secondary source is proposed to enhance the system performance under the outdated CSI. At the destination, the maximum ratio combining (MRC) diversity scheme is adopted. The Nth best relay selection strategy is applied before the secondary data transmission process. Closed-form expressions for the exact and asymptotic outage probabilities are derived for the secondary user over the Rayleigh fading in the first hop and Nakagami-m fading in the second hop with and without feedback delay. These analytical results can reveal the system diversity order and coding gain. Monte Carlo simulations are carried out to verify the correctness of our analysis. These new analytical results can reveal insights into the characteristics of the proposed system over the outdated fading channels, and can provide useful design criteria for relay-assisted spectrum sharing networks.

关键词： Relays signal to noise ratio array signal processing Interference Cognitive radio Antennas Collaboration

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Pareto-optimal beamforming for the MISO interference channel with partial CSI

Pareto-optimal beamforming for the MISO interference channel...

引用

ieee International workshop on Computational Advances in Multi-sensor Adaptive processing (CAMSAP)

作者： Eleftherios Karipidis Andreas Gründinger Johannes Lindblom Erik G. Larsson Communication Systems Division Department of Electrical Engineering (ISY) Linköping University Linkoping Sweden Associate Institute of Signal Processing Department of Electrical Engineering & Information Technology Technical University Munich Munich Germany

ISBN: (纸本)9781424451791;9781424451807

We consider the problem of finding Pareto-optimal (PO) operating points for the multiple-input single-output (MISO) interference channel when the transmitters have statistical (covariance) channel knowledge. We devise a computationally efficient algorithm, based on semidefinite relaxation, to compute the PO rates and the enabling beamforming vectors. We illustrate the effectiveness of our algorithm by a numerical example.

关键词： array signal processing Interference channels Transmitters signal processing algorithms Receiving antennas Transmitting antennas Conferences Adaptive signal processing Information technology Interference constraints

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Cramer-Rao bounds for estimating range, velocity, and direction with a sensor array

Cramer-Rao bounds for estimating range, velocity, and direct...

引用

sensor array and multichannel signal processing workshop

作者： A. Dogandzic A. Nehorai EEC$ Department (M/C 154) University of Illinois Chicago Chicago IL USA

We derive Cramer-Rao bound (CRB) expressions for the range (time delay), velocity (Doppler shift), and direction of a point target using an active radar or sonar array. The CRB expressions are derived for an arbitrary signal waveform and a noise model that allows both spatial and temporal correlation. We discuss the relationship between the CRB and ambiguity function for this model. Then, we simplify the CRB for the cases of temporally or spatially uncorrelated noise. We compute the CRB for a 3-dimensional array with isotropic sensors in spatially uncorrelated noise and show that it is a function of the array geometry only through the "moments of inertia" of the array. The volume of the confidence region for the target's location is proposed as a measure of accuracy. For this measure, we show that the highest (and lowest) target location accuracy is achieved if the target lies along one of the principal axes of inertia of the array.

关键词： sensor arrays Doppler shift Delay effects Doppler radar Radar antennas Delay estimation Sonar Volume measurement Antenna arrays Baseband

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A Decentralised Asynchronous Optimisation Algorithm with an Application to Phase Retrieval

A Decentralised Asynchronous Optimisation Algorithm with an ...

引用

sensor array and multichannel signal processing workshop

作者： Behnam Mafakheri Jonathan H. Manton Iman Shames Electrical and Electronic Engineering University of Melbourne Melbrourne Australia School of Engineering Australian National University Canberra Australia

ISBN: (数字)9798350344813

ISBN: (纸本)9798350344820

This paper tackles the challenge of decentralised, nonconvex optimisation in situations where agents work asynchronously. Our main contribution is a new algorithm, partially asynchronous ADMM, designed to solve decentralised optimisation problems like phase retrieval. Importantly, it does not require a central coordinator and can work with arbitrary connected network setups. We also prove that our algorithm is equivalent to the randomised block coordinate Douglas-Rachford Splitting method. To illustrate the algorithm's effectiveness, we provide numerical results for the distributed phase retrieval problem, demonstrating its correctness and performance.

关键词： array signal processing Conferences signal processing algorithms Performance analysis Optimization sensor arrays

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