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检索条件"任意字段=4th IEEE Sensor Array and Multichannel Signal Processing Workshop"

共 931 条记录，以下是71-80 订阅

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QoE-aware UAV flight path design for mobile video streaming in HetNet 10

QoE-aware UAV flight path design for mobile video streaming ...

引用

10th ieee sensor array and multichannel signal processing workshop (SAM)

作者： Colonnese, Stefania Carlesimo, Andrea Brigato, Lorenzo Cuomo, Francesca Sapienza Univ Rome Rome Italy

ISBN: (纸本)9781538647523

In this paper, we address the problem of devising a Quality of Experience (QoE) aware flight plan for UAV mounted Base Station within heterogeneous networks. Specifically, we propose a QoE aware flight planning algorithm leveraging the well established Q-learning approach and introducing a reward related to relevant QoE metrics. Numerical simulation results show the effectiveness of the QoE-aware learning algorithm to devise a flight path such that the UAVs mounted Base Station actually improves the QoE of the heterogeneous network users.

关键词： Quality of experience Streaming media signal processing algorithms Delays Bandwidth Path planning Unmanned aerial vehicles"

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A Game-theoretic Approach for Energy-Efficient Detection in Radar sensor Networks

A Game-Theoretic Approach for Energy-Efficient Detection in ...

引用

ieee 7th sensor array and multichannel signal processing workshop (SAM)

作者： Bacci, Giacomo Sanguinetti, Luca Greco, Maria S. Luise, Marco Univ Pisa Dipartimento Ingn Informaz I-56122 Pisa Italy

ISBN: (纸本)9781467310710

In this work, we propose a distributed power control algorithm able to capture the tradeoff between detection capabilities and power consumption for a radar sensor network. this is achieved by modeling the radar sensors as rational agents engaging in a noncooperative game in which the detection threshold and the transmit power are properly designed according to the Nash equilibrium solution. An iterative algorithm based on a best-response dynamics is proposed to achieve the equilibrium point and its performance is compared to that achieved by a uniform power allocation.

关键词： Energy efficiency

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DOA ESTIMATION EXPLOITING INTERPOLATED MULTI-FREQUENCY SPARSE array 11

DOA ESTIMATION EXPLOITING INTERPOLATED MULTI-FREQUENCY SPARS...

引用

ieee 11th sensor array and multichannel signal processing workshop (SAM)

作者： Zhang, Shuimei Ahmed, Ammar Zhang, Yimin D. Sun, Shunqiao Temple Univ Dept Elect & Comp Engn Philadelphia PA 19122 USA Univ Alabama Dept Elect & Comp Engn Tuscaloosa AL USA

ISBN: (纸本)9781728119465

We consider gridless direction-of-arrival (DOA) estimation of much more targets than the number of physical sensors through the exploitation of multi-frequency sparse array design and processing which increase the degrees of freedom as more frequency components are used. A modified sensor interpolation technique is developed to accurately estimate the signal covariance matrix using very few snapshots, thereby eliminating the requirement of a large number of snapshots as in conventional different coarray-based DOA estimation. Simulation results demonstrate high-resolution gridless DOA estimation capability of more targets than the number of physical sensors.

关键词： Sparse array multi-frequency sensing array interpolation direction-of-arrival estimation

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CHANCE CONSTRAINED BEAMFORMING FOR JOINT RADAR-COMMUNICATION SYSTEMS 11

CHANCE CONSTRAINED BEAMFORMING FOR JOINT RADAR-COMMUNICATION...

引用

ieee 11th sensor array and multichannel signal processing workshop (SAM)

作者： Ahmed, Ammar Silage, Dennis Zhang, Yimin D. Temple Univ Dept Elect & Comp Engn Philadelphia PA 19122 USA

ISBN: (纸本)9781728119465

We present an intelligent sensor array-based joint radar-communication system which exploits chance constrained programming to develop a robust beamforming design. Probabilistic chance constraints are introduced for the communication operation where the communication objectives are achieved with a desired success rate in the presence of communication channel uncertainties. the chance constraint optimization is then relaxed to form a deterministic and convex problem by employing the statistical profile of the communication channels. Simulation results illustrate the performance of the proposed strategy.

关键词： Intelligent sensor arrays joint radar-communication system spectrum sharing robust beamforming chance constrained programming

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Interference Mitigation in GNSS Receivers by array signal processing: A Software Radio Approach

Interference Mitigation in GNSS Receivers by Array Signal Pr...

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8th ieee sensor array and multichannel signal processing workshop (SAM)

作者： Arribas, Javier Closas, Pau Fernandez-Prades, Carles CTTC Castelldefels 08860 Spain

ISBN: (纸本)9781479914814

the fact that most of high-accuracy positioning and distributed timing services, including safety-critical operations, rely on Global Navigation Satellite Systems (GNSS) has raised the concern of possible denial-of-service situations. Complementary to time-and frequency-domain mitigation techniques, it is well known that antenna-array based receivers can benefit from spatial domain processing and effectively mitigate unintentional and intentional Radio Frequency Interferences (RFIs). In this work, we propose a software-based GNSS receiver architecture that implements a real-time, array-based signal acquisition algorithm based on the Generalized Likelihood Ratio Test, combined with a null-steering spatial filter for signal tracking, showing its RFI rejection capabilities.

关键词： disturbance suppression likelihood ratio test Global Navigation Satellite System Receivers Software radio Spatial filters array signal processing precise registration

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Unambiguous AOA Estimation Using SODA Interferometry for Electronic Surveillance

Unambiguous AOA Estimation Using SODA Interferometry for Ele...

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ieee 7th sensor array and multichannel signal processing workshop (SAM)

作者： Ly, Peter Q. C. Elton, Stephen D. Gray, Douglas A. Li, Joy Def Sci & Technol Org Elect Warfare & Radar Div Edinburgh SA 5111 Australia Univ Adelaide Sch Elect & Elect Engn Adelaide SA 5006 Australia

ISBN: (纸本)9781467310710

this paper presents two fast and computationally efficient interferometric algorithms that allow high accuracy, unambiguous angle-of-arrival (AOA) estimates to be obtained using physically large wideband antennas that are suitable for electronic surveillance. the performance of the algorithms are compared against conventional interferometric techniques using simulations and are also verified experimentally.

关键词： angle of arrival interferometry second order difference array ambiguity resolution

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Transmitted Beampattern Synthesis with Waveform Diverse arrays Based on Arctangent Function 10

Transmitted Beampattern Synthesis with Waveform Diverse Arra...

引用

10th ieee sensor array and multichannel signal processing workshop (SAM)

作者： Wang, Zhonghan Song, Yaoliang Mu, Tong Nanjing Univ Sci & Technol Sch Elect & Opt Engn Nanjing Jiangsu Peoples R China

ISBN: (纸本)9781538647523

In this paper, we apply a nonlinear frequency modulation scheme based on arctangent function to waveform diverse array system to design a transmitted beampattern to focus the signal power at a specific position. Distinct from most of the existing methodologies, the proposed method overcomes the problem that the focusing performance of the signal power will decrease when considering the propagation process of the transmitted signal. As a result, the transmitted signal power can be focused at a desired position and be lasting for a period of time. Numerical simulations validate the theoretical analysis of the proposed methodology.

关键词： transmitted beampattern waveform diverse array beampattern synthesis signal power focusing

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Sparse array Beamformer Design via ADMM 12

Sparse Array Beamformer Design via ADMM

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ieee 12th sensor array and multichannel signal processing workshop (SAM)

作者： Huang, Huiping So, Hing Cheung Zoubir, Abdelhak M. Tech Univ Darmstadt Darmstadt Germany City Univ Hong Kong Hong Kong Peoples R China

ISBN: (纸本)9781665406338

In this paper, we devise a sparse array design algorithm for adaptive beamforming. Our strategy is based on finding a sparse beamformer weight to maximize the output signal-tointerference-plus-noise ratio (SINR). the proposed method uses the alternating direction method of multipliers (ADMM), and admits closed-form solutions at each ADMM iteration. Numerical results exhibit excellent performance of the proposed method, which is comparable to that of the exhaustive search approach.

关键词： Adaptive beamforming ADMM sparse array design output SINR

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Direction Finding and array Calibration Based on Sparse Reconstruction in Partly Calibrated arrays

Direction Finding and Array Calibration Based on Sparse Reco...

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8th ieee sensor array and multichannel signal processing workshop (SAM)

作者： Steffens, Christian Parvazi, Pouyan Pesavento, Marius Tech Univ Darmstadt Commun Syst Grp Darmstadt Germany

ISBN: (纸本)9781479914814

A novel convex optimization problem formulation for source localization using partly calibrated arrays composed of subarrays with unknown displacements is introduced. the proposed formulation is based on sparse reconstruction using a mixed trace- and l(1)-norm minimization and exploits joint sparsity and special structure in the signal model. the new technique is applicable to subarrays of arbitrary topologies and allows the joint estimation of the directions of arrival (DoAs) and the array calibration. As shown by simulations, our new DoA estimation technique outperforms the state of the art method RARE, especially in low number of snapshot and low signal-to-noise ratio regime.

关键词： Partly Calibrated array Direction Finding Sparse Reconstruction Trace-Norm Minimization

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Multidimensional ESPRIT: A Coupled Canonical Polyadic Decomposition Approach

Multidimensional ESPRIT: A Coupled Canonical Polyadic Decomp...

引用

8th ieee sensor array and multichannel signal processing workshop (SAM)

作者： Sorensen, Mikael De lathauwer, Lieven Katholieke Univ Leuven EE Dept ESAT STADIUS Ctr Dynam Syst Signal Proc & Data Analyt B-3001 Leuven Heverlee Belgium iMinds Med IT Dept B-3001 Leuven Heverlee Belgium KU Leuven Kulak Grp Sci Engn & Technol B-8500 Kortrijk Belgium

ISBN: (纸本)9781479914814

the ESPRIT method is a classical method for one-dimensional harmonic retrieval. During the past two decades it has become apparent that several applications in signal processing correspond to the less studied Multidimensional Harmonic Retrieval (MHR) problem. In order to accommodate this demand, we propose an extension of ESPRIT to MHR based on the coupled canonical polyadic decomposition. this leads to a dedicated uniqueness condition and an algebraic framework for MHR.

关键词： Canonical decomposition MULTIDIMENSIONAL signal processing harmonics retrieval Esapent coupling

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