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检索条件"任意字段=2008 IEEE Sensor Array and Multichannel Signal Processing Workshop"

共 1267 条记录，以下是181-190 订阅

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Hybrid Beamforming for Multi-Carrier Dual-Function Radar-Communication System

Hybrid Beamforming for Multi-Carrier Dual-Function Radar-Com...

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作者： Cheng, Ziyang He, Zishu Liao, Bin School of Information and Communication Engineering University of Electronic Science and Technology of China Chengdu611731 China Guangdong Key Laboratory of Intelligent Information Processing College of Electronics and Information Engineering Shenzhen University Shenzhen518060 China

This paper investigates a hybrid beamforming design for dual-function radar-communication (DFRC) systems. Comparing with fully digital beamforming, much less radio frequency (RF) chains are needed and hence, both hardware cost and energy consumption can be reduced. The hybrid transmit/receive beamformers are designed by maximizing the sum-rate under constraints of power as well as similarity between the designed beamformer and the reference one that has good beampattern property. Particularly, both single-user and multi-user scenarios are addressed by introducing different hybrid beamforming designs. For the single-user case, we devise an alternating optimization method under the alternating direction method of multipliers (ADMM) framework. For the multi-user scenario, we introduce a two-stage procedure based on weighted mean-square error minimization (WMMSE). Numerical simulations are provided to demonstrate the effectiveness of the proposed schemes. © 2015 ieee.

关键词： Mean square error

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Proceedings of the ieee sensor array and multichannel signal processing workshop

Proceedings of the IEEE Sensor Array and Multichannel Signal...

引用

2016 ieee sensor array and multichannel signal processing workshop, SAM 2016

ISBN: (纸本)9781509021031

The proceedings contain 156 papers. The topics discussed include: low-complexity DOA estimation based on Hermitian EVDS;switched-randomized robust PCA for foreground and background separation in video surveillance;an optimal polarization tracking algorithm for lithium-niobate-based polarization controllers;sliding-window homotopy adaptive filter for estimation of sparse UWA channels;low-rank robust adaptive beamforming techniques using joint iterative optimization;cooperative navigation and coverage identification with random gossip and sensor fusion;stream selection methods for non-regenerative mimo relay networks;comparing antenna selection and hybrid precoding for millimeter wave wireless communications;joint MSINR and relay selection algorithms for distributed beamforming;performance analysis of a persymmetric adaptive matched filter;channel estimation and uplink achievable rates in one-bit massive MIMO systems;distributed fractional programming in matched multiple access channels;and new Crameár-Rao bound expressions for coprime and other sparse arrays.

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High-Resolution Target Sensing Using Multi-Frequency Sparse array

High-Resolution Target Sensing Using Multi-Frequency Sparse ...

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sensor array and multichannel signal processing workshop

作者： Ammar Ahmed Dennis Silage Yimin D. Zhang Department of Electrical and Computer Engineering Temple University Philadelphia PA USA

ISBN: (数字)9781728119465

ISBN: (纸本)9781728119472

In this paper, we discuss high-resolution target sensing through the exploitation of multi-frequency sparse array processing. By using simple design examples of a three-element sensor array coupled with the sensing signals consisting of three well-designed frequencies, we provide insights to achieve a high number of consecutive lags, unique lags, and array aperture. Such multi-frequency sensor arrays with reduced number of sensors can be attractive in many applications to achieve effective sensing with a low cost.

关键词： Correlation array signal processing Conferences Estimation Apertures sensors Spatial resolution

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Computation of Weight Function of 2qth Order Virtual array to Analyse the Estimation Performance

Computation of Weight Function of 2qth Order Virtual Array t...

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sensor array and multichannel signal processing workshop

作者： Payal Gupta Monika Agrawal Centre of Applied Research in Electronics Indian Institute of Technology New Delhi India

ISBN: (数字)9781728119465

ISBN: (纸本)9781728119472

Increasing the number of sources to be processed from a given array of sensors is an important problem in sensor array signal processing and of interest to many researchers. This problem has also been tackled with the virtual array based approach where the covariance and cumulant lags provide a virtual sensor. Here, an important parameter which affects the parameter estimation accuracy and latency is weight function. The weight function is defined as the frequency of occurrence of each virtual sensor in the virtual array. We provide the close-form expression of virtual array corresponding to linear array. We have also analytically evaluated the weight function of virtual array and have also studied the effect of the weight function on parameter estimation. Simulation results show the parameter estimation accuracy is significantly improve with high weight function.

关键词： Direction-of-arrival estimation array signal processing Simulation Conferences Estimation Parallel processing sensor systems

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GPU-accelerated parallel optimization for sparse regularization

GPU-accelerated parallel optimization for sparse regularizat...

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sensor array and multichannel signal processing workshop

作者： Xingran Wang Tianyi Liu Minh Trinh-Hoang Marius Pesavento Communication Systems Group Technische Universitat Darmstadt Darmstadt Germany

ISBN: (数字)9781728119465

ISBN: (纸本)9781728119472

We prove the concept that the block successive convex approximation algorithm can be configured in a flexible manner to adjust for implementations on modern parallel hardware architecture. A shuffle order update scheme and an all-close termination criterion are considered for efficient performance and convergence comparisons. Four different implementations are studied and compared. Simulation results on hardware show the condition of using shuffle order and selection of block numbers and implementations.

关键词： array signal processing Simulation Conferences signal processing algorithms Approximation algorithms Hardware Optimization

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Chance Constrained Beamforming for Joint Radar-Communication Systems

Chance Constrained Beamforming for Joint Radar-Communication...

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sensor array and multichannel signal processing workshop

作者： Ammar Ahmed Dennis Silage Yimin D. Zhang Department of Electrical and Computer Engineering Temple University Philadelphia PA USA

ISBN: (数字)9781728119465

ISBN: (纸本)9781728119472

We present an intelligent sensor array-based joint radarcommunication 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： Constraint optimization Uncertainty array signal processing Simulation Communication channels Programming Probabilistic logic

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One-side Extended Nested array for Degree of Freedom Enhancement

One-side Extended Nested Array for Degree of Freedom Enhance...

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sensor array and multichannel signal processing workshop

作者： Shiwei Ren Wentao Dong Xiangnan Li Su Yan Haixia Wu Weijiang Wang Department of Signal and Electronics Beijing Institute of Technology Beijing China

ISBN: (数字)9781728119465

ISBN: (纸本)9781728119472

In this paper, an extended nested array strategy is proposed for degree of freedom (DOF) enhancement. Based on the augmented nested array (ANA), with the inter-element spacings in the side subarray increased, the strategy provides the possibility to acquire higher number of DOF than the existing nested-like arrays, such as the nested array, ANA, improved nested array and the maximum inter-element spacing constraint array. The one-side extended nested array (OS-ENA) is specifically proposed based on the ENA strategy, which can successfully avoid the holes brought by the sparse distribution of sensors and increase the DOF. The analytical expressions of sensor locations and DOF are derived. Simulations of the direction-of-arrival estimation verify the superiorities of the proposed OS-ENA with the spacial smoothing MUSIC algorithm used.

关键词： Direction-of-arrival estimation Smoothing methods array signal processing Simulation Conferences signal processing algorithms sensors

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Parametric Bootstrapping of array Data with A Generative Adversarial Network

Parametric Bootstrapping of Array Data with A Generative Adv...

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sensor array and multichannel signal processing workshop

作者： Peter Gerstoft Herbert Groll Christoph F. Mecklenbräuker University of California San Diego La Jolla CA Inst. of Telecommunications Wien Austria

ISBN: (数字)9781728119465

ISBN: (纸本)9781728119472

Since the number of independent array data snapshots is limited by the availability of real-world data, we propose a parametric bootstrap for resampling. The proposed parametric bootstrap is based on a generative adversarial network (GAN) following the generative approach to machine learning. For the GAN model we chose the Wasserstein GAN with penalized norm of gradient of the critic with respect to its input (wGAN gp). The approach is demonstrated with synthetic and real-world ocean acoustic array data.

关键词： array signal processing Oceans Machine learning Games Generative adversarial networks Acoustic arrays Generators

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DOA Estimation Exploiting Interpolated Multi-Frequency Sparse array

DOA Estimation Exploiting Interpolated Multi-Frequency Spars...

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sensor array and multichannel signal processing workshop

作者： Shuimei Zhang Ammar Ahmed 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)9781728119465

ISBN: (纸本)9781728119472

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： Interpolation Direction-of-arrival estimation array signal processing Simulation Estimation Parallel processing sensors

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Transmit Beampattern Design for Dual-Function Radar-Communication System with an Interleaved array

Transmit Beampattern Design for Dual-Function Radar-Communic...

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sensor array and multichannel signal processing workshop

作者： Yufeng Chen Guisheng Liao Zhiwei Yang Shengqi Zhu Yongjun Liu Mengchao Jiang National Laboratory of Radar Signal Processing Xidian University Xi’an China

ISBN: (数字)9781728119465

ISBN: (纸本)9781728119472

In this paper, a beampattern design method is proposed for the multi-input-multi-output (MIMO) dual-function radar-communication (DFRC) system with an interleaved array. To make full use of the whole aperture, first, the transmit array is partitioned into two interleaved subarrays, one is for radar and the other is for downlink communications. Then, both the radar waveform and communication beamformers are optimized by combining the null-space projection (NSP) method and cyclic approach (CA) to perform the coexistence of MIMO radar and downlink communications. Besides, the communication beampattern can be utilized to improve the detection performance. Finally, several numerical results are given to show the effectiveness of the proposed method.

关键词： array signal processing Design methodology Transmitting antennas signal processing algorithms Radar Apertures Downlink

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