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Modeling and Realization of Vehicle-to-Vehicle Wideband MIMO Channels 19

Modeling and Realization of Vehicle-to-Vehicle Wideband MIMO...

引用

19th International Symposium on Wireless Personal multimedia Communications (WPMC)

作者： Liang, Xiaolin Zhao, Xiongwen Wang, Wenxin Li, Jingchun Sun, Shaohui North China Elect Power Univ Beijing 102206 Peoples R China China Res Inst Radio Wave Propagat Natl Key Lab Electromagnet Environm Qingdao 266017 Peoples R China Tianjin Univ TJU Sch Precis Instrument & Optoelect Engn Tianjin 300072 Peoples R China State Radio Monitoring Ctr Beijing 100037 Peoples R China China Acad Telecommun Technol Datang Wireless Mobile Innovat Ctr Beijing 100191 Peoples R China

ISBN: (纸本)9784904020098

A geometry-based stochastic scattering model (GBSSM) combining of multi-rings and multi-ellipses model for wideband multi-input multi-output (MIMO) vehicle-to-vehicle (V2V) fading channels is developed in this paper with cross polarized antennas. The proposed model can be applied for the line-of-sight (LOS) and non-LOS (NLOS) scenarios. The channel implementation described in this paper is more concise compared with the available analytical solutions. Based on the proposed GBSSM and realized channel, the channel characteristics and parameters at 2 and 5 GHz with 100 MHz bandwidth are investigated in further.

关键词： Cross polarized antennas vehicle-to-vehicle multi-input multi-output multi-rings and multi-ellipses wideband channels

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Neural Network Model-Based Predictive Control for multivariable Nonlinear Systems

Neural Network Model-Based Predictive Control for Multivaria...

引用

IEEE International Conference on Control Applications Part of 2010 IEEE multi-Conference on Systems and Control

作者： Alamdari, Bahareh Vatankhah Fatehi, Alireza Khaki-Sedigh, Ali KN Toosi Univ Technol Dept Elect Engn Tehran Iran

ISBN: (纸本)9781424453634

A nonlinear model predictive control (NMPC) algorithm based on a neural network model is proposed for multivariable nonlinear systems. A multi-input multi-output model is developed using multilayer perceptron (MLP) neural network which is trained by Levenberg-Marquardt algorithm and amplitude modulated pseudo random binary (APRBS) signals with noise as data sets. Model predictive control also uses Levenberg-Marquardt algorithm for the control signal optimization. The control performance is improved by using a disturbance model that compensates both model mismatch and external disturbance. The learning rate of disturbance estimation network changes adaptively to treat the model mismatch differently from the external disturbance. Simulation results using the quadruple-tank are employed to show the effectiveness of the method.

关键词： Nonlinear predictive control multi-input multi-output MLP neural network Disturbance rejection Quadruple tank process

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Enhanced Performance of Spatial Modulation with Angular Diversity Receiver for Indoor Visible Light Communication

Enhanced Performance of Spatial Modulation with Angular Dive...

引用

IEEE/CIC International Conference on Communication in China (ICCC)

作者： Zhuang, Boyuan Li, Chao Xu, Zhengyuan Univ Sci & Technol China Chinese Acad Sci Key Lab Wireless Opt Commun Hefei 230022 Peoples R China Tsinghua Univ Shenzhen Grad Sch Shenzhen 518055 Peoples R China

ISBN: (纸本)9781509021437

multi-input-multi-output (MIMO) technique is adapted to achieve high speed transmission in visible light communication (VLC) system. In MIMO VLC system, spatial modulation (SM) is employed to avoid inter-channel interference (ICI). However, the performance of SM MIMO indoor VLC system is restricted by the high channel response correlation. In this paper, we propose an angular diversity receiver approach for SM MIMO VLC system. By varying the receivers' normal vectors, the correlation of the channel transfer matrix is effectively reduced, which leads to 7 similar to 8dB signal-to-noise ratio (SNR) gains at BER level of 10(-3) compared to the conventional SM in MIMO VLC system. Additionally, the horizontal rotation and vertical shift invariance verified by the simulation results makes the proposed scheme more practical and easier to be implemented.

关键词： Visible Light Communication multi-input multi-output Angular Diversity Receiver Spatial Modulation

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On the Inherent Physical-Layer Security of Receive Spatial Modulation Systems 25

On the Inherent Physical-Layer Security of Receive Spatial M...

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25th IEEE International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (IEEE CAMAD)

作者： Abushattal, Abdelrahman Althunibat, Saud Qaraqe, Marwa Arslan, Huseyin Istanbul Medipol Univ Dept Elect & Elect Engn Istanbul Turkey Al Hussein Bin Talal Univ Fac Engn Dept Commun Engn Maan Jordan Hamad Bin Khalifa Univ Qatar Fdn Coll Sci & Engn Doha Qatar

ISBN: (纸本)9781728163390

This paper investigates the physical-layer security attained by Receive Spatial Modulation (RSM) scheme against potential eavesdroppers. The impact of the involved parameters on the bit error rate (BER) at the legitimate receiver and the considered eavesdropper is shown and discussed. Moreover, a hybrid scheme is proposed in order to alleviate the impact of the channel estimation errors on the achievable BER at the legitimate receiver. The proposed scheme allows the transmitter to switch between RSM and the conventional SM based on the phase of the estimated channel coefficient. Simulation results reveal that the proposed scheme can achieve at least 3 dB SNR gain as compared to the RSM, while keeping the error rate at the eavesdropper within acceptable bound.

关键词： multi-input multi-output Spatial modulation Receive spatial modulation Physical-layer security

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DSP design of channel estimation in MIMO-OFDM system

DSP design of channel estimation in MIMO-OFDM system

引用

66th IEEE Vehicular Technology Conference

作者： Ting, Mu Xiao Yu, Zhou Ming Bing, Yang Feng, Tao Xiao Beijing Univ Posts & Telecommun Wireless Technol Innovat Inst Beijing 100088 Peoples R China

ISBN: (纸本)9781424402632

In this paper, the simplified DSP implementation of training sequence-based on Least Square (LS) channel estimation in MIMO-OFDM system was demonstrated. A proper design of the training sequence not only simplifies channel estimation, but also still obtains the best estimation performance. For the purpose of getting channel estimation algorithm to work in real time, some main approaches are carried out to speed up operation, saving memory and improving accuracy. Statistics on resource occupation and running time of such a scheme in TMSC6416 chip was given. While the implementation is applicable in B3G MlMO-OFDM system, which adopted 4 transmit antennas and 8 receive ones.

关键词： channel estimation multi-input multi-output orthogonal frequency division multiplexing optimum training sequence words

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Performance Enhancement of the Golden Code by Utilizing the ORIOL Antenna 8

Performance Enhancement of the Golden Code by Utilizing the ...

引用

8th International Symposium on Telecommunications (IST)

作者： AmiriKooshki, Vahid SadatHosseini, Mohammad Ali Lotfi-Rezaabad, Ali Talebi, Siamak Univ Sci & Technol Sch Elect Engn Tehran Iran Petr Univ Technol Sch Elect Engn Tehran Iran Sharif Univ Technol Sch Elect Engn Tehran Iran Shahid Bahonar Univ Sch Elect Engn Kerman Iran

ISBN: (纸本)9781509034352

In this paper, a novel method is exposed to improve the performance of the Golden code. In fact, we recommend using the octagonal reconfigurable isolated orthogonal element (ORIOL) antennas instead of a conventional microstrip patch antenna. In order to obtain a dramatic improvement, the ORIOL antenna should be employed in both the transmitter and the receiver sides. Accordingly, in this paper, we recommend spacetime- polarization diversity instead of space-time singly;therefore, it is obvious that by employing this technique, the system obtains more strength against destructive fading. The simulations for different rates have confirmed that utilizing the ORIOL antenna outperforms patch microstrip one, which is roughly about 2 to 3 dB according to the rates.

关键词： multi-input multi-output LTE space-time block codes Golden code metasurface ORIOL antenna

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Phase Index-Based Receive Spatial Modulation PHY Security Against Supervised Pattern Recognition

Phase Index-Based Receive Spatial Modulation PHY Security Ag...

引用

IEEE Wireless Communications and Networking Conference (WCNC)

作者： Abushattal, Abdelrahman Arslan, Huseyin Istanbul Medipol Univ Dept Elect & Elect Engn Istanbul Turkey Univ S Florida Dept Elect Engn Tampa FL USA

ISBN: (纸本)9781728195056

Receive Spatial Modulation (RSM) uses the index of the receive antenna to convey additional information bits, which reduces the receiver complexity and improves spectral efficiency. Additionally, it provides inherent physical layer security using the Zero-forcing (ZF) precoding technique. However, the channel becomes vulnerable to eavesdropper (Eve) if the channel impulse response is assumed to be time-invariant or stationary through coherent block intervals. In this paper, a physical layer secure scheme is proposed based on phase index RSM to combat eaves-droppers that use k-nearest neighbors (KNN) supervised pattern recognition. The average bit error rate (BER) performance shows the ability of the proposed scheme to provide a suitable level of security while degrading the average BER performance of Eve.

关键词： multi-input multi-output k-nearest neighbors (KNN) Zero-forcing precoding supervised pattern recognition receive spatial modulation physical-layer security supervised Pattern Recognition

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On the Study of Half-duplex Two-way Relaying based on Network Coding

引用

3rd International Conference on Machinery Electronics and Control Engineering (ICMECE 2013)

作者： Fan Jinhong Beijing Univ Posts & Telecommun Coll Informat & Commun Engn Beijing 100876 Peoples R China

ISBN: (纸本)9783037859032

A novel scheme based on detection is proposed for half-duplex two-way relay system in this paper. multi-input multi-output and network coding technique are applied in the relay. The proposed method employs detection in this system when the relay and two stations receive signal. Theoretical and simulative analyses of the protocol performance under the assumption of a binary symmetric relay channel model are carried out. The zero-forcing detection and maximum likelihood detection are respectively used. The simulation results show that the new scheme facilitates more reliable transmission and higher information transmission rate.

关键词： multi-input multi-output network Coding two-way relaying detection channel capacity

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MIMO Robust Servo Controller Design Based on Internal Model Principle Using Polynomial Differential Operator

MIMO Robust Servo Controller Design Based on Internal Model ...

引用

AETA International Conference

作者： Kim, Sang Bong Kim, Dae Hwan Pratama, Pandu Sandi Kim, Jin Wook Kim, Hak Kyeong Oh, Sea June Jung, Young Seok Pukyong Natl Univ Dept Mech Design Engn Busan 608739 South Korea Korea Maritime Univ Div Mechatron Engn Busan South Korea

ISBN: (纸本)9783319272474;9783319272450

This paper proposes a controller design method for the multi-input multi-output robust servo system based on the internal model principle using polynomial differential operator. To do this task, the followings are done. Firstly, the basic idea of internal model principle is described. Secondly, the extended system by operating the polynomial differential operator to a given system with disturbance under the given conditions of reference and disturbance expressed into polynomial differential equation form and an output error is introduced. Thirdly, the controllability checking of the extended systems is done. Fourthly, a state feedback law is obtained by solving the pole assignment problem with all the poles of the extended system. Fifthly, a full observer is designed to estimate unknown states. Sixthly, the proposed control method is applied to a four steering wheel vehicle. Simulation results show that the proposed method can successfully make the system with a step and ramp type of disturbance track three references such as step, ramp and parabola types.

关键词： Internal model principle multi-input multi-output Polynomial differential equation Robust servo controller

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Control Design of 3 DOF Helicopter System 11

Control Design of 3 DOF Helicopter System

引用

11th International Conference on Industrial and Information Systems (ICIIS)

作者： Dube, D. Y. Patel, H. G. Sardar Vallabhbhai Natl Inst Technol Elect Engn Dept Surat India

ISBN: (纸本)9781509038183

The helicopter system is highly complicated, nonlinear, under-actuated with multiple inputs and multiple outputs (MIMO). To balance this system there lies an urgent requirement of stabilizing the states to the equilibrium. This is done by analysis of the parametric uncertainties or disturbances occuring at the time of operation of the system. The model referred in this paper has three degrees-of-freedom (DOF) with four inputs. Two different co-ordinate frames in translational motion are discussed. For regulation of the attitude dynamics, a linear back-stepping control theory is adopted with a combination of adaptive laws. The adaptive back-stepping allows the virtual control to be added in the backward direction of the physical model and evaluates the changing weight along with other parametric uncertainties. Experimental results show that the proposed control theory can be applied to two different definitions of translational motion and is helpful in finding out the uncertain moments. The Lift and static margin are well maintained in the presence of unhealthy condition.

关键词： backstepping control mathematical model multi-input multi-output

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