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22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023

作者： Zhang, Wei Xiang, Jiajia Ling, Na Chen, Jiayang Zhang, Lijia Xia, Cao Xia, Yuanlin Wang, Zhuqing Sichuan University School Of Mechanical Engineering China Sichuan University Med + X Center For Manufacturing West China Hospital China

ISBN: (纸本)9784886864352

This paper proposes a single-input single-output (SISO) sensing scheme for multiple traces via high-order nonlinear mode localization in a coupled trio-cantilever array. SISO is realized by electrostatically driving the cantilever No. 1 and piezoelectrically outputting the response of cantilever No. 3. The mass sensitivities are also about 600% amplified by detecting the resonant frequency shifts of 4th - 6th modes instead of the basic modes (1st - 3rd modes). By decoupling the complex relationship between the multiple modes and the three traces, the maximum relative sensing errors for the three traces are reduced to e1 =11.05%, e2 =3.69%, e3 =10.29% respectively. This work not only widens the theoretical content of mode localization but also opens a new avenue for the quantitative detection of multiple traces. © 2023 IEEJ.

关键词： High-Order Mode Localization Low Sensing Error Multiple Traces Detection Nonlinear Mode Localization single-input single-output

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Outage probability analysis of multiple intelligent reflecting surface-assisted single-input single-output system with switched diversity

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INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS 2023年第14期36卷 e5550-e5550页

作者： Kumar Hindustani, Rahul Dixit, Dharmendra Sharma, Sanjeev IIT BHU Varanasi Elect Engn Varanasi India Rajkiya Engn Coll Elect Engn Sonbhadra India

In this paper, we have presented the outage probability analysis of multiple intelligent reflecting surface (IRS)-assisted single-input-single-output (SISO) system with switched diversity schemes. The switched diversity is simpler than the selection combining diversity technique, which can help in reducing the channel estimation overhead. There are two main types of switch diversity schemes, namely, switch and stay combining (SSC) and switch and examine combining (SEC). We consider a SISO wireless scenario in which a single transmitting antenna is sending its message to the receiving antenna with the aid of multiple IRS panels. This communication scenario will arise as a typical application of uplink scenario for future 6G wireless systems. The outage probability (OP) expressions for dual-IRS-panel-aided SSC system and multiple-IRS-panel-aided SEC system are analyzed, respectively, over Rician fading channels. We derive tight approximate OP expressions in closed form for a large number of IRS elements. Further, we derive a simple asymptotic OP for studying diversity order and coding gain. The OP performance with respect to each system parameter is thoroughly explored. Several numerical OP results are presented with corresponding simulated OP results to validate the accuracy of the presented analytical analysis.

关键词： coding gain diversity order intelligent reflecting surface outage probability Rician fading channel single-input single-output

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single-input single-output SAR-FFT for Fast Multistatic Millimeter Wave Imaging

Single-input Single-output SAR-FFT for Fast Multistatic Mill...

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IEEE International Symposium on Antennas and Propagation / North American Radio Science Meeting

作者： Nie, Xinyi Lin, Chuan Qing, Anyong Southwest Jiaotong Univ Sch Elect Engn Chengdu Peoples R China

ISBN: (纸本)9781728166704

In this paper, fast multistatic millimeter wave imaging (MMWI) is considered. A single-input single output (SISO) SAR-FFT algorithm using significantly less data is proposed. The novel algorithm implements SISO configuration to acquire echo data. Such a scheme leads to faster acquisition of less data and faster reconstruction at negligible cost of image quality. It has been validated by both synthetic and experimental imaging.

关键词： millimeter wave imaging single-input single-output SAR-FFT

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Experimental Evaluation of Turbo Receivers in single-input single-output Underwater Acoustic Channels

Experimental Evaluation of Turbo Receivers in Single-Input S...

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OCEANS Conference

作者： Duan, Weimin Zheng, Yahong Rosa

ISBN: (纸本)9781467397247

This paper presents some experimental results on both the channel estimation based minimum mean square error Turbo equalizer (CE MMSE-TEQ) and the direct-adaptation turbo equalizer (DA-TEQ) in single-input single-output (SISO) underwater acoustic (UWA) channels. For CE MMSE-TEQ, we compare the soft-decision feedback Turbo equalizer (SDFE), the bidirectional soft-decision feedback Turbo equalizer (Bi-SDFE) and the classic linear Minimum Mean Square Error (MMSE) Turbo equalizer in terms of bit error rate (BER) performance. For DA-TEQ, the recently proposed soft-decision direct-adaptation TEQ (Soft DA-TEQ) is evaluated with the same set of experimental data. Both QPSK and multilevel modulations (8PSK and 16QAM) have been tested with the symbol rate of 9.77 ksymbols/s. Experimental results show that the CE-TEQs are more robust in SISO underwater acoustic transmission under harsh channel conditions. Especially, with low pilot overheads, the recently proposed Bi-SDFE achieved low BER performance in all cases.

关键词： Turbo equalization single-input single-output Underwater Acoustic Communications

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Estimation of the Born data in inverse scattering of layered media

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INVERSE PROBLEMS 2024年第4期40卷 045005-045005页

作者： Jia, Zekui Li, Maokun Yang, Fan Xu, Shenheng Tsinghua Univ Beijing Natl Res Ctr Informat Sci & Technol BNRist Dept Elect Engn Beijing 100084 Peoples R China

The first term in the Born series, as we call the Born data, is linear with the scatterers. Here we present a scheme to map the total field data to the Born data in layered media using only the single-input single-output (SISO) setup. This nonlinear mapping is based on the reduced order model (ROM) approach, which constructs ROMs of the original wave operator. Normally, the construction of ROMs requires multi-input multi-output data. By introducing fictitious sensors, we estimate the Born data with SISO data in layered media. We give a simple way of using the time-domain Green's function to estimate the received data for other fictitious sensors without calculating the complicated Sommerfeld integral. The resulting Born data contains only the single-scattering component, which can be helpful for many imaging applications. A numerical example is given incorporating the direct imaging back-propagation method. It validates the linearity of the Born data by providing an artifact-free image without the optimization process.

关键词： Born data direct imaging inverse scattering layered media reduced order models single-input single-output

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Large-Capacity Photonics-Assisted Millimeter-Wave Wireless Communication Enabled by Dual-Polarized SISO Link and Advanced MIMO Equalizer

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JOURNAL OF LIGHTWAVE TECHNOLOGY 2024年第11期42卷 4048-4059页

作者： Cai, Yuancheng Luo, Wei Zhu, Min Liu, Xiang Zhang, Jiao Lei, Mingzheng Hua, Bingchang Li, Jiankang Xiang, Shitong Zhang, Junhao Zou, Yucong Ding, Junjie Chen, Xingyu Xiao, Jinbiao Yu, Jianjun Purple Mt Labs Nanjing 211111 Peoples R China Southeast Univ Natl Mobile Commun Res Lab Nanjing 210096 Peoples R China Mt Labs Nanjing 211111 Peoples R China Fudan Univ Key Lab Informat Sci Electromagnet Waves Shanghai 200433 Peoples R China

As the mobile communication evolves from sub-6 GHz to millimeter wave (MMW) frequency bands, the demand for high-speed wireless transmission rates exceeding hundreds of gigabits per second is becoming more and more prominent. It is one of the important cornerstones supporting numerous emerging bandwidth-consuming applications represented by the metaverse, digital twin and so on. So far, there is a huge room for improvement in wireless transmission rate, which is far inferior to the transmission capacity of fiber optic links. In this paper, we have proposed and experimentally demonstrated a large-capacity photonics-assisted MMW wireless communication system over 20-km fiber and 1.3-m wireless transmission at the W band. A dual-polarized single-input single-output (SISO) wireless link, instead of the commonly used 2 x 2 multiple-input multiple-output (MIMO) links, is used for the transparent transmission of optical polarization division multiplexing signal, which significantly simplifies the system complexity and enhances its robustness. In addition, the transmission performance is further improved by employing an advanced MIMO Volterra nonlinear equalizer. With the bit error ratio threshold of 2 x 10(-2), a record single-lane single-carrier wireless air interface rate (WAIR/ch/lambda) up to 504 Gb/s has been achieved for the first time. This solution we proposed provides opportunity for progress in the wireless air interface capacity close to the fiber-optic transmission capacity in the fiber-wireless integration transmission systems.

关键词： Large-capacity millimeter-wave communication multiple-input multiple-output nonlinear equalizer polarization division multiplexing single-input single-output W-band

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Estimating the Performance of Free Space Optical Communication in Rain Weather Conditions Using Various Models and Modified Duobinary Return to Zero Technique

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PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2022年第2期92卷 265-272页

作者： Magidi, S. Pondani, T. Harare Inst Technol Dept Elect Engn Box BE 277 Harare Zimbabwe

Free space optical communication (FSO) system has remarkably gained importance of late due to the various advantages associated with it. However, before deployment of FSO communication system, an understanding of the laser beam scintillation due to the atmospheric as well as other weather-induced losses need to be understood. This paper mainly focuses on simulative performance analysis of an FSO system under rain conditions using Optisystems commercial software and rainfall data. Thus, the available models which are the Suriza, Carbonnea, Japan and Samir models were used to determine the rainfall-induced attenuation for a given rainfall rate. Unlike in the previous articles that only used on off keying as the modulation scheme at the transmitter, we have used modified duobinary return to zero (MDRZ) modulation. Further, to improve the MDRZ-based FSO performance in rain conditions, we have used the single-input multiple-output (SIMO) concept with equal gain combining (EGC) at the receiver and again proved that the improvement in BER,Qfactor and received optical power suggests that MDRZ-based SIMO FSO communication results in a remarkable improvement.

关键词： FSO single-input single-output MDRZ Rainfall rate BER Qfactor

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Two-coordinate decomposed SISO models-based stability analysis of three-phase grid-connected inverter systems with asymmetric control

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INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS 2023年第1期153卷

作者： Lin, Xianfu Yu, Ruoxue Yu, Jingrong Wen, He Hunan Univ Coll Elect & Informat Engn Changsha Peoples R China Hunan Prov Key Lab Intelligent Elect Measurement Changsha Peoples R China Changsha Elect Power Tech Coll Dept Power Supply Serv Changsha Peoples R China Cent South Univ Sch Automat Hunan Prov Key Lab Power Elect Equipment & Grid Changsha Peoples R China

In this paper, the single-input single-output (SISO) theory-based stability analysis method for weak grids with a three-phase grid-connected inverter (GCI) incorporating asymmetrical control is proposed in dq-frame and sequence domain, respectively. Initially, the paper presents two-coordinate decomposed models for Multi-input Multi-output (MIMO) systems. These models reveal that the stability of the MIMO system can be evaluated by analyzing two open-loop gains in the dq-frame or a single gain in the sequence domain using Nyquist/Bode plots. Next, the proposed analytical method is compared with existing state-of-the-art techniques. Theoretical analysis demonstrates that the proposed method enables the separate design of asymmetrical control in the d-axis and q -axis using the dq-frame approach. Furthermore, it enables the identification of the system's instability axes, namely the d-axis and q-axis. On the other hand, the proposed method in the sequence domain offers a lower computational complexity while accurately identifying the system's frequency-coupled resonances. Finally, the effectiveness of the proposed method is validated through simulations and experiments, consolidating its prac-tical applicability.

关键词： single-input single-output Nyquist Bode plots Stability analysis Three-phase inverter

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Discrete Time Minimum Variance Control of Satellite System

Discrete Time Minimum Variance Control of Satellite System

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International Conference on Mathematical Modelling and Scientific Computing

作者： Dube, Deepali Y. Patel, Hiren G. Natl Inst Technol Surat 395007 GJ India Natl Inst Technol Dept Elect Engn Surat 395007 GJ India

ISBN: (纸本)9789811513381;9789811513374

This paper is concerned with the types of stochastic disturbances affecting the potential of the aerial system. The satellite system for continuous and discrete time domain is discussed. A phase lead compensator completes the orientation successfully. Astrom's single-input single-output (SISO) model is implemented with using the minimum variance control strategy. The separation principle then provides the optimal control law which curtails the cost function to a value as small as possible. The satellite system is positioned for one quarter revolution with the co-ordination of generalized minimum variance controller (GMVC) and standard generalized dual controller (GDC) based on certainty equivalence assumption. The revolutions in radians are tracked as output of the system for the input specified in degrees to the system. The controller proved useful in reducing the overshoot and atmospheric disturbances which allows a stable motion even for larger time delays.

关键词： Discrete time domain single-input single-output Optimal control law

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Complex vector analysis of a sensorless controlled three-phase motor drive and improvements by minimizing the observer order 9

Complex vector analysis of a sensorless controlled three-pha...

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IEEE 9th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)

作者： Tian, Bing Molinas, Marta Moen, Stig Zhang, Chen Norwegian Univ Sci & Technol Dept Engn Cybernet Trondheim Norway Aker Solut ASA Dept Engn Design Oslo Norway

ISBN: (纸本)9781728153018

Permanent Magnet Synchronous Motor (PMSM) drive is increasingly complex with the integration of more and more state observers. A senserless controlled PMSM (SC-PMSM) can be normally partitioned into three parts: 1) Field-oriented control (FOC), 2) Back-EMFs observer, 3) and filters as well as the phase-locked loop (PLL, which is a special type of filter). In the previous literature, methods have been presented to improve the SC-PMSM performance by increasing the observer order drastically. Conversely in this paper, the SC-PMSM is modeled as a single-input single-output system with a complex-valued representation, rather than the classical tedious two-by-two matrix notation. The interpretation of motor drives in complex-frequency domain is supposed to simplify the controller/observer design. The complex frequency model reveals that the PMSM drive with a position observer technique is equivalent to a high order non-linear system. Motivated by the concept of "simple is beautiful" in industries, this paper puts forward an alternative approach that uses the complex frequency theory to cancel the PLL and therefore downgrade the observer order, and its effectiveness is supported by the experimental results.

关键词： Sensorless Control Complex vector analysis PMSM Sliding mode control single-input single-output

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