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	1. Infrared light transport properties of nanostructure vanadium dioxide thin films across metal-insulator
	LIANG Jiran,LIU Xing,HU Ming,LI Na,WU Maijun
	Electrics, Communication and Autocontrol Technology 04 December 2013
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	Abstract:A nano-structured Vanadium dioxide thin film has been fabricated through reactive magnetron sputtering followed thermal annealing. X-ray diffraction and scanning electron microscope were used to analysis the crystalline structure and morphology of annealed thin film, respectively. The infrared light transport properties of nano-structured vanadium dioxide thin film were characterized by transmittance determined by Fourier transform infrared spectrometry during phase transition. The results show that the onset temperature of transition increases with wavelength. The maximum transmittance shifts to longer wavelength as the phase changed from insulating phase to metallic phase. The transmittance at shorter wavelength exhibits an increasing at the beginning of metal-insulator transition. The infrared light transport properties are related to the interaction of infrared light and vanadium dioxide nano-grain during metal-insulator transition.
	TO cite this article:LIANG Jiran,LIU Xing,HU Ming, et al. Infrared light transport properties of nanostructure vanadium dioxide thin films across metal-insulator[OL].[ 4 December 2013] http://en.paper.edu.cn/en_releasepaper/content/4572629


	2. Photonic Microwave Downconverter Based on an Optoelectronic Oscillator
	TANG Zhenzhou,ZHANG Fangzheng,PAN Shilong
	Electrics, Communication and Autocontrol Technology 21 October 2013
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	Abstract:A novel and compact photonic microwave downconverter is proposed and experimentally demonstrated based on an optoelectronic oscillator (OEO) using a single dual-drive Mach-Zehnder modulator (DMZM). The DMZM is used to simultaneously convert the input RF signal into an optical signal, form an OEO for RF carrier extraction, and downconvert the optical RF signal to the baseband. In the experiment, a 2-Gb/s NRZ coded 10.66-GHz RF signal is successfully downconverted to the baseband. In addition, a microwave receiver for wireless high-definition (HD) video transmission is built and verified based on the proposed downconverter. The experiment results confirm that the proposed downconverter has simple configuration, good downconversion performance and very stable operation.
	TO cite this article:TANG Zhenzhou,ZHANG Fangzheng,PAN Shilong. Photonic Microwave Downconverter Based on an Optoelectronic Oscillator[OL].[21 October 2013] http://en.paper.edu.cn/en_releasepaper/content/4565213

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	3. Robust Distributed Beamforming For Time Asynchronous Cooperative Communications Systems
	Yin Shi-yuan,Wang Hui-ming,Yin Qin-ye,Xia Xiang-gen
	Electrics, Communication and Autocontrol Technology 11 October 2013
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	Abstract:A robust distributed beamforming approach for time asynchronous cooperative communications systems is developed. In this method, the effect of time-asychronization is considered. The minimum receiving SINR on the destination is maximized subject to the constraints that individual relay transmitted power is limited. This distributed beamforming problem is shown to be a quasi-convex problem and can be solved using semi-definite programming along with a bisection search method. Simulation results demonstrate that the proposed method is robust to the time-asychronization and its performance is better than both the MRC and the non-robust method.
	TO cite this article:Yin Shi-yuan,Wang Hui-ming,Yin Qin-ye, et al. Robust Distributed Beamforming For Time Asynchronous Cooperative Communications Systems[OL].[11 October 2013] http://en.paper.edu.cn/en_releasepaper/content/4563656


	4. Enhancing the short-circuit current and efficiency of organic solar cells using Al-doped zinc oxide nanoparticles
	Zhang Yongzhi,Li Fushan,Guo Tailiang
	Electrics, Communication and Autocontrol Technology 09 September 2013
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	Abstract:In this paper, Al-doped zinc oxide (AZO) nanoparticles (NPs) were formed on indium tin oxide (ITO) electrode by thermal annealing AZO thin film prepared using sputtering method. Polymer solar cells using ITO, ITO/AZO thin film, and ITO/AZO NPs as anodes were prepared, and it was shown that the short-circuit current and power conversion efficiency of the solar cells could be significantly improved by depositing AZO NPs on ITO electrodes. The mechanism for improving the performance of the bulk-heterojunction polymer solar cells by using ITO/AZO NPs anode was systematically investigated. Our study opens up avenues for enhancing efficiency of polymer solar cells by structuring the electrodes with AZO NPs.
	TO cite this article:Zhang Yongzhi,Li Fushan,Guo Tailiang. Enhancing the short-circuit current and efficiency of organic solar cells using Al-doped zinc oxide nanoparticles[OL].[ 9 September 2013] http://en.paper.edu.cn/en_releasepaper/content/4558043


	5. Unsaturated throughput analysis of physical-layer network coding based on IEEE 802.11 distributed coordination function
	LIN Shijun,FU Liqun
	Electrics, Communication and Autocontrol Technology 05 September 2013
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	Abstract:In this paper, we investigate the throughputperformance of physical-layer network coding (PNC) under the IEEE802.11 distributed coordination function (DCF). We consider thewireless network that two client groups communicate with each otheracross one relay node, and focus on the unsaturated network case.The difficulty in modeling the relay systems under the IEEE 802.11DCF is that the minimum contention window sizes of the client nodesand the relay node may be different, which makes the traditionalthroughput analysis methods for the non-relay wireless networksinapplicable. Fortunately, we find that the relay system can bedecomposed into four parts and respectively modeled. Analyticalresults show that the throughput gain of PNC scheme is heavilyaffected by the probability that a transmitted network-coding (NC)packet contains the information of two packets. The implication isthat the throughput benefit of PNC is more significant forbidirectional isochronous traffic with rate requirements. We furtherderive an approximate closed-form solution of the optimaltransmission probability of client nodes that maximizes the PNCnetwork throughput. We validate our analytical model throughextensive simulations and discuss the relationship between the PNCnetwork throughput and other system parameters, such as the minimumcontention window sizes of both the client nodes and the relaynode.
	TO cite this article:LIN Shijun,FU Liqun. Unsaturated throughput analysis of physical-layer network coding based on IEEE 802.11 distributed coordination function[J].


	6. A Multisensor Fusion Architecture for Two Phase Flow Process Parameters Measurement
	TAN Chao,DONG Feng
	Electrics, Communication and Autocontrol Technology 12 August 2013
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	Abstract:Measuring the process parameters of two-phase flow has remained a widely discussed topic within the field of two-phase flow and measuring techniques, since to achieve this goal, a thorough understanding of flow mechanics and measuring techniques is necessary. However, the currently existing flow meters still could not meet the requirement from both the industrial and academic research, because most of the problems encountered in multiphase flow measurements arise from an increasing number of the characteristic flow parameters as compared with those in single-phase flows. This paper introduces a multi-sensor architecture of measuring process parameters of two-phase flow in a horizontal pipeline. Multi-sensor fusion techniques combine data and related information from spatially and temporally distributed sensors to achieve more complete, specific and reliable inferences than that could be achieved by using a single, independent sensor. The integration or fusion of data from each individual sensor eliminates possible redundancy and contradictions and consequently improves accuracy and reduces uncertainty of the measurement. The proposed architecture consists of a cone meter, a dual-plane Electrical Resistance Tomography (ERT) system, a set of parallel conductance ring sensors and pressure and temperature gauges. The function structure of sensor fusion is presented with data fusion algorithm. A case study on gas-water two phase flow is then presented with an improved results by using this architecture.
	TO cite this article:TAN Chao,DONG Feng. A Multisensor Fusion Architecture for Two Phase Flow Process Parameters Measurement[OL].[12 August 2013] http://en.paper.edu.cn/en_releasepaper/content/4555116


	7. A Wideband Frequency Selective Surfaces based on Hybrid Boundary Cavity
	WEI Xingchang,DAI Gaole,Jing Wei
	Electrics, Communication and Autocontrol Technology 16 July 2013
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	Abstract:In this paper, a novel frequency selective surface (FSS) based on hybrid boundary cavity is proposed, which shows a high frequency selectivity and a smaller cell size. The fundamental cell of the proposed frequency selective surface is a hybrid boundary cavity which consists of four common metallic vias serving as the perfect electric boundary, as well as etched slots on top and bottom surfaces serving as the perfect magnetic boundary. In order to achieve a wider bandwidth and at the same time guarantee the flatness of the passband, we further improve the fundamental cell. Two structures of the proposed FSS were fabricated for the validation, and the measurement results exhibit good agreement with the simulation results.
	TO cite this article:WEI Xingchang,DAI Gaole,Jing Wei. A Wideband Frequency Selective Surfaces based on Hybrid Boundary Cavity[OL].[16 July 2013] http://en.paper.edu.cn/en_releasepaper/content/4551683


	8. A High Resolution X/Ku Band Frequency Synthesizer
	Guo Fei,Xu Jinping
	Electrics, Communication and Autocontrol Technology 21 February 2013
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	Abstract:This paper presents a high resolution X/Ku band frequency synthesizer based on a direct digital synthesizer (DDS) driven phase locked loop (PLL). The DDS, adopted as the reference of the PLL, has a frequency step of 1Hz and a typical phase noise of -140dBc/Hz at the offset of 10KHz. Its fine frequency step enables the synthesizer to have a high resolution at X/Ku band, while the phase locked loop combined with a mixer at half frequency of output signal realizes the performance of low phase noise. A prototype of the X/Ku band frequency synthesizer is developed. Measured results shows that it has an output frequency range of 11.1GHz to 12.9 GHz, a frequency resolution as fine as 10Hz and a typical phase noise of -100dBc/Hz at the offset of 10KHz.
	TO cite this article:Guo Fei,Xu Jinping. A High Resolution X/Ku Band Frequency Synthesizer[OL].[21 February 2013] http://en.paper.edu.cn/en_releasepaper/content/4520384


	9. Performance Improvement of Oxide Thin-Film Transistors by a Two-Step-Annealing Method
	Li Min,Lan Linfeng,Xu Miao,Xu hua,Luo Dongxiang,Xiao Peng,Yao Rihui,Peng Junbiao
	Electrics, Communication and Autocontrol Technology 04 February 2013
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	Abstract:In this paper, thin-film transistor (TFT) with indium zinc oxide (IZO) channel layer was fabricated using a two-step-annealing method. The device showed better uniformity and better stability under positive bias stress, negative bias illumination stress, and temperature stress, compared to those with only one annealing step. The falling rate of this device was as high as 0.593 eV/V, showing that trap states in the channel were greatly reduced by the two-step-annealing process.
	TO cite this article:Li Min,Lan Linfeng,Xu Miao, et al. Performance Improvement of Oxide Thin-Film Transistors by a Two-Step-Annealing Method[OL].[ 4 February 2013] http://en.paper.edu.cn/en_releasepaper/content/4519284


	10. Experimental Investigation on the Impact of Polarization Anisotropy on Channel Correlation Matrix
	YIN Xue-Feng, HE Yong-Yu, LING Cen, TIAN Li, ZHONG Zhi-Meng
	Electrics, Communication and Autocontrol Technology 25 January 2013
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	Abstract:In this contribution, theoretical studies and measurement campaigns are performed for investigating the anisotropic behavior of propagation channels with respect to (w.r.t.) the polarizations of transmitter (Tx) and receiver (Rx) antennas. Under the assumption that the channel impulse response is isotropic w.r.t. the Tx-Rx polarizations, an analytical expression is derived for the polarized-channel correlation matrix, which is further applied to illustrate that the rank of the matrix is tightly upper-bounded by $4$. In addition, channel measurements in typical indoor scenarios with $12$ Tx- and $2$ Rx-polarization orientations are conducted to collect channel impulse responses which are used to compute the eigenvalue spectra of the polarized-channel correlation matrices. The comparison between the theoretical deduction and the empirical results demonstrates that the propagation channels exhibit properties different from the deduction under the channel isotropy assumption, implying that the channel polarization anisotropy exists in the considered indoor environments.
	TO cite this article:YIN Xue-Feng, HE Yong-Yu, LING Cen, et al. Experimental Investigation on the Impact of Polarization Anisotropy on Channel Correlation Matrix[OL].[25 January 2013] http://en.paper.edu.cn/en_releasepaper/content/4510824

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