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	1. A minimum bandwidth occupation mechanism for collision avoidance system
	Ma Yanyan,Zhang Xin
	Electrics, Communication and Autocontrol Technology 15 January 2021
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	Abstract:Collision avoidance as an essential use case for vehicular networks can effectively enhance the safety of vehicles. This paper addresses how to avoid collision between vehicles and vulnerable road users(VRU), i.e., pedestrians, cyclists or motorists equipped with smartphones. Due to the limited computation resource and processing capability of smartphones, mobile edge computing (MEC) is introduced. MEC is utilized to reduce the transmission delay and relieve the network congestion, by pushing computation resource and processing capability to network edge. In particular, this paper focuses on a collision avoidance scenario including an edge collision detector, multiple vehicles and VRUs. In addition, we propose a minimum bandwidth occupation algorithm for collision warning. By calculating the consumed bandwidth of two different candidate alerting methods, we are able to decide the most efficient way, which occupates minimum bandwidth, to avoid the colliison.
	TO cite this article:Ma Yanyan,Zhang Xin. A minimum bandwidth occupation mechanism for collision avoidance system[OL].[15 January 2021] http://en.paper.edu.cn/en_releasepaper/content/4753372


	2. Deep Reinforcement Learning Based Content Caching in Wireless Networks
	GAO Huihui,ZHAO Zhongyuan
	Electrics, Communication and Autocontrol Technology 22 December 2020
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	Abstract:Content caching is considered as an integral part of content management in wireless networks. In this paper, we studied the Deep Reinforcement Learning (DRL) based content caching scheme in wireless networks. First, an optimization problem that aims to minimize the total cost of content delivery is formulated. Second, a DRL-based algorithm is proposed to implement real time management of content caching and delivery, which can approach the optimal solution without iterations during each decision epoch. Finally, the simulation results are provided to evaluate the performance of our proposed scheme, which show that it can achieve lower cost than the existing content caching schemes.
	TO cite this article:GAO Huihui,ZHAO Zhongyuan. Deep Reinforcement Learning Based Content Caching in Wireless Networks[OL].[22 December 2020] http://en.paper.edu.cn/en_releasepaper/content/4753285

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	3. MADDPG based Assembly Approach of Cooperative Robotic Arms
	LI Yanjiang,WANG Chensheng,YANG Guang,JING Xueliang,LI Yangguang,QIAN Zhixuan
	Electrics, Communication and Autocontrol Technology 15 June 2020
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	Abstract:Compared with the single robitic arm, a two-arm cooperative robot has a more complex problem of motion interference. In cooperative assembly problems, traditional control methods need much calculation to establish a mathematical model for motion planning, which can not meet the needs of modern industry. Multi-Agent Reinforcement Learning(MARL) provides a new way to solve the assembly problem. This paper proposes a assembly method of collaborative robotic arm based on MADDPG. A multi-agent system simulation environment is founded based on MuJoCo physical engine and then assembly tasks in the environment are solved with MADDPG model. Finally, the approach is proved to be effective by experiment.
	TO cite this article:LI Yanjiang,WANG Chensheng,YANG Guang, et al. MADDPG based Assembly Approach of Cooperative Robotic Arms[OL].[15 June 2020] http://en.paper.edu.cn/en_releasepaper/content/4752399


	4. Dynamic and proactive caching in User-centric UDN
	Jiang Juzheng
	Electrics, Communication and Autocontrol Technology 21 May 2020
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	Abstract:Wireless content caching has been considered as an efficient way to reduce the traffic and energy consumption in 5G networks. As a promising technology of 5G, User-centric UDN(UUDN) break through the traditional cellular architecture, allowing users served by a following AP group(APG) as the user moving. However, caching in UUDN faces fundamental challenges due to the frequent APG refreshing, irregular user moving and APs cooperation inner each APG. In this paper, we propose a dynamic prefetch method to solve the above questions. First, we use a hybrid Markov model to predict the user\'s future position. Then, we propose an algorithm to choose the prefetch point according to both the time dimension and the spatial dimension. In the end, we put forward a specific formula to calculate the size of prefetch content according to different user moving station. In conclusion, we propose an integrate prefetching process in UUDN network solving the problem of when, where and what content to prefetch. Simulation results show that the method we proposed could get a significantly improve than the popular based method and the forward prefetch method.
	TO cite this article:Jiang Juzheng. Dynamic and proactive caching in User-centric UDN[OL].[21 May 2020] http://en.paper.edu.cn/en_releasepaper/content/4752130


	5. 2-D Pair-Matching Method for L-shaped Array Based on CS Theory
	YU Xiaoyou,JIANG Yalin
	Electrics, Communication and Autocontrol Technology 13 May 2020
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	Abstract:To address the problems of high computational complexity and angle mismatch in 2-D DOA estimation using CS theory in the intelligent vehicle radar communication integrated system, this paper proposes a new method based on compressed sensing. Combined with the particularity of L-shaped array structure, this method firstly uses SVD processing to obtain a low-dimensional data matrix; secondly, defines the spatial synthesis angle for secondary dimensionality reduction; then uses the OMP algorithm and mathematical geometry to inversely obtain sparse parameters; finally, the subspace projection is used to achieve angle matching, so as to obtain the correct 2-D DOA estimation result. The theoretical derivation and experimental simulations show that this algorithm greatly reduces the computational complexity and improves the probability of pairing success. It also has obvious advantages for different SNR, array element number and snapshot number.
	TO cite this article:YU Xiaoyou,JIANG Yalin. 2-D Pair-Matching Method for L-shaped Array Based on CS Theory[OL].[13 May 2020] http://en.paper.edu.cn/en_releasepaper/content/4752071


	6. Research on DOA Estimation Algorithm Based on Sparse Spatial Fusion
	YU Xiao-You,JIANG Ya-Lin
	Electrics, Communication and Autocontrol Technology 13 May 2020
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	Abstract:The note on the theory of using the compressed sensing theory to estimate the angle of arrival of the array signal in the intelligent vehicle system based on radar-communication is the spatial sparse partitioning and the optimization of the sparse reconstruction algorithm. Different partitioning methods will result in different array flow patterns, and the construction of array flow patterns is the basis of algorithm estimation. At present, the establishment of the sparse model is simply based on the equal angle or the equal sinusoidal division method. However, in the normal and end-fire directions, the orthogonality of the two is different, and the estimation results are also different. To this end, this paper designs a spatial sparse partitioning model combining the equal sinusoidal and the equal angle division. The simulation shows that this model has certain advantages compared with the traditional division method. In addition, in order to optimize the performance of the SAMP algorithm in integrated systems, this paper proposes an improved matching tracking algorithm. Based on the SAMP algorithm, this algorithm sets strict comparison of residual values as termination conditions, and automatically adjusts the number of atoms in the candidate set through an adaptive process to achieve accurate signal reconstruction. The theoretical derivation and experimental simulations show that this algorithm has obvious benifits in terms of operation speed and reconstruction accuracy while maintaining the advantages of this original algorithm.
	TO cite this article:YU Xiao-You,JIANG Ya-Lin. Research on DOA Estimation Algorithm Based on Sparse Spatial Fusion[OL].[13 May 2020] http://en.paper.edu.cn/en_releasepaper/content/4751929


	7. The Outage Behavior of Decode-and-Forward Relaying in Diffusion-Based Molecular Communication
	Cui Yanxu,Song Zhengxun,Lang Baihe,Guan Tianfu,Lin Jiaqian
	Electrics, Communication and Autocontrol Technology 08 April 2020
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	Abstract:In this paper, the outage behavior of a decode-and-forward (DF) relaying network is studied in a two-hop diffusion-based molecular communication (MC) system. The MC system can be characterized by outage probability and outage events. Based on this event and probability, the robustness of the transmissions to fading is measured. Specifically, according to Shannon\'s capacity theorem and Fick\'s law, the outage probability of fading channels is investigated. The distribution characteristics of the channel gain is considered based on the proposed relaying system. The analysis of this article can be useful for the performance optimization of MC system.
	TO cite this article:Cui Yanxu,Song Zhengxun,Lang Baihe, et al. The Outage Behavior of Decode-and-Forward Relaying in Diffusion-Based Molecular Communication[OL].[ 8 April 2020] http://en.paper.edu.cn/en_releasepaper/content/4751511


	8. More accurate estimation of the linewidth of energy level dispersion in GaAs based Semiconductor Heterostructures
	KONG Xinyu,REN Xiaomin,LIU Hao,WANG Qi,LIU Kai,HUANG Yongqing
	Electrics, Communication and Autocontrol Technology 03 April 2020
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	Abstract:As a new advancement of the theory of fractional dimensionality of electron states architecture in semiconductor heterostructure physics, more accurate estimation of the linewidth of energy level dispersion in GaAs based semiconductor heterostructures at a temperature of 300K has been made by adopting a modified energy level dispersion function featuring an asymmetric lineshape and the relevant dimensional similarity functions modified mainly by introducing a novel concept of quantization baseline of density of states. It is determined as about 0.00221eV, which is in the same order of magnitude with the previous result, but about 10% larger than that. This work may magnify the impact of the fractional dimensionality theory on the development of semiconductor quantum electronics and optoelectronics and even that of fundamental physics.
	TO cite this article:KONG Xinyu,REN Xiaomin,LIU Hao, et al. More accurate estimation of the linewidth of energy level dispersion in GaAs based Semiconductor Heterostructures[OL].[ 3 April 2020] http://en.paper.edu.cn/en_releasepaper/content/4751465


	9. END-TO-END MUSIC DENOISING APPROACHES BASED ON HIGH-RESOLUTION REPRESENTATIONS
	Lin Chunyu,Liu Shuchang,Guo Li
	Electrics, Communication and Autocontrol Technology 25 March 2020
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	Abstract:With the rapid development of the information technology, digital music is becoming an essential carrier of music communication. Researches of speech enhancement are penetrating deeply and have got a good performance recently, while it is relatively less in music denoising. In the applications of music information retrieval(MIR), such as automatic music transcription and music alignment, various noises may influence the performance of retrieval algorithms. In this paper, end-to-end approaches based on high-resolution representations are presented without manual feature extraction. The U-Net model cascades neural networks with different resolutions while the HRNet model fuses high-to-low resolutions to extract high-resolution features. To solve the lack of specialized music denoising database, we mix the music database MusicNet and the noise database NoiseX-92 with five different signal-to-noise ratios. Through the analysis of source to distortion ratio, the HRNet model outperforms the U-Net model. The results reveal that the resolution fusion methods of HRNet is more suitable for high-resolution feature extraction to reduce noises.
	TO cite this article:Lin Chunyu,Liu Shuchang,Guo Li. END-TO-END MUSIC DENOISING APPROACHES BASED ON HIGH-RESOLUTION REPRESENTATIONS[OL].[25 March 2020] http://en.paper.edu.cn/en_releasepaper/content/4751331


	10. Investigation of a 32-lead body surface potential acquisition system: application to locate the equilibrium-point
	Fang Wensheng,Zhu Songsheng,Xu Jingyi,Xiang Wentao,Liu Bin,Li Jianqing
	Electrics, Communication and Autocontrol Technology 23 March 2020
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	Abstract:The traditional 12-lead electrocardiography (ECG) monitor system can record limited body surface potential (BSP) information at some particular area, where the cardiac state can only be roughly evaluated. In order to collect more heart information, in this study, a 32-lead BSP acquisition system is designed. The Wilson central terminal (WCT) is set as the reference electrode to obtain the BSPs at different points. To verify the proposed system, three sets of BSPs about healthy adult male are collected. By comparing the QRS complex of single cardiac cycle, an equilibrium point of BSP signal is defined (i.e. the amplitudes of R and S waves are clearly flipped) through this new system. Such equilibrium point can be a potential position index in clinical diagnosis.
	TO cite this article:Fang Wensheng,Zhu Songsheng,Xu Jingyi, et al. Investigation of a 32-lead body surface potential acquisition system: application to locate the equilibrium-point[OL].[23 March 2020] http://en.paper.edu.cn/en_releasepaper/content/4751325

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