Based on the practical engineering application, it is realized the design of digital demodulation module of the receiver in the ground interrogator of a certain type secondary radar. The interrogator on the ground adopts a single-pulse direction measurement receiver with amplitude comprised system, separating the RF interrogation signal from transmitter into Σ interrogation signal and Δ control signal. In this paper, the design of the module is on Σ signal and Δ signal from receiver for a series of digital demodulation operation, testing and translating the coded values of the power level of the response signals.
{"title":"The Digital Demodulation Module of Receiver Based on Ground Interrogator","authors":"Rong Yingjiao, Lu Wenfang","doi":"10.1145/3291842.3291854","DOIUrl":"https://doi.org/10.1145/3291842.3291854","url":null,"abstract":"Based on the practical engineering application, it is realized the design of digital demodulation module of the receiver in the ground interrogator of a certain type secondary radar. The interrogator on the ground adopts a single-pulse direction measurement receiver with amplitude comprised system, separating the RF interrogation signal from transmitter into Σ interrogation signal and Δ control signal. In this paper, the design of the module is on Σ signal and Δ signal from receiver for a series of digital demodulation operation, testing and translating the coded values of the power level of the response signals.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124046382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tiantian Zhang, Yaojun Qiao, Zhenshan Zhang, Ji Zhou, Yueming Lu, Fei Su
In this paper, we propose a performance-enhancement asymmetrically clipped optical fast orthogonal frequency-division multiplexing (ACO-FOFDM) with discrete cosine transform-spread (DCT-S) technique for peak-to-average power ratio (PAPR) reduction and high-frequency attenuation mitigation in OWC system. At a probability of 10−3, the PAPR of the proposed scheme is approximately 3.8 dB and 2.8 dB lower than that of conventional ACO-FOFDM with binary phase-shift keying and 4-ary pulse-amplitude modulation, respectively. The numerical simulation results validate that, benefiting from the resistance of nonlinear clipping and high-frequency distortion in the OWC system, the proposed ACO-FOFDM with DCT-S technique can achieve a significant superiority of performance compared to its counterpart, which shows the great potential for OWC.
{"title":"Performance-enhancement ACO-FOFDM Scheme with DCT-spread Technique for OWC","authors":"Tiantian Zhang, Yaojun Qiao, Zhenshan Zhang, Ji Zhou, Yueming Lu, Fei Su","doi":"10.1145/3291842.3291868","DOIUrl":"https://doi.org/10.1145/3291842.3291868","url":null,"abstract":"In this paper, we propose a performance-enhancement asymmetrically clipped optical fast orthogonal frequency-division multiplexing (ACO-FOFDM) with discrete cosine transform-spread (DCT-S) technique for peak-to-average power ratio (PAPR) reduction and high-frequency attenuation mitigation in OWC system. At a probability of 10−3, the PAPR of the proposed scheme is approximately 3.8 dB and 2.8 dB lower than that of conventional ACO-FOFDM with binary phase-shift keying and 4-ary pulse-amplitude modulation, respectively. The numerical simulation results validate that, benefiting from the resistance of nonlinear clipping and high-frequency distortion in the OWC system, the proposed ACO-FOFDM with DCT-S technique can achieve a significant superiority of performance compared to its counterpart, which shows the great potential for OWC.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131080017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In vehicular ad-hoc network (VANET), the standardized protocol currently is IEEE 802.11p. To reduce the end-to-end delays including store-and-catch-up (SAC) and channel access competition delays generated by IEEE 802.11p, in this paper device-to-device (D2D) communication over the cellular band is introduced, then a hybrid system combined D2D and IEEE 802.11p is proposed, finally a D2D spectrum allocation algorithm based on the hybrid system is present. Simulation results demonstrate the superiority of the proposed algorithm under different scenarios and parameter settings.
{"title":"A D2D-based Delay Optimization Method in VANET","authors":"Yinze Zhao, Lingyun Jiang","doi":"10.1145/3291842.3291890","DOIUrl":"https://doi.org/10.1145/3291842.3291890","url":null,"abstract":"In vehicular ad-hoc network (VANET), the standardized protocol currently is IEEE 802.11p. To reduce the end-to-end delays including store-and-catch-up (SAC) and channel access competition delays generated by IEEE 802.11p, in this paper device-to-device (D2D) communication over the cellular band is introduced, then a hybrid system combined D2D and IEEE 802.11p is proposed, finally a D2D spectrum allocation algorithm based on the hybrid system is present. Simulation results demonstrate the superiority of the proposed algorithm under different scenarios and parameter settings.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131136549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, we use the Crank-Nicolson (CN) difference scheme for the pulse transmission equation in fiber with the Riesz space fractional derivative to obtain the fractional nonlinear Schrodinger equations. We compare fractional Fourier transformation (FrFT) and fractional nonlinear Schrödinger equation (FNSE) for optical fiber communications with single pulse signal and multiple pulse signal. We find that the shape and peak value of NRZ-OOK single pulse signal processed by FrFT and FNSE are similar. And the numerical model of FNSE and FrFT used to calculate cumulative(CD) dispersion have a certain relationship.
{"title":"Numerical Model of Fractional Nonlinear Schrödinger Equation for the Light Propagation in Optical Fibers","authors":"Lingjun Yang, Aiying Yang, Peng Guo","doi":"10.1145/3291842.3291898","DOIUrl":"https://doi.org/10.1145/3291842.3291898","url":null,"abstract":"In this paper, we use the Crank-Nicolson (CN) difference scheme for the pulse transmission equation in fiber with the Riesz space fractional derivative to obtain the fractional nonlinear Schrodinger equations. We compare fractional Fourier transformation (FrFT) and fractional nonlinear Schrödinger equation (FNSE) for optical fiber communications with single pulse signal and multiple pulse signal. We find that the shape and peak value of NRZ-OOK single pulse signal processed by FrFT and FNSE are similar. And the numerical model of FNSE and FrFT used to calculate cumulative(CD) dispersion have a certain relationship.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130612842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As a popular cloud platform in open source, OpenStack combines computing, networking and storage components to provide a complete IaaS solution. Based on the IPv6 environment, this paper builds an OpenStack cloud platform on the server and creates a network load balancer based in Neutron. When the amount of user access increases, the load balancer can distribute traffic based on different load balancing algorithms, thereby improving the reliability of the cloud computing platform. This paper improves the traditional Weighted Round robin algorithm, and simulates a large number of users through JMeter to access the virtual server in the cloud platform. The results show that the network load balancing algorithms have obvious positive effects. We further measure the performance of different load balancing algorithms, and prove that the improved algorithm works better.
{"title":"Implementation and Research of Load Balancing Service on Cloud Computing Platform in IPv6 Network Environment","authors":"Zhidong Chen, Hailong Zhang, Jinyao Yan, Yuan Zhang","doi":"10.1145/3291842.3291871","DOIUrl":"https://doi.org/10.1145/3291842.3291871","url":null,"abstract":"As a popular cloud platform in open source, OpenStack combines computing, networking and storage components to provide a complete IaaS solution. Based on the IPv6 environment, this paper builds an OpenStack cloud platform on the server and creates a network load balancer based in Neutron. When the amount of user access increases, the load balancer can distribute traffic based on different load balancing algorithms, thereby improving the reliability of the cloud computing platform. This paper improves the traditional Weighted Round robin algorithm, and simulates a large number of users through JMeter to access the virtual server in the cloud platform. The results show that the network load balancing algorithms have obvious positive effects. We further measure the performance of different load balancing algorithms, and prove that the improved algorithm works better.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122196111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wireless Sensor Networks (WSN) are composed of multiple sensors with sensing, computing, and wireless communication capabilities. Small-world features are the very important discovery in networks. This paper proposes that combination of the Unmanned Aerial Vehicles (UAV) and WSN can save the energy consumption and improve network lifetime, because of the UAVs' flexibility and their excellent air channel quality. This paper shows the method that adding the UAV can transform the ordinary WSN into WSN with small world characteristics. Then according to the distribution of sensor nodes, an improved method is designed to optimize the flight path of the UAV. The results show that both the original path and the optimized path can make the WSN have the small-world characteristics, and the energy consumption of each node in the network decreases significant. The problem of uneven energy consumption in the network is also solved.
{"title":"Constructing Small Worlds in WSNs with UAV Trajectory Optimization","authors":"Jiewen Li, Li Guo, Chao Dong","doi":"10.1145/3291842.3291877","DOIUrl":"https://doi.org/10.1145/3291842.3291877","url":null,"abstract":"Wireless Sensor Networks (WSN) are composed of multiple sensors with sensing, computing, and wireless communication capabilities. Small-world features are the very important discovery in networks. This paper proposes that combination of the Unmanned Aerial Vehicles (UAV) and WSN can save the energy consumption and improve network lifetime, because of the UAVs' flexibility and their excellent air channel quality. This paper shows the method that adding the UAV can transform the ordinary WSN into WSN with small world characteristics. Then according to the distribution of sensor nodes, an improved method is designed to optimize the flight path of the UAV. The results show that both the original path and the optimized path can make the WSN have the small-world characteristics, and the energy consumption of each node in the network decreases significant. The problem of uneven energy consumption in the network is also solved.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127116953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Weijin Chen, Qingfeng Zhou, Xusheng Cheng, Min Peng, Lei Xu
With the improvement of living standard, people pay more and more attention to their health. The detection of sleep information has always been a hotspot in both the academic and industrial area. However, traditional sleep monitoring systems need to bundle devices on users, which in return negatively affects the user experience. Observing this, in order to eliminate the outside restriction of the wearing devices, we design a novel user sleep information monitoring system based on the Non-contact mattress. In particular, the novel system realizes the entire process from the design of hardware device to the software development which includes ceramic piezoelectric sensor data acquisition, WiFi module upload data, the host computer processing data functions and user information display. The experimental results show that the novel system can accurately obtain the physiological information of human body under sleep condition.
{"title":"A Novel User Sleep Information Monitoring System Based on Non-contact Mattress","authors":"Weijin Chen, Qingfeng Zhou, Xusheng Cheng, Min Peng, Lei Xu","doi":"10.1145/3291842.3291896","DOIUrl":"https://doi.org/10.1145/3291842.3291896","url":null,"abstract":"With the improvement of living standard, people pay more and more attention to their health. The detection of sleep information has always been a hotspot in both the academic and industrial area. However, traditional sleep monitoring systems need to bundle devices on users, which in return negatively affects the user experience. Observing this, in order to eliminate the outside restriction of the wearing devices, we design a novel user sleep information monitoring system based on the Non-contact mattress. In particular, the novel system realizes the entire process from the design of hardware device to the software development which includes ceramic piezoelectric sensor data acquisition, WiFi module upload data, the host computer processing data functions and user information display. The experimental results show that the novel system can accurately obtain the physiological information of human body under sleep condition.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127235935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To classify the loudspeaker abnormal sound more accurately, a feature extraction method is proposed in this paper, in which ensemble empirical mode decomposition (EEMD) and sample entropy are used for feature extraction. Support vector machine (SVM) is used to verify the effectiveness of the proposed method. After preprocessing of fundamental notching, the loudspeaker response is decomposed using EEMD. The intrinsic mode function (IMF) components are selected with correlation analysis and their sample entropy values are calculated to structure the feature vectors. Focused on the classification for loudspeaker abnormal sound with small sample condition, the experiment results have shown that SVM can classify accurately for loudspeaker abnormal sound, and more accurate than SVM using wavelet packets and sample entropy, moreover it achieved 95.33% classification accuracy.
{"title":"Feature Extraction Method for Loudspeaker Abnormal Sound Based on EEMD and Sample Entropy","authors":"Qiaochu Fang, Jinglei Zhou, Tinghu Yan","doi":"10.1145/3291842.3291894","DOIUrl":"https://doi.org/10.1145/3291842.3291894","url":null,"abstract":"To classify the loudspeaker abnormal sound more accurately, a feature extraction method is proposed in this paper, in which ensemble empirical mode decomposition (EEMD) and sample entropy are used for feature extraction. Support vector machine (SVM) is used to verify the effectiveness of the proposed method. After preprocessing of fundamental notching, the loudspeaker response is decomposed using EEMD. The intrinsic mode function (IMF) components are selected with correlation analysis and their sample entropy values are calculated to structure the feature vectors. Focused on the classification for loudspeaker abnormal sound with small sample condition, the experiment results have shown that SVM can classify accurately for loudspeaker abnormal sound, and more accurate than SVM using wavelet packets and sample entropy, moreover it achieved 95.33% classification accuracy.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128590948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wireless body area network can provide e-health medical, athletic and entertainment services which has used in business applications widely. However, there exists serious shadowing fading of wireless transmission with correlative features brought by human movements which has reduced service quality and user experiences obviously. In order to research the correlative characters of wireless links in WBAN under moving conditions, a new shadowing fading modeling method named GMBO(geometrical method of body occlusion) for human body area is proposed. GMBO has two orthogonal planes one of which is for arm waving and the other of which is for torso in the coordinate system. Then the occlusion distant of wireless links in human body can be calculated in GMBO way based on the loss field theory. Both the occlusion factor of shadowing fading and correlative coefficient among wireless links can be calculated and quantitatively analyzed. This work make crucial sense for the assessment of channel capacity, outage probability and relay selection of cooperative communication in WBAN.
无线体域网络可以提供电子健康、医疗、运动和娱乐等服务，在商业应用中得到了广泛的应用。然而，人体运动带来的相关特征无线传输存在严重的阴影衰落，明显降低了服务质量和用户体验。为了研究移动条件下WBAN无线链路的相关特性，提出了一种新的人体区域阴影衰落建模方法GMBO(geometric method of body occlusion)。GMBO在坐标系中有两个正交平面，一个用于手臂挥舞，另一个用于躯干。然后基于损失场理论，用GMBO方法计算人体无线链路的遮挡距离。可以计算和定量分析无线链路间阴影衰落的遮挡系数和相关系数。该工作对WBAN协同通信的信道容量评估、中断概率和中继选择具有重要意义。
{"title":"GMBO: A New Shadowing Fading Modeling Method with Correlative Features for Wireless Body Area Network under Human Moving Conditions","authors":"Yali Wang, Fan Wu, Rong Chen","doi":"10.1145/3291842.3291867","DOIUrl":"https://doi.org/10.1145/3291842.3291867","url":null,"abstract":"Wireless body area network can provide e-health medical, athletic and entertainment services which has used in business applications widely. However, there exists serious shadowing fading of wireless transmission with correlative features brought by human movements which has reduced service quality and user experiences obviously. In order to research the correlative characters of wireless links in WBAN under moving conditions, a new shadowing fading modeling method named GMBO(geometrical method of body occlusion) for human body area is proposed. GMBO has two orthogonal planes one of which is for arm waving and the other of which is for torso in the coordinate system. Then the occlusion distant of wireless links in human body can be calculated in GMBO way based on the loss field theory. Both the occlusion factor of shadowing fading and correlative coefficient among wireless links can be calculated and quantitatively analyzed. This work make crucial sense for the assessment of channel capacity, outage probability and relay selection of cooperative communication in WBAN.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125460363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aiming at the problems caused by nonlinear friction on precision optical servo platform at low speed, a novel sliding mode control (SMC) algorithm with adaptive gains is studied. Integral term is introduced to design sliding surface, and the Twisting control (TC) algorithm based on the idea of higher-order SMC is selected as the switching control law. Nonlinear gradient gains are proposed originally to solve the chattering problem of conventional TC. Then, Anti-windup method is particularly taken into consideration. Simulation results show that the proposed SMC algorithm can effectively compensate the adverse effect of friction on the system control performance at low speed, and in compare with PI algorithm and conventional TC, it achieves faster response, higher accuracy and stronger robustness.
{"title":"A Friction Compensation Algorithm Based on Sliding Mode Control","authors":"Zhao Rui, Yang Jianhong","doi":"10.1145/3291842.3291916","DOIUrl":"https://doi.org/10.1145/3291842.3291916","url":null,"abstract":"Aiming at the problems caused by nonlinear friction on precision optical servo platform at low speed, a novel sliding mode control (SMC) algorithm with adaptive gains is studied. Integral term is introduced to design sliding surface, and the Twisting control (TC) algorithm based on the idea of higher-order SMC is selected as the switching control law. Nonlinear gradient gains are proposed originally to solve the chattering problem of conventional TC. Then, Anti-windup method is particularly taken into consideration. Simulation results show that the proposed SMC algorithm can effectively compensate the adverse effect of friction on the system control performance at low speed, and in compare with PI algorithm and conventional TC, it achieves faster response, higher accuracy and stronger robustness.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"26 20","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120900688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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