In the intelligent electronic fence system, in order to reduce the blind area of pulse detection and adapt to different transmission distance, based on low-voltage pulse ranging method, direct digital frequency synthesis technology is used to synthesize and simulate the circuit and burn it to FPGA chip through Quartus II platform. The rectangular pulse signal is output by digital-analog converter circuit and low-pass filter circuit. The experimental results show that 16 kinds of frequency adjustable rectangular pulse signals are generated by this method, which can effectively reduce the blind area of measurement and enhance the adaptability.
{"title":"Design of Frequency Adjustable Pulse in Intelligent Electronic Fence System","authors":"Shuai Yang, Fan-liang Bu","doi":"10.1145/3291842.3291907","DOIUrl":"https://doi.org/10.1145/3291842.3291907","url":null,"abstract":"In the intelligent electronic fence system, in order to reduce the blind area of pulse detection and adapt to different transmission distance, based on low-voltage pulse ranging method, direct digital frequency synthesis technology is used to synthesize and simulate the circuit and burn it to FPGA chip through Quartus II platform. The rectangular pulse signal is output by digital-analog converter circuit and low-pass filter circuit. The experimental results show that 16 kinds of frequency adjustable rectangular pulse signals are generated by this method, which can effectively reduce the blind area of measurement and enhance the adaptability.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"111 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":"133815399","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}
Multiple-input-multiple-output (MIMO) Over-the-air (OTA) testing has attracted great interests for reproducing the realistic channel environment. Among different solutions of OTA, multi-probe anechoic chamber (MPAC) is widely used due to its controllability for channel environment reconstruction. In MPAC, each physical channel of the channel emulator needs to be connected to one polarization of the probe, so it is meaningful to use fewer pro. This paper proposes a particle swarm optimization (PSO) method to find out the positions of the probes and their corresponding probe probes while reproducing the target channel as accurately as possible. It is shown that compared with the traditional uniform probe distribution method, reducing the number of probes can still achieve accurate channel spatial reconstruction.
{"title":"MIMO OTA Probe Selection Based on Particle Swarm Optimization","authors":"Xiaoqing Liu, Chunjing Hu, Lijian Xin, Yong Li","doi":"10.1145/3291842.3291870","DOIUrl":"https://doi.org/10.1145/3291842.3291870","url":null,"abstract":"Multiple-input-multiple-output (MIMO) Over-the-air (OTA) testing has attracted great interests for reproducing the realistic channel environment. Among different solutions of OTA, multi-probe anechoic chamber (MPAC) is widely used due to its controllability for channel environment reconstruction. In MPAC, each physical channel of the channel emulator needs to be connected to one polarization of the probe, so it is meaningful to use fewer pro. This paper proposes a particle swarm optimization (PSO) method to find out the positions of the probes and their corresponding probe probes while reproducing the target channel as accurately as possible. It is shown that compared with the traditional uniform probe distribution method, reducing the number of probes can still achieve accurate channel spatial reconstruction.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"7 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":"133331460","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}
The IPv6 address auto-configuration for the nodes in the IoT has always been a core issue that cannot be ignored. In addition to the stateful address auto-configuration method based on the DHCPv6 server, there is also a stateless address auto-configuration method, SLAAC. These two methods have received widespread attention from the industry in the constraint environments for the IoT and the nodes. By analyzing typical IoT network architecture and protocol layered architecture, this paper constructs two IPv6 address automatic configuration methods and the combinations of the two methods. Using Contiki's cooja simulator, a simulation experiment of the automatic IPv6 address allocation method was performed. This paper counts, compares and analyzes the communication overhead and time delay of address assignment. According to the result, a solution is proposed for the address allocation of the Internet of Things node in different application scenarios.
{"title":"A Research on IPv6 Address Auto-Configuration for IoT","authors":"Yu-Rong Li, Geng-yu Wei","doi":"10.1145/3291842.3291901","DOIUrl":"https://doi.org/10.1145/3291842.3291901","url":null,"abstract":"The IPv6 address auto-configuration for the nodes in the IoT has always been a core issue that cannot be ignored. In addition to the stateful address auto-configuration method based on the DHCPv6 server, there is also a stateless address auto-configuration method, SLAAC. These two methods have received widespread attention from the industry in the constraint environments for the IoT and the nodes. By analyzing typical IoT network architecture and protocol layered architecture, this paper constructs two IPv6 address automatic configuration methods and the combinations of the two methods. Using Contiki's cooja simulator, a simulation experiment of the automatic IPv6 address allocation method was performed. This paper counts, compares and analyzes the communication overhead and time delay of address assignment. According to the result, a solution is proposed for the address allocation of the Internet of Things node in different application scenarios.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"39 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":"114825763","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}
Jing-wen Gong, Xiaojun Li, Qinggui Tan, D. Liang, Wei Jiang
To solve the limitation that the electrical filter can only process the signal with specific bandwidth in a specific frequency, a frequency tunable and bandwidth reconfigurable microwave photonic filter is proposed. Among them, the filter based on the stimulated Brillouin scattering effect has become one of the research hotspots due to its low threshold, simple implementation and inherent narrow bandwidth. The performance of the filter obtained by the three SBS gain spectrum expansion schemes is compared experimentally. It is proved that the scheme of using a 5-lines comb generated by the external modulator as the Brillouin pump, and controlling its amplitude spectrum shape by a binary phase shift keying vector signal with the code rate of 50 Mbps obtains the best filter performance. A filter with a 3dB bandwidth of 196MHz, a 20dB form factor of 1.31, an in-band ripple of less than 3.5dB, and an out-of-band rejection ratio of more than 20dB is obtained experimentally. Its excellent performance can meet the requirements of hundreds of megahertz filters required by current microwave photonic channelizers. This scheme has low requirements on optical comb performance and Binary Phase-Shift Keying (BPSK) code rate, which has great application prospects.
{"title":"Research on Bandwidth-Reconfigurable Microwave Photonic Filter Based On SBS","authors":"Jing-wen Gong, Xiaojun Li, Qinggui Tan, D. Liang, Wei Jiang","doi":"10.1145/3291842.3291869","DOIUrl":"https://doi.org/10.1145/3291842.3291869","url":null,"abstract":"To solve the limitation that the electrical filter can only process the signal with specific bandwidth in a specific frequency, a frequency tunable and bandwidth reconfigurable microwave photonic filter is proposed. Among them, the filter based on the stimulated Brillouin scattering effect has become one of the research hotspots due to its low threshold, simple implementation and inherent narrow bandwidth. The performance of the filter obtained by the three SBS gain spectrum expansion schemes is compared experimentally. It is proved that the scheme of using a 5-lines comb generated by the external modulator as the Brillouin pump, and controlling its amplitude spectrum shape by a binary phase shift keying vector signal with the code rate of 50 Mbps obtains the best filter performance. A filter with a 3dB bandwidth of 196MHz, a 20dB form factor of 1.31, an in-band ripple of less than 3.5dB, and an out-of-band rejection ratio of more than 20dB is obtained experimentally. Its excellent performance can meet the requirements of hundreds of megahertz filters required by current microwave photonic channelizers. This scheme has low requirements on optical comb performance and Binary Phase-Shift Keying (BPSK) code rate, which has great application prospects.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"221 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":"114854681","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}
Multimodal Transport (MT) is an emerging strategy for pursuing Sustainable City Logistics Management (SCLM) in advanced economies but less focused on in developing countries like Ghana. Generally, the study seeks potential solutions to SCLM challenges and specifically evaluates the impact of MT factors that constitute effective SCLM practices in Ghana. The aim is to analyze the strategies of MT components on SCLM performance. Methods adopted were literature review, interview, and survey questionnaire admin. Results indicated, there exists strong positive relationship between air and road and moderate positive links between water and air modes in supporting SCLM performances in Ghana. Again, efficient MTS requires transport modes with more developed infrastructure that significantly aid SCLM. State-of-the art MTS strategies for attaining SCLM were highlighted.
{"title":"Impact of Multimodal Transport Strategy on Promoting Sustainable City Logistics Management: Application of Factor Analysis Technique","authors":"S. Okyere, Jiaqi Yang, B. Zhan","doi":"10.1145/3291842.3291886","DOIUrl":"https://doi.org/10.1145/3291842.3291886","url":null,"abstract":"Multimodal Transport (MT) is an emerging strategy for pursuing Sustainable City Logistics Management (SCLM) in advanced economies but less focused on in developing countries like Ghana. Generally, the study seeks potential solutions to SCLM challenges and specifically evaluates the impact of MT factors that constitute effective SCLM practices in Ghana. The aim is to analyze the strategies of MT components on SCLM performance. Methods adopted were literature review, interview, and survey questionnaire admin. Results indicated, there exists strong positive relationship between air and road and moderate positive links between water and air modes in supporting SCLM performances in Ghana. Again, efficient MTS requires transport modes with more developed infrastructure that significantly aid SCLM. State-of-the art MTS strategies for attaining SCLM were highlighted.","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":"114562289","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 the K x K multiple-input and multiple-output (MIMO) interference alignment (IA) communication system, for the problem of the traditional maximum signal to noise ratio (MAX-SINR) algorithm's poorly performed, a symbol detection aided maximum signal to interference and noise ratio (SDA-MAX-SINR) algorithm for IA is proposed. The algorithm improves the system's performance of the traditional MAX-SINR algorithm. First, the traditional MAX-SINR algorithm for IA is used to obtain the received signal. Next, based on the maximum signal to interference and noise ratio(SINR) criterion, the receiver interference suppression matrix and the transmitter precoding matrix are calculated by using the received signal directly. The simulation result shows that compared with the traditional MAX-SINR algorithm, the SDA-MAX-SINR algorithm has decreases the mean square error (MSE) and the bit error rate (BER) of the system effectively, improved the dependability of MIMO system obviously.
{"title":"Symbol Detection Aided Algorithm for Interference Alignment of Maximum Signal to Interference and Noise Ratio","authors":"G. Jia, X. Wang, Lu Wang, Jinxue Niu","doi":"10.1145/3291842.3291864","DOIUrl":"https://doi.org/10.1145/3291842.3291864","url":null,"abstract":"In the K x K multiple-input and multiple-output (MIMO) interference alignment (IA) communication system, for the problem of the traditional maximum signal to noise ratio (MAX-SINR) algorithm's poorly performed, a symbol detection aided maximum signal to interference and noise ratio (SDA-MAX-SINR) algorithm for IA is proposed. The algorithm improves the system's performance of the traditional MAX-SINR algorithm. First, the traditional MAX-SINR algorithm for IA is used to obtain the received signal. Next, based on the maximum signal to interference and noise ratio(SINR) criterion, the receiver interference suppression matrix and the transmitter precoding matrix are calculated by using the received signal directly. The simulation result shows that compared with the traditional MAX-SINR algorithm, the SDA-MAX-SINR algorithm has decreases the mean square error (MSE) and the bit error rate (BER) of the system effectively, improved the dependability of MIMO system obviously.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"78 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":"116260830","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}
A limit SNR(signal noise ratio) -1.6dB has been derived in continuous AWGN channel by shannon theorem. In this paper we study the channel capacity and limit SNR by series representation unlike iteration method for BI-AWGN(discrete binary input, continuous output) and rayleigh channel in BPSK modulation. The limit SNR is obtained under the help of Cesαro series summation rule. We figure out that BI-AWGN and rayleigh channel with (channel state information)CSI behave the same in limit SNR in terms of R → 0 and P → 0. For rayleigh channel without CSI, We solve it approximately by series expanded in R → 0 and an expression of capacity behaves more simple than the two others derived before.
{"title":"Shannon Limit of Coding in Wireless Communication","authors":"Maoke Miao, Chao Gao, H. Liang, Xiaofeng Li","doi":"10.1145/3291842.3291845","DOIUrl":"https://doi.org/10.1145/3291842.3291845","url":null,"abstract":"A limit SNR(signal noise ratio) -1.6dB has been derived in continuous AWGN channel by shannon theorem. In this paper we study the channel capacity and limit SNR by series representation unlike iteration method for BI-AWGN(discrete binary input, continuous output) and rayleigh channel in BPSK modulation. The limit SNR is obtained under the help of Cesαro series summation rule. We figure out that BI-AWGN and rayleigh channel with (channel state information)CSI behave the same in limit SNR in terms of R → 0 and P → 0. For rayleigh channel without CSI, We solve it approximately by series expanded in R → 0 and an expression of capacity behaves more simple than the two others derived before.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"65 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":"121113970","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}
Color image quantization, a form of lossy image compression, is the process of reducing the number of unique colors in an image without appreciable reduction in quality. Originally color quantization was developed for satisfying hardware constraints of the display devices that allowed only a limited number of colors to be displayed simultaneously. In this work primarily motivated by an attempt to study how the number of colors and the physical size of an image (in pixels) are related and we try to use a new algorithm, which reduces colors (apply quantization) when we zoom out the image and increases colors (restore lost colors) when we zoom in the image (dynamic color quantization). Our experiments show the relationship between dynamical quantization and image quality using different approaches.
{"title":"Studying Effects of Color Quantization an Image Zooming","authors":"Mohammed Alzaber, Zaid Al-Huda, Hui Yang","doi":"10.1145/3291842.3291855","DOIUrl":"https://doi.org/10.1145/3291842.3291855","url":null,"abstract":"Color image quantization, a form of lossy image compression, is the process of reducing the number of unique colors in an image without appreciable reduction in quality. Originally color quantization was developed for satisfying hardware constraints of the display devices that allowed only a limited number of colors to be displayed simultaneously. In this work primarily motivated by an attempt to study how the number of colors and the physical size of an image (in pixels) are related and we try to use a new algorithm, which reduces colors (apply quantization) when we zoom out the image and increases colors (restore lost colors) when we zoom in the image (dynamic color quantization). Our experiments show the relationship between dynamical quantization and image quality using different approaches.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"21 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":"125917709","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 the traditional research method of channel state information, the average value of a certain subcarrier or all subcarriers is usually used as the detection data. In the aspect of speed adaptive human detection, if the human body moves slowly in the detection environment, the influence on the channel state information may be small, resulting in low detection rate. In this paper, in view of the above problems, a speed adaptive indoor human detection method (SAHD) based on subcarrier dynamic selection is proposed. Among them, the method using the characteristics of subcarrier sensitivity difference, judging by the same time dynamic fluctuation of sub carrier selection sub carrier as test data, and analyzes the choice in the feature of channel state information, select the appropriate criteria for moving human body detection. Through comparison experiment, it is proved that SAHD is more accurate than traditional method in human detection at different moving speed.
{"title":"Speed Adaptive Indoor Human Detection Method Based on Subcarrier Dynamic Selection","authors":"Pei Wang, Dapeng Man, Hao Zhou","doi":"10.1145/3291842.3291910","DOIUrl":"https://doi.org/10.1145/3291842.3291910","url":null,"abstract":"In the traditional research method of channel state information, the average value of a certain subcarrier or all subcarriers is usually used as the detection data. In the aspect of speed adaptive human detection, if the human body moves slowly in the detection environment, the influence on the channel state information may be small, resulting in low detection rate. In this paper, in view of the above problems, a speed adaptive indoor human detection method (SAHD) based on subcarrier dynamic selection is proposed. Among them, the method using the characteristics of subcarrier sensitivity difference, judging by the same time dynamic fluctuation of sub carrier selection sub carrier as test data, and analyzes the choice in the feature of channel state information, select the appropriate criteria for moving human body detection. Through comparison experiment, it is proved that SAHD is more accurate than traditional method in human detection at different moving speed.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"3 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":"128362431","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 letter, we proposed a novel scheme for the realization of scalable and flexible semi-quantum secret sharing between a boss and multiple dynamic agent groups. In our scheme, the boss Alice can not only distribute her secret messages to multiple users, but also can dynamically adjust the number of users and user groups based on the actual situation. Furthermore, security analysis demonstrates that our protocol is secure against both external attack and participant attack. Compared with previous schemes, our protocol is more flexible and practical. In addition, since our protocol involving only single qubit measurement that greatly weakens the hardware requirements of each user.
{"title":"A Scalable and Flexible Multi-User Semi-Quantum Secret Sharing","authors":"Gang Cao, Chen Chen, Min Jiang","doi":"10.1145/3291842.3291857","DOIUrl":"https://doi.org/10.1145/3291842.3291857","url":null,"abstract":"In this letter, we proposed a novel scheme for the realization of scalable and flexible semi-quantum secret sharing between a boss and multiple dynamic agent groups. In our scheme, the boss Alice can not only distribute her secret messages to multiple users, but also can dynamically adjust the number of users and user groups based on the actual situation. Furthermore, security analysis demonstrates that our protocol is secure against both external attack and participant attack. Compared with previous schemes, our protocol is more flexible and practical. In addition, since our protocol involving only single qubit measurement that greatly weakens the hardware requirements of each user.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"26 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":"129499555","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：