{"title":"Analysis of partial relay selection in NOMA systems with RF energy harvesting","authors":"L. Dung, T. Hoang, Nguyen Trung Tan, S. Choi","doi":"10.1109/SIGTELCOM.2018.8325776","DOIUrl":"https://doi.org/10.1109/SIGTELCOM.2018.8325776","url":null,"abstract":"In this paper, we investigate a dual hop communication decode-and-forward relaying system where a source node wants to transmit two symbols to its two desired destinations with the help of a selected energy constraint relay node. The power for relay operation comes from the harvested energy of ambient radio frequency (RF) and the non-orthogonal multiple access (NOMA) technology is used. We mathematically evaluate the impact of relay selection (RS) on the system performance by considering the probability that symbols cannot be decoded at the two end users under the effect of imperfect and perfect successive interference cancellation (SIC). We also perform Monte-Carlo simulations in MATLAB to verify the correctness of our analysis. The results show that the performance of the system is significantly influenced by the efficiency of SIC technique. Moreover, if the power transmission is in high region, we can use approximation method to simplify our analysis.","PeriodicalId":236488,"journal":{"name":"2018 2nd International Conference on Recent Advances in Signal Processing, Telecommunications & Computing (SigTelCom)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133392155","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}
Phung Cong Phi Khanh, Ton That Long, Nguyen Dinh Chinh, Tran Duc-Tan
{"title":"Performance evaluation of a multi-stage classification for cow behavior","authors":"Phung Cong Phi Khanh, Ton That Long, Nguyen Dinh Chinh, Tran Duc-Tan","doi":"10.1109/SIGTELCOM.2018.8325774","DOIUrl":"https://doi.org/10.1109/SIGTELCOM.2018.8325774","url":null,"abstract":"Decision tree (DT) algorithm is a simple and effective method for classification of cow behavior. In order to evaluate the performance of this classifier, Receiver-Operating Characteristic (ROC) curve is used. However, this classification often consists of multiple stages of simpler classifiers with multi-level decision thresholds. This paper proposes to use a parallel of multiple thresholds in order to maximize one of statistical measures of performance (i.e. sensitivity, specificity, and precision), after the evaluation of the performance of the multi-stage system using a series of ROC and thresholds is done. The proposed method is then applied to the existing experimental data provided in literature in order to highlight its advantages.","PeriodicalId":236488,"journal":{"name":"2018 2nd International Conference on Recent Advances in Signal Processing, Telecommunications & Computing (SigTelCom)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117002272","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}
Minh-Thanh Vo, Ngoc-Hung Do, Van-Su Tran, Quang-Khanh Ma, Chi-Thong Le, Linh Mai
{"title":"A multi-storey building actuator and sensor system using 6L0WPAN based Internet of Things: Practical design and implementation","authors":"Minh-Thanh Vo, Ngoc-Hung Do, Van-Su Tran, Quang-Khanh Ma, Chi-Thong Le, Linh Mai","doi":"10.1109/SIGTELCOM.2018.8325785","DOIUrl":"https://doi.org/10.1109/SIGTELCOM.2018.8325785","url":null,"abstract":"The development of IPv6 has enabled the idea of IP-based Internet of Things where the every embedded device connected to the Internet has its unique IPv6 address. 6LoWPAN is proposed and defined by Internet Engineering Task Force (IETF) to be an adaption layer to apply IPv6 to the IEEE 802.15.4 standard, which allows direct access to control and monitor smart devices from over the world through Internet. 6LoWPAN-based Internet of Things technology is a scalable system which can help to lower expense and decrease the complexity of smart building monitoring and controlling system. This paper describes the design and implementation of a multi-storey building actuator and sensor system using 6LoWPAN-based Internet of Things. The system consists of low-power wireless building network based on 6LoWPAN using Contiki real-time operating system and COAP application protocol. The building HTTP-COAP proxy is implemented in gateway node provides an efficient data packet transferring which makes the system scalable and accessible to the world based on Ethernet or Wi-Fi Medium. A prototype smart building system has been implemented and evaluated in real multi-storey building environment which has the functions to monitor and control the electrical usage in the smart building. The testing results show that 6LoWPAN-based Internet of Things is a good solution for scalable actuator and sensor networks which can be applied not only multi-storey smart building but also for large scale smart city.","PeriodicalId":236488,"journal":{"name":"2018 2nd International Conference on Recent Advances in Signal Processing, Telecommunications & Computing (SigTelCom)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126122881","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}
Kyeongsoo Jang, H. Ryu, Sang-Burm Ryu, Sang Gyu Lee
{"title":"Performance comparison of 16-QAM and 16-DAPSK systems using nonlinear HPA","authors":"Kyeongsoo Jang, H. Ryu, Sang-Burm Ryu, Sang Gyu Lee","doi":"10.1109/SIGTELCOM.2018.8325791","DOIUrl":"https://doi.org/10.1109/SIGTELCOM.2018.8325791","url":null,"abstract":"When using HPA(High Power Amplifier) to amplify transmit power in a communication system, the nonlinear response of the HPA causes degradation of important performances such as power and spectral efficiency, BER. In this paper, we propose a case where a Saleh model is used as an HPA model in a communication system using 16-QAM (Quadrature Amplitude Modulation) and 16-DAPSK (Multi-level Modulation and Phase Shift Keying) The performance of each system was analyzed. The predistorter and IBO (Input Back Off) techniques were used to compensate for the nonlinear response of HPA. The IBO divided the cases with and without the predistorter and evaluated the performance by deriving the required IBO value according to each case. Simulation results show that the predistorter compensates the nonlinear response due to HPA in the constellation, spectrum and BER performance graph before and after using the predistorter. Also, the IBO value required for each system to be close to the theoretical value was confirmed by applying the IBO value differently.","PeriodicalId":236488,"journal":{"name":"2018 2nd International Conference on Recent Advances in Signal Processing, Telecommunications & Computing (SigTelCom)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129621405","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}
{"title":"Performance analysis of in-band full-duplex amplify-and-forward relay system with direct link","authors":"B. Nguyen, X. Tran, Dinh Tan Tran","doi":"10.1109/SIGTELCOM.2018.8325789","DOIUrl":"https://doi.org/10.1109/SIGTELCOM.2018.8325789","url":null,"abstract":"In this paper, we analyze performance of the inband full-duplex amplify-and-forward one-way relay system in which two terminal nodes operate in the half-duplex mode while the relay node in the full-duplex mode. Unlike previous works we consider the case of imperfect loop-interference cancellation at the full-duplex relay and assume that the direct link between the source and the destination nodes exists in the system. We show that the system performance in the case with the direct link is significantly improved over the case without this link. Using theoretical analysis we can obtain the closed-form of the approximate outage probability, throughput, achievable capacity and symbol error probability of the system. Based on this analysis an effective power allocation for the full-duplex mode is derived to improve the system performance. Numerical results are compared with simulated ones for different levels of residual loop-interference to verify the theoretical analysis.","PeriodicalId":236488,"journal":{"name":"2018 2nd International Conference on Recent Advances in Signal Processing, Telecommunications & Computing (SigTelCom)","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133587717","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}
{"title":"Secrecy performance analysis of QoS-based non-orthogonal multiple access networks over Nakagami-m fading","authors":"Duc-Dung Tran, Dac-Binh Ha","doi":"10.1109/SIGTELCOM.2018.8325787","DOIUrl":"https://doi.org/10.1109/SIGTELCOM.2018.8325787","url":null,"abstract":"In this paper, we consider the physical layer security of a downlink non-orthogonal multiple access (NOMA) system, in which users' quality of service (QoS) requirements are investigated to perform NOMA and all channels are assumed to follow Nakagami-m fading. Specifically, we investigate the scenario that a source transmits information to two legitimate users (LUs) using NOMA scheme in the presence of a passive eavesdropper, where each LU has the different priority based on its QoS requirements. In order to characterize the secrecy performance, the new closed-form expression of overall secrecy outage probability is derived. Finally, our theoretical analyses validated by Monte-Carlo simulation show that in QoS-based NOMA system, the better secrecy performance of overall communication process can be obtained in case that there is not much difference in the level of priority between LUs.","PeriodicalId":236488,"journal":{"name":"2018 2nd International Conference on Recent Advances in Signal Processing, Telecommunications & Computing (SigTelCom)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133845824","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}
{"title":"A new algorithm for viewshed computation on raster terrain","authors":"Thanh Hao-Nguyen, T. Duy, Anh Tra-Duong","doi":"10.1109/SIGTELCOM.2018.8325805","DOIUrl":"https://doi.org/10.1109/SIGTELCOM.2018.8325805","url":null,"abstract":"Viewshed is a geographical area that is visible from a given location. Viewshed computation from a given point is a complex problem and plays an indispensable role in many applications of military civil engineering such as electronic warfare simulation or wireless transmittance. There are some approaches applied to analyze viewshed such as R2 (Franklin and Rays method), sweep-line (Van Krevelds method). In this paper, a new approach that increases the order of accuracy and can be easily implemented is introduced: High Level Direction (HLD). This method implements a unique radar-like algorithm to divide terrain into sectors for analysis. Compared with the other methods such as R2 or sweep-line, the advantages of this approach are in its storage approach and handling of cached data to export the final viewshed results. In contrast with the Van Krevelds method, that uses the complicated AVL trees, HLD method uses only data structured in a vector type to keep the same computational speed and export high resolution results. HLD is flexible in the selection of its accuracy and complication since a parameter that helps to balance accuracy, computational complexity, and practical requirements is used. The simulation results show that the HLD approach improves the implementation compared to other viewshed calculation methods that have the same order of accuracy.","PeriodicalId":236488,"journal":{"name":"2018 2nd International Conference on Recent Advances in Signal Processing, Telecommunications & Computing (SigTelCom)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131555682","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}
{"title":"Outage probability of energy harvesting relay systems under unreliable backhaul connections","authors":"H. T. Nguyen, S. Q. Nguyen, W. Hwang","doi":"10.1109/SIGTELCOM.2018.8325788","DOIUrl":"https://doi.org/10.1109/SIGTELCOM.2018.8325788","url":null,"abstract":"In this paper, the performance of energy harvesting systems in the presence of unreliable backhaul links is investigated over independent but not necessarily identically distributed (i.n.i.d.) Nakagami-m fading channels. In particular, the energy-constrained relay uses the amount of harvested energy from the best small-cell transmitter based on time switching-based relaying (TRS) protocol to process for the next hop transmission. We derived the closed-form expression of the outage probability and the asymptotic expression in high signal-to-noise ratio (SNR) regime. Our results show that under the unreliable backhaul links the outage probability yields the error-floor in the high SNR regime which demonstrates the significant impact of the backhaul unreliability.","PeriodicalId":236488,"journal":{"name":"2018 2nd International Conference on Recent Advances in Signal Processing, Telecommunications & Computing (SigTelCom)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123374832","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}
{"title":"Uplink training for pilot decontamination in a multiceli massive MIMO system","authors":"Hieu V. Nguyen, Van-Dinh Nguyen, Oh-Soon Shinï","doi":"10.1109/SIGTELCOM.2018.8325813","DOIUrl":"https://doi.org/10.1109/SIGTELCOM.2018.8325813","url":null,"abstract":"In this paper, we investigate pilot contamination in a multiceli massive multiple-input multiple-output (MIMO) system, in which the estimated channel state information (CSI) suffers a crucial difference from the real CSI. Pilot contamination is an obstacle to the achievable rate for users. We propose an uplink training strategy to limit the effect of intercell pilot contamination on channel estimation with low complexity. As a result, the downlink data rate through the reciprocity channels is significantly improved, which is verified by numerical results.","PeriodicalId":236488,"journal":{"name":"2018 2nd International Conference on Recent Advances in Signal Processing, Telecommunications & Computing (SigTelCom)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125547160","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}
{"title":"Turning motion direction of fish robot driven by non-uniform flexible pectoral fins","authors":"Van Anh Pham, T. Nguyen, T. Vo","doi":"10.1109/SIGTELCOM.2018.8325800","DOIUrl":"https://doi.org/10.1109/SIGTELCOM.2018.8325800","url":null,"abstract":"Flexible fins own outstanding advantages in robotic fish locomotion, especially in high propulsive efficiency. This paper proposes a mechanism for changing the moving direction of fish robots in two-dimensional planes using flexible pectoral fins. Firstly, a mathematical model of the fish robot equipped with non-uniform flexible pectoral fins is introduced. In this model, the influences of fluid inertia, and drag of the surrounding fluid exerting on the fin surface is considered as the Morison force. Based on the energetic method, the Assume Mode Method (AMM) and Rayleigh-Ritz method, the solution for the body motion and deformation of the points on the flexible fins is derived. Secondly, the mechanism for steering the direction of robot swimming motion is proposed. Due to the complex influence of lift forces which are generated by pectoral fins on the robot orientation, a fuzzy logic controller is designed to stabilize the angle trajectory of the fish robot. Finally, the numerical simulations, the movement performances, and the control effectiveness are illustrated.","PeriodicalId":236488,"journal":{"name":"2018 2nd International Conference on Recent Advances in Signal Processing, Telecommunications & Computing (SigTelCom)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124449855","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}