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2015 International Conference on Advanced Technologies for Communications (ATC)最新文献

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Optimization of defected-core photonic crystal fiber for salt solution sensing using finite element method and factorial analysis 基于有限元和析因分析的盐溶液传感缺陷芯光子晶体光纤优化
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388383
P. Q. Thai, B. M. Azizur Rahman
{"title":"Optimization of defected-core photonic crystal fiber for salt solution sensing using finite element method and factorial analysis","authors":"P. Q. Thai, B. M. Azizur Rahman","doi":"10.1109/ATC.2015.7388383","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388383","url":null,"abstract":"In this paper, finite element method and factorial analysis were applied to build the empirical model for phase propagation constant of lightwave in defected-core photonic crystal fiber. By combing both methods, we were able to provide complete analysis of phase propagation constant as a function of fiber's structure. The empirical model was also used to optimize a salt solution sensor system using defected-core photonic crystal fiber in term of sensing resolution.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121795597","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}
引用次数: 0
BER analysis of proactive relay selection in underlay cognitive networks 基础认知网络中主动中继选择的误码率分析
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388328
H. Khuong, V. Son, L. Tra, P. Liên
{"title":"BER analysis of proactive relay selection in underlay cognitive networks","authors":"H. Khuong, V. Son, L. Tra, P. Liên","doi":"10.1109/ATC.2015.7388328","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388328","url":null,"abstract":"This paper proposes a BER (bit error rate) analysis framework for proactive relay selection (PRS) in underlay cognitive networks with channel information imperfection (CII), maximum transmit power constraint, interference power constraint, independent non-identical (i.n.i) Rayleigh fading distributions, and arbitrary modulation level. The analysis provides exact and asymptotic BER expressions, which facilitate in promptly evaluating system performance without time-consuming simulations and providing important performance metrics such as diversity order. Numerous results illustrate that CII considerably increases the BER of the PRS and completely eliminates its diversity order. However, the effect of CII can be significantly mitigated by increasing the number of relays.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132489789","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}
引用次数: 0
A novel CPW-fed fractal antenna for UWB with dual notched-bands 一种新型双陷波带超宽带cpw馈电分形天线
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388405
V. V. Yem, C. Pham, Vu Thanh Luan, N. X. Quyen
{"title":"A novel CPW-fed fractal antenna for UWB with dual notched-bands","authors":"V. V. Yem, C. Pham, Vu Thanh Luan, N. X. Quyen","doi":"10.1109/ATC.2015.7388405","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388405","url":null,"abstract":"The paper presents a compact coplanar waveguide (CPW)-fed ultra-wideband (UWB) printed antenna with a dual band rejection. Implemented with developed fractal structures-based Koch shape, the proposed antenna uses a complementary split ring resonator (CSRR) etched into a single layer to obtain the dual band-notched function. Also integrated with a new feeding method, four different antenna designs are optimized, simulated and measured. The final antenna occupies a compact area of 20 × 26.4 × 0.81 mm2 and has an impedance bandwidth of covering from 3.1GHz to 10.6 GHz for VSWR less than 2 with dual unwanted band notches of 3.3-3.6 GHz for WiMAX and 5.15-5.35 GHz for WLAN. The UWB-antennas demonstrate good omnidirectional radiation patterns in the H-plane, and bidirectional patterns in the E-plane like those of a small dipole.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133874223","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}
引用次数: 1
Simple miniaturized Wilkinson power divider using a compact stub structure 简单小型化的威尔金森功率分压器，采用紧凑的短根结构
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388313
H. P. Phan, T. Vuong, T. Nguyen, M. Luong, Y. Iitsuka, M. Hoang
{"title":"Simple miniaturized Wilkinson power divider using a compact stub structure","authors":"H. P. Phan, T. Vuong, T. Nguyen, M. Luong, Y. Iitsuka, M. Hoang","doi":"10.1109/ATC.2015.7388313","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388313","url":null,"abstract":"The paper presents a study on the miniaturization of microwave power dividers/ combiners. The authors propose a modified two-way Wilkinson power divider with dimensions of 33×24mm, twice reduced compared to the standard structure (65×24mm). This new structure has been designed based on an \"artificial transmission line\" consisting of a microstrip line and two shunt capacitors at its edges where the capacitors are replaced by two open-ended stubs located inside the circuit loop and do not take any additional space. The power divider has good performance at the designed frequency 900 MHz and its bandwidth of over 1 GHz is sufficient for various applications. The simulation has been performed in both Agilent ADS/ Momentum and CST Microwave Studio and good agreement of the results obtained in these design tools was obtained. Two prototypes have been fabricated and tested, and the measurement results fit well with the simulation. This approach can be applied to design other microwave circuits where quarter-wavelength transmission lines are required, and the modified Wilkinson power divider can be used for various applications such as measurement systems or in antenna array feeding circuits.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115198909","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}
引用次数: 10
A study of effectiveness of speech enhancement for cognitive load classification in noisy conditions 噪声条件下语音增强对认知负荷分类的有效性研究
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388370
P. Le, E. Ambikairajah, Tharmarajah Thiruvaran, T. Nguyen
{"title":"A study of effectiveness of speech enhancement for cognitive load classification in noisy conditions","authors":"P. Le, E. Ambikairajah, Tharmarajah Thiruvaran, T. Nguyen","doi":"10.1109/ATC.2015.7388370","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388370","url":null,"abstract":"In the last decade, speech-features have been effectively utilized for estimating cognitive load level in ideal conditions where recorded speech is clean. However, in more realistic conditions, the recorded speech data is corrupted by noise. Hence, the employment of speech enhancement is essential to reduce the noise. In this paper, the effectiveness of three speech enhancement algorithms proposed in our previous studies are compared based on performance and processing time and the most suitable method is utilized to denoise the input noisy speech before feeding it to a cognitive load classification system in order to improve its performance. The results of this study indicate that the use of speech enhancement can reduce 3.0% of average relative error rate for the system under the effect of various noisy conditions.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114692588","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}
引用次数: 0
Design and implementation of modbus slave based on ARM platform and FreeRTOS environment 基于ARM平台和FreeRTOS环境的modbus slave的设计与实现
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388372
Tan-Sy Nguyen, Thai-Hoang Huynh
{"title":"Design and implementation of modbus slave based on ARM platform and FreeRTOS environment","authors":"Tan-Sy Nguyen, Thai-Hoang Huynh","doi":"10.1109/ATC.2015.7388372","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388372","url":null,"abstract":"The paper introduces the design of Modbus slave based on Modbus RTU over RS-485 and its implementation. By designing a new software architecture and embedded open stacks, development lifetime is shortened as well as the software is easy to port, maintain, and reuse. A new approach inspired from Modbus functionality makes it easier for developer to divide program into three tasks and synchronize them. An ARM based Modbus slave hardware is built and experiments have been carried out to validate that this Modbus slave is a reliable and stable communication system. It acquires many desired properties of an industrial embedded network software.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117200062","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}
引用次数: 2
A multi-criteria-based DDoS-attack prevention solution using software defined networking 基于软件定义网络的多标准ddos攻击防御方案
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388340
P. V. Trung, Truong Thu Huong, Dang Van Tuyen, D. M. Duc, Nguyen Huu Thanh, Alan Marshall
{"title":"A multi-criteria-based DDoS-attack prevention solution using software defined networking","authors":"P. V. Trung, Truong Thu Huong, Dang Van Tuyen, D. M. Duc, Nguyen Huu Thanh, Alan Marshall","doi":"10.1109/ATC.2015.7388340","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388340","url":null,"abstract":"Software-Defined Networking (SDN) has become a promising network architecture in which network devices are controlled by a SDN Controller. Employing SDN offers an attractive solution for network security. However the attack prediction and Prevention, especially for Distributed Denial of Service (DDoS) attacks is a challenge in SDN environments. This paper, analyzes the characteristics of traffic flows up-streaming to a Vietnamese ISP server, during both states of normal and DDoS attack traffic. Based on the traffic analysis, an SDN-based Attack Prevention Architecture is proposed that is able to capture and analyze incoming flows on-the-fly. A multi-criteria based Prevention mechanism is then designed using both hard-decision thresholds and Fuzzy Inference System to detect DDoS attack. In response to determining the presence of attacks, the designed system is capable of dropping attacks flows, demanding from the control plane.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122164224","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}
引用次数: 40
Hybrid CQI estimation method for higher order MU-MIMO in LTE-A systems LTE-A系统中高阶MU-MIMO的混合CQI估计方法
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388299
Ali A. Esswie
{"title":"Hybrid CQI estimation method for higher order MU-MIMO in LTE-A systems","authors":"Ali A. Esswie","doi":"10.1109/ATC.2015.7388299","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388299","url":null,"abstract":"This paper addresses the problem of estimating the Multi-User Multiple Input Multiple Output (MU-MIMO) Channel Quality Indicator (CQI) from the reported Single-User MIMO rank-1 CQI. A hybrid MU-MIMO CQI estimation algorithm is proposed. Proposed algorithm applies a fixed back off offset to compensate the power sharing among co-scheduled users and a dynamic offset for Multi-User (MU) interference. Dynamic offset is estimated according to a closed-form formula in terms of MU Zero-Forcing Beamforming (ZFBM) pre-coders at each MU scheduling instant. Simulation results show that proposed scheme achieves significant outperformance than conventional estimation methods. Furthermore, the algorithm shows efficient performance balance between cell median and cell edge users. The proposed algorithm is tested under different MU ranks with emphasis on the received Block Error Rates and Modulation & Coding Schemes.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124889869","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}
引用次数: 0
Mobile distributed compressive sensing for data collection in wireless sensor networks 移动分布式压缩感知在无线传感器网络中的数据采集
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388317
M. Nguyen, K. Teague
{"title":"Mobile distributed compressive sensing for data collection in wireless sensor networks","authors":"M. Nguyen, K. Teague","doi":"10.1109/ATC.2015.7388317","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388317","url":null,"abstract":"Mobile sinks have been shown to balance energy and help to achieve uniform power consumption across wireless sensor networks (WSN). In this paper, a compressive sensing (CS) based algorithm for distributed mobile sensors to collect data from static sensors deployed in a sensing area is proposed. The mobile sensors deployed randomly in the field are capable as mobile sinks. They move randomly in the sensing area to collect sensory data from a certain number of static sensors to create CS measurements. The measurements are exchanged between the mobile sensors based on a defined transmission range. After each mobile sensor obtains all CS measurements from the others, it can implement a CS recovery algorithm to reconstruct all sensor readings from all the static sensors in the network to build a scalar map itself. All power consumption for data transmission between the mobile sensors is formulated, analyzed and simulated. The main elements of the network, including the number of mobile sensors, the transmission range, and the convergence time are analyzed and an optimal case for the network to consume the least power is shown.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128669082","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}
引用次数: 2
Simulation, design and fabrication of 4-element and 32-element rectenna array applying in the wireless power transmission 应用于无线电力传输的4元和32元整流天线阵列的仿真、设计与制作
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388384
D. C. Nguyen, N. H. Hoang, H. T. Lam, A. Dao
{"title":"Simulation, design and fabrication of 4-element and 32-element rectenna array applying in the wireless power transmission","authors":"D. C. Nguyen, N. H. Hoang, H. T. Lam, A. Dao","doi":"10.1109/ATC.2015.7388384","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388384","url":null,"abstract":"Recently the wireless power transmission (WPT) technology is a priority research direction in the world. The WPT can be divided into two main orientations: firstly WPT using inductive coupling, resonant coupling, and secondly WPT using the beam power technologies by microwave power beam and laser power beam. The WPT system with the beam power technology consists of a solar power satellite and rectenna array. The solar power satellite is composed of a large solar cell matrix to receive solar energy, microwave devices (or laser devices) to convert from solar energy into microwave (or laser) beam power, and a transmitting antenna array to transmit the power beam via the space to the rectenna array. The rectenna array receives microwave power beam and rectifies to DC power. The most important requirement for WPT using beam power technology is high collection efficiency. In order to get high collection efficiency, the rectenna array has to fulfill optimal requirement of its efficiency. This requirement plays a very important role in a wireless power transmission system. In this paper, we represent the simulation, design and the experimental fabrication of rectenna array with 4-element and 32-element rectenna array using micro strip dipole antennas with the integrated J shaped balun at the frequency of 2.45 GHz. Some simulation, design and fabrication results as well as several experimental measurement results of 4-element rectenna were shown and discussed.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127284173","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}
引用次数: 1
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