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The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)最新文献

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Digital lightwave receiver employing parallel-DSP-based equalization technique for 100 Gbps 1000-km RZ-DQPSK optical communication system 采用并行dsp均衡技术的数字光波接收机用于100gbps 1000km RZ-DQPSK光通信系统
The 2011 International Conference on Advanced Technologies for Communications (ATC 2011) Pub Date : 2011-09-26 DOI: 10.1109/ATC.2011.6027455
A. V. Nguyen, H. P. Nguyen, Nguyen Binh Le, Van Dang
{"title":"Digital lightwave receiver employing parallel-DSP-based equalization technique for 100 Gbps 1000-km RZ-DQPSK optical communication system","authors":"A. V. Nguyen, H. P. Nguyen, Nguyen Binh Le, Van Dang","doi":"10.1109/ATC.2011.6027455","DOIUrl":"https://doi.org/10.1109/ATC.2011.6027455","url":null,"abstract":"We demonstrate by simulation a parallel decision feedback equalization (DFE) technique at multi-GSa/s sampling rate employing recursive least square (RLS) and mean square error (MSE) adaptive algorithms to mitigate the chromatic dispersion (CD) and nonlinear impairments in 100 Gbps 1000 km long-haul optically amplified fiber transmission systems under RZ-DQPSK modulation formats. The digital equalizer is embedded in the coherent lightwave receiver in cascade with the electronic preamplifier and an ADC. RLS algorithm offers a CD tolerance of nearly 300 kms of G652 Standard Single Mode Fiber; while the MSE algorithms can tolerate only about 240 kms. Our simulation for the long haul optical transmission system is developed on the Matlab Simulink platform.","PeriodicalId":221905,"journal":{"name":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116596354","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: 3
New antenna design for IEEE 802.11b and IEEE 802.11n WLAN standards 针对IEEE 802.11b和IEEE 802.11n WLAN标准的新天线设计
The 2011 International Conference on Advanced Technologies for Communications (ATC 2011) Pub Date : 2011-09-26 DOI: 10.1109/ATC.2011.6027487
M. Tran
{"title":"New antenna design for IEEE 802.11b and IEEE 802.11n WLAN standards","authors":"M. Tran","doi":"10.1109/ATC.2011.6027487","DOIUrl":"https://doi.org/10.1109/ATC.2011.6027487","url":null,"abstract":"This paper describes new method of modeling radio communications systems by using MIMO antenna. The paper concentrates on studying, designing and manufacturing a dual band and multi-input multi-output (MIMO) antenna. This antenna can work in WLAN bands of 2.4 GHz and 5 GHz frequencies. Antenna is printed on FR-4 substrate with size of 40 mm × 65 mm, thickness of 1.6 mm and relative permittivity of 4.4. The propose antenna is experimentally studied.","PeriodicalId":221905,"journal":{"name":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116600786","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
An efficient and message-optimal multicast routing protocol in mobile ad-hoc networks 移动ad-hoc网络中一种高效且消息优化的组播路由协议
The 2011 International Conference on Advanced Technologies for Communications (ATC 2011) Pub Date : 2011-09-26 DOI: 10.1109/ATC.2011.6027459
H. Nguyễn, D. Nguyen
{"title":"An efficient and message-optimal multicast routing protocol in mobile ad-hoc networks","authors":"H. Nguyễn, D. Nguyen","doi":"10.1109/ATC.2011.6027459","DOIUrl":"https://doi.org/10.1109/ATC.2011.6027459","url":null,"abstract":"This paper presents a novel protocol for multicasting in mobile ad-hoc networks named Spanning Tree for Multicasting (STM), which establishes and maintains the spanning tree for each multicast group using optimal control packets, without requiring any underlying unicast routing protocol or any pre-configured state of group. Based on the original idea of optimal maintenance of a spanning tree (OMST), we improve this algorithm considerably and propose our multicast protocol, as well as implement it as an extension of simulator NS-2. We compare STM with MAODV and PUMA using NS-2 through various scenarios, the results show that STM attains top packet delivery ratio, while keeping less overhead than others. As far as we know, our implementation is the very first implementation inspired by OMST in practice.","PeriodicalId":221905,"journal":{"name":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127604083","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
Application of compressive sensing in time hopping multi-user UWB system 压缩感知在跳时多用户UWB系统中的应用
The 2011 International Conference on Advanced Technologies for Communications (ATC 2011) Pub Date : 2011-09-26 DOI: 10.1109/ATC.2011.6027477
Thuy-Dung Nguyen, V. Nguyen, T. Nguyen, Thanh Hieu Nguyen
{"title":"Application of compressive sensing in time hopping multi-user UWB system","authors":"Thuy-Dung Nguyen, V. Nguyen, T. Nguyen, Thanh Hieu Nguyen","doi":"10.1109/ATC.2011.6027477","DOIUrl":"https://doi.org/10.1109/ATC.2011.6027477","url":null,"abstract":"Recently, ultra-wideband (UWB) is one of the most attractive technologies in communications. UWB communication systems are designed to intent to low power, low cost, and low complexity devices. However, costly high-speed analog-to-digital converters (ADCs) is required to convert RF/IF signals to digital form for subsequent baseband processing in UWB system. By exploiting sparse property of UWB signal, using compressive sensing (CS) to reduce the sampling rate is a perspective approach. In this paper, we propose a UWB communications system using compressive sensing combined with time-hopping (TH) pulse position modulation (PPM) and pulse amplitude modulation (PAM), called CS-TH-UWB. This system is designed aims to reduce the sampling rate of the origin UWB system. CS technique possesses capability to implement under Nyquist sampling rate at transmitter side. At the receiver side, the under Nyquist rate samples are reconstructed with an acceptable loss. The simulation of this system is carried out to evaluate the BER of CS-TH-UWB. The results show that at low compression ratio of sampling rate, the different in BER performance is negligible. The higher compression ratio is the more degradation of BER performance.","PeriodicalId":221905,"journal":{"name":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133405108","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
Loss compensated high-Q tunable basspass filter using microstrip ring resonators 使用微带环形谐振器的损耗补偿高q可调谐巴斯通滤波器
The 2011 International Conference on Advanced Technologies for Communications (ATC 2011) Pub Date : 2011-09-26 DOI: 10.1109/ATC.2011.6027464
Jia Chen, N. Luong, Xiaowei Zhu
{"title":"Loss compensated high-Q tunable basspass filter using microstrip ring resonators","authors":"Jia Chen, N. Luong, Xiaowei Zhu","doi":"10.1109/ATC.2011.6027464","DOIUrl":"https://doi.org/10.1109/ATC.2011.6027464","url":null,"abstract":"A loss compensated tunable bandpass filter based on varactor-tuned microstrip square ring resonators is presented, which has a tuning range of 698–802MHz and steep skirt frequency response. The filter employs a PHEMT ATF34143 with appropriate feedback elements acting as a negative resistance circuit which not only reduces the insertion loss but also increases Q-factor significantly. According to the simulation results, the filter has a 3-dB fractional bandwidth of 1% and an insertion loss of about 6.8dB.","PeriodicalId":221905,"journal":{"name":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134069156","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 tool for analysis and classification of sleep stages 一个分析和分类睡眠阶段的工具
The 2011 International Conference on Advanced Technologies for Communications (ATC 2011) Pub Date : 2011-09-26 DOI: 10.1109/ATC.2011.6027492
Quoc Khai Le, Quang Dang Khoa Truong, V. Vo
{"title":"A tool for analysis and classification of sleep stages","authors":"Quoc Khai Le, Quang Dang Khoa Truong, V. Vo","doi":"10.1109/ATC.2011.6027492","DOIUrl":"https://doi.org/10.1109/ATC.2011.6027492","url":null,"abstract":"Scoring sleep stages is a critical process in assessing several sleep studies and slumber disorders. Sleep is classified in two major states: non-rapid-eye-movement (non-REM) sleep and REM sleep. Non-REM sleep comprises stages N1, N2 and N3. We develop a tool for automatic scoring the stages of sleep following the rules of 2007 AASM (American Academy of Sleep Medicine). The study propose the algorithm to classify based on some different characteristics of each stage, due to using a device of polysomnography (PSG) in order to collect the signals of Electroencephalography (EEG), Electro-oculography (EOG) and Electromyography (EMG). Methods of analysis are Fast Fourier Transform (FFT), Candidate of REM (CREM) and Digital Signal Filters (High pass, Low pass, Notch Filter). PSG signals were recorded continuously overnight in 5 healthy volunteer students (19 – 25 years old, 4 males and 1 female). PSG data are analyzed in 30 second epochs (data windows) in offline mode. The main result of analysis and classification is a hypnogram which were compared with those obtained by an experienced human scorer.","PeriodicalId":221905,"journal":{"name":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117166107","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: 14
A geometric street scattering channel model for car-to-car communication systems 车对车通信系统的几何街道散射信道模型
The 2011 International Conference on Advanced Technologies for Communications (ATC 2011) Pub Date : 2011-09-26 DOI: 10.1109/ATC.2011.6027472
N. Avazov, M. Patzold
{"title":"A geometric street scattering channel model for car-to-car communication systems","authors":"N. Avazov, M. Patzold","doi":"10.1109/ATC.2011.6027472","DOIUrl":"https://doi.org/10.1109/ATC.2011.6027472","url":null,"abstract":"This paper presents a geometric street scattering channel model for car-to-car (C2C) communication systems under line-of-sight (LOS) and non-LOS (NLOS) propagation conditions. Starting from the geometric model, we develop a stochastic reference channel model, where the scatterers are uniformly distributed in rectangles in the form of stripes parallel to both sides of the street. We derive analytical expressions for the probability density functions (PDFs) of the angle-of-departure (AOD) and the angle-of-arrival (AOA). We also investigate the Doppler power spectral density (PSD) and the autocorrelation function (ACF) of the proposed model, assuming that the mobile transmitter (MT) and the mobile receiver (MR) are moving, while the surrounding scatterers are fixed. To validate the reference channel model, its Doppler parameters are compared to those of a real-world measured channel for urban and rural areas. The numerical results show a good fitting of the theoretical results to the computer simulations. The proposed geometry-based channel model allows to study the effects of the street scatterers on the performance of C2C communication systems.","PeriodicalId":221905,"journal":{"name":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124463976","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: 23
A novel signal acquisition method for GPS dual-frequency L1 C/A and L2C receivers 一种新的GPS双频L1 C/A和L2C接收机信号采集方法
The 2011 International Conference on Advanced Technologies for Communications (ATC 2011) Pub Date : 2011-09-26 DOI: 10.1109/ATC.2011.6027473
T. H. Ta, Son-Hong Ngo
{"title":"A novel signal acquisition method for GPS dual-frequency L1 C/A and L2C receivers","authors":"T. H. Ta, Son-Hong Ngo","doi":"10.1109/ATC.2011.6027473","DOIUrl":"https://doi.org/10.1109/ATC.2011.6027473","url":null,"abstract":"Together with the 30-year-old signal L1 C/A, the new signal L2C, offered by the modernized GPS program, assures a future for civil GPS dual-frequency receivers which propose a better performance than the current single-frequency ones. This paper introduces a novel combined acquisition method dedicated to the GPS dual-frequency L1 C/A and L2C receivers. The method exploits the capacity of both the signal channels as well as the advantages of differential signal processing. High detection sensitivity at a reasonable complexity is the main advantage of the proposed method with respect to others in literature.","PeriodicalId":221905,"journal":{"name":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129220347","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: 9
Optimal design for RFID antennas at frequency 2.45GHz 频率为2.45GHz的RFID天线优化设计
The 2011 International Conference on Advanced Technologies for Communications (ATC 2011) Pub Date : 2011-09-26 DOI: 10.1109/ATC.2011.6027484
Q. Tran, P. H. Phan
{"title":"Optimal design for RFID antennas at frequency 2.45GHz","authors":"Q. Tran, P. H. Phan","doi":"10.1109/ATC.2011.6027484","DOIUrl":"https://doi.org/10.1109/ATC.2011.6027484","url":null,"abstract":"Recently, many algorithms have been used in designing antennas for RFID tags as BSO, NMA … to achieve optimum gain for the antennas to increase range from reader to tag and enhance impedance matching. This paper presents Genetic Algorithms (GA) in the design of RFID tag antennas, namely Micro-strip Patch Antenna at 2.45 GHz. The input impedance of Microwave Chip Mμ Hitachi is 60 Ohms. An antenna is designed to match impedance with this chip, then simulated by CST Studio Suite and measured by Network Analyzer ZBV8 terminal.","PeriodicalId":221905,"journal":{"name":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121180636","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: 4
An efficient local and global model for image segmentation 一种高效的局部和全局图像分割模型
The 2011 International Conference on Advanced Technologies for Communications (ATC 2011) Pub Date : 2011-09-26 DOI: 10.1109/ATC.2011.6027480
Quang Tung Thieu, M. Luong, J. Rocchisani, Dat Tran, E. Viennet
{"title":"An efficient local and global model for image segmentation","authors":"Quang Tung Thieu, M. Luong, J. Rocchisani, Dat Tran, E. Viennet","doi":"10.1109/ATC.2011.6027480","DOIUrl":"https://doi.org/10.1109/ATC.2011.6027480","url":null,"abstract":"In this paper, a new region-based active contour model using a variational level set formulation is proposed for image segmentation. The model is based on curve evolution, local statistical function and level set method. The energy function for the proposed model consists of two components: global component and local component. By introducing the local term, the images with intensity inhomogeneities can be efficiently segmented. Moreover, a smoothness regularization is derived from a Gaussian filtering term. This allows avoiding re-initialization while ensuring the smoothness of the level set function. The addition of the global term makes the model more flexible to the location of initial contour. Experimental results show that our method is less sensitive to the location of initial contour and demonstrate the performance of our model.","PeriodicalId":221905,"journal":{"name":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125124015","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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