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2014 International Conference on Advanced Technologies for Communications (ATC 2014)最新文献

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A new class of low phase noise vackar VCO in CMOS technology 一种新型的低相位噪声vackar压控振荡器
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043349
Jong‐Wook Lee, M. T. Gul, T. N. Nguyen
{"title":"A new class of low phase noise vackar VCO in CMOS technology","authors":"Jong‐Wook Lee, M. T. Gul, T. N. Nguyen","doi":"10.1109/ATC.2014.7043349","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043349","url":null,"abstract":"In this paper, we present differential Vackar voltage-controlled oscillator (VCO) implemented for the first time in CMOS technology. The Vackar VCO provides good isolation between LC tank and loss-compensating active circuit; thus, excellent frequency stability is achieved over the frequency tuning range. Simple analysis and simulations examine the transistor loading effect and amplitude stability. Results indicate that the Vackar VCO has improved amplitude stability compared to the Colpitts VCO. The improved amplitude stability is favorable for suppressing amplitude-to-phase (AM/PM) noise conversion. Two Vackar VCOs were fabricated to examine their phase noise. C-band Vackar VCO implemented in 0.18 μm RF CMOS shows oscillation frequency ranged from 4.85 to 4.93 GHz. The measured phase noise of the C-band Vackar VCO is -124.9 dB/Hz from 1 MHz offset at 4.9 GHz with a figure-of-merit (FOM) of -188 dBc/Hz. K-band Vackar VCO with gate inductive feedback is implemented in a 0.13 μm RF CMOS process. The oscillation frequency ranges from 19 to 19.95 GHz. The measured phase noise is -103 dBc/Hz from 1 MHz offset at 19.5 GHz with FOM of -182 dBc/Hz.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114767984","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
Secured communication in cognitive MIMO schemes under hardware impairments 硬件缺陷下认知MIMO方案的安全通信
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043366
Tran Trung Duy, Vo Nguyen Quoc Bao, T. Duong
{"title":"Secured communication in cognitive MIMO schemes under hardware impairments","authors":"Tran Trung Duy, Vo Nguyen Quoc Bao, T. Duong","doi":"10.1109/ATC.2014.7043366","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043366","url":null,"abstract":"In this paper, the impact of hardware impairments on secrecy performance of cognitive MIMO schemes is investigated. In addition, the relay which helps the source forward the source signal to the destination can operate either half-duplex mode or full-duplex mode. For performance evaluation, we give the expressions of average secrecy rate over Rayleigh fading channel. Monte-Carlo simulations are presented to compare and optimize the performance of the proposed schemes.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123868841","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 on Television White Space technology and its applicability in Vietnam 越南电视空白空间技术及其适用性研究
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043436
M. Tran, Thi Viet Phuong Dang, V. Hoang
{"title":"A study on Television White Space technology and its applicability in Vietnam","authors":"M. Tran, Thi Viet Phuong Dang, V. Hoang","doi":"10.1109/ATC.2014.7043436","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043436","url":null,"abstract":"This paper aims to study Television White Spaces (TVWS) technology for deployment of its applications in Vietnam. In this paper, theoretical and practical issues are discussed and concisely presented. At first, the general theory of TVWS technology was introduced, along with the detailed studies on conducting trials of this technology around the world. Subsequently, the article has conducted a study on experimenting with TVWS technology in Hanoi, Vietnam. On that basis, the paper offers suggestions on the possibility of developing this technology in Vietnam in the future.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123549157","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
Analog SC-FDE using single sideband technique 利用单边带技术模拟SC-FDE
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043409
T. H. Vo, Shinya Kumagai, F. Adachi
{"title":"Analog SC-FDE using single sideband technique","authors":"T. H. Vo, Shinya Kumagai, F. Adachi","doi":"10.1109/ATC.2014.7043409","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043409","url":null,"abstract":"In order to improve performance of analog signal transmission, we recently proposed a novel analog single-carrier transmission with frequency-domain equalization (analog SC-FDE). Analog SC-FDE adopts double sideband (DSB) technique (referred to as analog SC-DSB-FDE) to transmit signal. In this paper, in order to double the spectrum efficiency of analog SC-DSB-FDE, single sideband (SSB) technique is introduced. Analog SC-SSB-FDE applies discrete Fourier transform (DFT), frequency-domain spectrum shaping filter and mapping, inverse DFT (IDFT), and cyclic prefix (CP) insertion before transmission. At the receiver, one-tap FDE is applied to take advantage of frequency diversity and a spectrum copy for restoring spectrum is applied. By computer simulation, we show that analog SC-SSB-FDE achieves better normalized mean square error (NMSE) performance than conventional analog SSB transmission and keeps the performance quality similar to analog SC-DSB-FDE.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"63 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122406170","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
Adaptive bit truncation and restoration for baseband signal compression 基带信号压缩的自适应位截断与恢复
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043359
Junghoon Oh, Gweondo Jo, Bonghyuk Park
{"title":"Adaptive bit truncation and restoration for baseband signal compression","authors":"Junghoon Oh, Gweondo Jo, Bonghyuk Park","doi":"10.1109/ATC.2014.7043359","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043359","url":null,"abstract":"The distributed base station architecture is one of the good solutions to reduce the system complexity and manage the cellular mobile communication system more efficiently. Typical distributed base stations consist of base band units (BBUs) and remote radio heads (RRHs). RRHs are deployed apart from BBU and connected to it generally through a fiber optic cable. Compression of baseband signal is an efficient way to decrease the data rates on the fiber link between BBU and RRHs. This paper presents a compression and decompression scheme. It truncates least significant bits according to the largest absolute value in a block, thereby achieves lossy compression at each of I and Q data, respectively. It restores the signal by using proposed stuffing bits to suppress DC component in the signal and relieve signal to noise ratio degradation by compression and decompression. The simulation results suggest that the proposed scheme provides promising performance of error vector magnitude with low latency. It enables cost effective implementation since it does not require any multiply accumulate operation. Simple bit operations are needed in proposed scheme.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124909870","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
Modeling dynamic hand gesture based on geometric features 基于几何特征的动态手势建模
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043434
Duc-Hoang Vo, H. Huynh, Trong-Nguyen Nguyen
{"title":"Modeling dynamic hand gesture based on geometric features","authors":"Duc-Hoang Vo, H. Huynh, Trong-Nguyen Nguyen","doi":"10.1109/ATC.2014.7043434","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043434","url":null,"abstract":"Hand gesture identification is one of problems being widely studied. There are two research trends corresponding to two data types, which are static and dynamic gestures. The static gesture is recognized based on the hand shape, while motion is the main feature in identifying dynamic gestures. In this paper, we propose an approach for modeling the dynamic hand gestures based on a combination of two mentioned information. At first, the hand silhouette is extracted using a skin-color filter. A sequence of geometric manipulations is then performed to remove the possible arm. The characteristics which describe the hand shape and motion orientation are estimated. Finally, the k-means clustering technique is combined with hidden Markov model to model each dynamic gesture. The experiments are performed on human-computer interaction dataset and obtain high efficiency.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"301 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116191980","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
A particle cloud propagation algorithm for target tracking in Wireless Sensor Network 一种用于无线传感器网络目标跟踪的粒子云传播算法
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043454
B. Nguyen-Thanh, Phuong Duong-Minh, Dung Nguyen-Trung, Vinh Tran-Quang, Thu Ngo-Quynh
{"title":"A particle cloud propagation algorithm for target tracking in Wireless Sensor Network","authors":"B. Nguyen-Thanh, Phuong Duong-Minh, Dung Nguyen-Trung, Vinh Tran-Quang, Thu Ngo-Quynh","doi":"10.1109/ATC.2014.7043454","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043454","url":null,"abstract":"Target tracking is one of many important applications in Wireless Sensor Network (WSN). For this tracking application, it is necessary to implement some techniques such as estimation and prediction in order to determine state and position of an unknown target. In this paper, we propose a new particle cloud propagation algorithm that is based on Particle Filter for target tracking in WSN. The proposed method allows to track different kind of targets, including unfriendly targets in nonlinear and/or non-Gaussian environment. Our simulation result shows that the proposed method outperforms existing particle propagation algorithms, particularly in the case of high noisy environment.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116556888","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
Compressive sensing based energy-efficient random routing in wireless sensor networks 基于压缩感知的无线传感器网络节能随机路由
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043381
M. Nguyen, K. Teague
{"title":"Compressive sensing based energy-efficient random routing in wireless sensor networks","authors":"M. Nguyen, K. Teague","doi":"10.1109/ATC.2014.7043381","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043381","url":null,"abstract":"Using random walk (RW) to collect data in wireless sensor networks (WSN) has been proven to be an energy-efficient method. The integration between compressive sensing (CS) and RW provides some different points of view about data collection in WSNs. Based on a small certain number of CS measurements (M), all raw sensor readings from N nodes can be recovered at the base-station (M ≪ N). In this paper, we analyze RW based on theory and practice. We investigate the trade-off between exploring the measurement matrix and setting up the length for RWs to achieve the energy consumption smallest for WSNs. In addition, we formulate the total power consumption that contains the average consumed energy of each RW and the average consumed energy to send measurements in multi-hop through intermediate nodes from RWs to the base-station (BS). We analyze and suggest the optimal case for the networks to spend the lowest energy that helps sensors to prolong their lifetime or the network connection.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126828382","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
The direction-based evolutionary algorithm with a crowding mechanism 具有拥挤机制的基于方向的进化算法
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043379
Chi Cuong Vu, L. Bui
{"title":"The direction-based evolutionary algorithm with a crowding mechanism","authors":"Chi Cuong Vu, L. Bui","doi":"10.1109/ATC.2014.7043379","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043379","url":null,"abstract":"In evolutionary computation, crowding is a popular technique to handle multi-modal optimization problems, which include many possible local or global optimal solutions. In our previous publication, we proposed a new evolutionary algorithm, called DEAL (Direction-guided Evolutionary Algorithm). It works effectively on non-linear optimization problems. In this paper, we extend further DEAL towards the area of multi-modality by applying a crowding mechanism, called as CrowdingDEAL. We validated CrowdingDEAL algorithm with a wide range of benchmark problems. The obtained results indicated a strong performance of CrowdingDEAL in dealing with multi-modality and in comparison with other algorithms.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"75 24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127392537","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
Joint optimization of power allocation and integer coefficients of relay functions in Compute-and-Forward relay networks 计算转发中继网络中功率分配与中继函数整数系数的联合优化
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043472
Phuong T. Tran, J. Lehnert
{"title":"Joint optimization of power allocation and integer coefficients of relay functions in Compute-and-Forward relay networks","authors":"Phuong T. Tran, J. Lehnert","doi":"10.1109/ATC.2014.7043472","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043472","url":null,"abstract":"A joint optimization problem of power allocation and computational functions for the advanced cooperation scheme, Compute-and-Forward, is analyzed, and an iterative algorithm to solve this problem is also introduced.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128126860","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
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