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

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A code scheme SFBC on 3GPP channel model in correlated MIMO-OFDMA system 相关MIMO-OFDMA系统中3GPP信道模型的编码方案SFBC
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043392
N. Nguyen, Bach Tran, V. Nguyen
{"title":"A code scheme SFBC on 3GPP channel model in correlated MIMO-OFDMA system","authors":"N. Nguyen, Bach Tran, V. Nguyen","doi":"10.1109/ATC.2014.7043392","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043392","url":null,"abstract":"This paper investigates the performance of spatial channel coding technique: a space-frequency block coding (SFBC) on the multi input multi output orthogonal frequency division multiplexing access (MIMO-OFDMA) system in correlation stochastic model. The channel model is based on the spatial channel model (SCM) approach, proposed by the 3rd Generation Partnership Project (3GPP) organization. The symbol error rate (SER) of MIMO systems in multipath propagation environment depends on the spatial correlation function of the channel particularly, dependent on antenna element distance in base station (BS) and mobile station (MS) sides. Based on an algorithm of Vertical Bell Laboratories Layered Space Time (V-BLAST), a successive cancellation method applied to the receiver, we obtain the high signal-noise rate (SNR) in correlation channel. The number of users when using SFBC with VBLAST is also calculated in the system, the more of the users the lower of the SERs. Our results are simulated on the SCM in three environments such as suburban-macro, urban-macro and urban-micro cell based on long term evolution (LTE) down link standard for 2×2 MIMO OFDMA system. The simulation results show that the combined SFBC code scheme with VBLAST-ZF has better performance than that obtained by using only detection when the same distance of antenna elements (correlation ratio) is used.","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":"126020045","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
Interference management over multicell broadcast channels 多小区广播信道的干扰管理
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043442
V. Nguyen-Duy-Nhat, H. Nguyen-Le, Chien Tang-Tan
{"title":"Interference management over multicell broadcast channels","authors":"V. Nguyen-Duy-Nhat, H. Nguyen-Le, Chien Tang-Tan","doi":"10.1109/ATC.2014.7043442","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043442","url":null,"abstract":"This paper is concerned with multiuser downlink transmissions in the presence of inter-cell interference (ICI). In the considered system, precoding at base stations (BS) and postcoding at users are jointly determined to manage both inter-user interference (IUI) and ICI under mean square error (MSE) criterion. Unlike zero-forcing based precoding, the proposed MSE-based precoding scheme still work as the number of transmit antennas at each BS is smaller than the total number of receive antennas at all users.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"30 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":"129467872","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
Calculation and measurement methods for RCS of a scale model airplane 某比例模型飞机RCS的计算与测量方法
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043358
Yoshihide Yamada, N. Michishita, Q. Nguyen
{"title":"Calculation and measurement methods for RCS of a scale model airplane","authors":"Yoshihide Yamada, N. Michishita, Q. Nguyen","doi":"10.1109/ATC.2014.7043358","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043358","url":null,"abstract":"The radar cross section (RCS) of an airplane is very important subject in a military use. As for a RCS estimation object, a scale down model is often employed for the ease of measurements. Recently, electromagnetic simulations of RCS become very convenient because of developments of high speed calculation methods such as MLFMM and HOBF in electromagnetic simulators employing MoM algorithm. As for measurements, high resolution measurements by time domain analysis are employed. In this paper, important characteristics with a scale model are briefly explained. As for calculation, comparisons between actual calculation abilities of MoM, MLFMM and HOBF are made at 18 GHz for 1/48 scale model. As for measurement, a high resolution measurement system employing a compact range and time domain analysis that is used in this study is explained. Next, calculated and measured results are compared in order to show the accuracies of obtained results. Moreover, the effective calculation method in increasing frequency is also investigated in order to estimate the actual RCS value.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"1 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":"129893727","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
An efficient approach based on Bayesian MAP for video super-resolution 一种基于贝叶斯MAP的视频超分辨率有效方法
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043444
Cao Bui-Thu, T. Do-Hong, T. Le-Tien, Hoang Nguyen-Duc
{"title":"An efficient approach based on Bayesian MAP for video super-resolution","authors":"Cao Bui-Thu, T. Do-Hong, T. Le-Tien, Hoang Nguyen-Duc","doi":"10.1109/ATC.2014.7043444","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043444","url":null,"abstract":"Multi-frame super-resolution brings out much potential to reconstruct real high-resolution video sequences. This potential is achieved based on its capacity to combine missing information from different input low-resolution frames. Although there have been many studies in recent decades, super-resolution problems for real-world video processing still have many challenges. This is dues to two problems of: how to address the affecting factors: motion, sampling and noise explicitly and how to solve them exactly and efficiently. This paper introduces an efficient approach for video super-resolution by addressing real motion, sampling and noise models. Based on that, we proposed a model for receiving a practical video and an efficient framework to estimate adaptively the motion and noise to reconstruct the original high-resolution frames. Our system achieves promising results when compare with other state-of-the-art in quality and processing time.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"50 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":"121968610","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
Exploring the gain of Opportunistic Routing in wireless Multicast 探讨机会路由在无线组播中的收益
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043441
Tan Le, Yong Liu
{"title":"Exploring the gain of Opportunistic Routing in wireless Multicast","authors":"Tan Le, Yong Liu","doi":"10.1109/ATC.2014.7043441","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043441","url":null,"abstract":"Opportunistic Routing (OR) has recently been proposed to improve the efficiency of unicast in multi-hop wireless networks. OR exploits the broadcast nature of wireless transmission medium and opportunistically selects a relay path to deliver a packet to its receiver. In this paper, we explore the gain of adopting OR in wireless multicast. The main challenge is to efficiently share opportunistic relay paths between multiple receivers. We proposed a scheme in [1] named Minimum Steiner Tree with Opportunistic Routing (MSTOR). In MSTOR, the source and receivers are connected by a Steiner tree. Packets are transmitted using Unicast OR on each link of the tree. MSTOR does not exploit opportunistic receptions cross different links in the tree. In this paper, we propose a Multicast OR (MOR) algorithm follow another approach. Starting from the source, MOR opportunistically employs a set of forwarders to push a packet closer to all receivers round-by-round. Each forwarder is responsible for sending the packet to a subset of receivers, and transmits the packet once each round. Based on packet receptions at the end of each round, a new forwarder set is constructed to maximize the Expect Transmission Advancement (ETA) towards all receivers. We study the performance improvement of MSTOR and MOR using numerical simulations. Our results demonstrate that both MOR and MSTOR can achieve a much higher multicast efficiency than the original Unicast OR and the traditional minimum multicast-tree based schemes. MOR constantly achieves significant transmission cost savings in all studied cases.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"49 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":"125237393","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
Novel technique for nonlinearity postcompensation of Mach-Zehnder modulator in an analog-optical link 模拟光链路马赫-曾德尔调制器非线性后补偿新技术
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043374
Trung-Hien Nguyen, T. Nguyen, T. Bui, N. Trang, Thanh Thuy Le
{"title":"Novel technique for nonlinearity postcompensation of Mach-Zehnder modulator in an analog-optical link","authors":"Trung-Hien Nguyen, T. Nguyen, T. Bui, N. Trang, Thanh Thuy Le","doi":"10.1109/ATC.2014.7043374","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043374","url":null,"abstract":"A novel technique for third-order distortion (TOD) suppression of a Mach-Zehnder modulator (MZM) in an analog-optical link is proposed and demonstrated by a numerical simulation. The results with analog input signal are presented in spectrum domain for the evaluation of link performance. A novel simple time-domain linearization scheme results in 44.5 dB spurious-free dynamic range (SFDR) improvement and allows optical modulation depths approaching π/2 radian. The peak-to-peak voltage of the modulated signal could then reach to Vπ with negligible impact of MZM distortion. The work presented here demonstrates that the performance of the analog-optical link increases significantly thanks to the proposed technique.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"14 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":"126528304","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
Physical layer secrecy performance over Rayleigh/Rician fading channels 瑞利/瑞利衰落信道的物理层保密性能
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043367
Dac-Binh Ha, T. Duong, Duc-Dung Tran, H. Zepernick, T. T. Vũ
{"title":"Physical layer secrecy performance over Rayleigh/Rician fading channels","authors":"Dac-Binh Ha, T. Duong, Duc-Dung Tran, H. Zepernick, T. T. Vũ","doi":"10.1109/ATC.2014.7043367","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043367","url":null,"abstract":"In this paper, we investigate the physical layer secrecy performance of a single-input single-output system that consists of single antenna devices and operates in the presence of a single antenna passive eavesdropper over dissimilar fading channels. In particular, we consider two scenarios in terms of dissimilar fading channel arrangements: the legal/illegal channels are subject to Rayleigh/Rician fading, respectively; and the legal/illegal channels are subject to Rician/Rayleigh fading, respectively. Specifically, analytical expressions for the probability of the existence of a non-zero secrecy capacity and the secrecy outage probability are derived by using statistical characteristics of the signal-to-noise ratio. Numerical results are provided for selected scenarios to illustrate applications of the developed analytical expressions.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"163 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":"127376176","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: 16
An empirical study on sentiment analysis for Vietnamese 越南人情绪分析的实证研究
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043403
N. T. Duyen, Ngo Xuan Bach, Tu Minh Phuong
{"title":"An empirical study on sentiment analysis for Vietnamese","authors":"N. T. Duyen, Ngo Xuan Bach, Tu Minh Phuong","doi":"10.1109/ATC.2014.7043403","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043403","url":null,"abstract":"This paper presents an empirical study on machine learning based sentiment analysis for Vietnamese, in which we focus on the task of sentiment classification. We investigate the task regarding both learning model and linguistics feature aspects. We also introduce an annotated corpus for sentiment classification extracted from hotel reviews in Vietnamese and conduct a series of experiments and analyses on that corpus. The paper provides useful information for further research as well as for building a real sentiment analysis system for Vietnamese.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"2 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":"130359314","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: 42
Renewal process - Application on energy-aware routing in cognitive radio ad hoc networks 更新过程-认知无线电自组织网络中能量感知路由的应用
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043467
Minh-Phuong Tran, Dong-Seong Kim
{"title":"Renewal process - Application on energy-aware routing in cognitive radio ad hoc networks","authors":"Minh-Phuong Tran, Dong-Seong Kim","doi":"10.1109/ATC.2014.7043467","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043467","url":null,"abstract":"In this paper, an energy-aware routing algorithm based on renewal process is proposed to choose highly competitive solutions for routing performance in cognitive radio ad hoc networks (CRANs). Moreover, we propose a new medium access scheme through spectrum forecast for secondary users to access the primary users' channels. Thereby, the proposed algorithm can allow selected routes corresponding to minimum energy possible between source and destination nodes in cognitive radio networks. The contribution of this paper is achieved through energy utilized in the network. Simulation results show that energy consumption, system throughput and end-to-end delay can be optimized by using proposed algorithms.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"38 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":"116698882","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
Indoor position estimation using image sensor based on VLC 基于VLC的图像传感器室内位置估计
2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI: 10.1109/ATC.2014.7043346
Myoung-geun Moon, Su-il Choi
{"title":"Indoor position estimation using image sensor based on VLC","authors":"Myoung-geun Moon, Su-il Choi","doi":"10.1109/ATC.2014.7043346","DOIUrl":"https://doi.org/10.1109/ATC.2014.7043346","url":null,"abstract":"Emerging white-light LEDs allow the combination of illumination and optical wireless communication in one optical source. Visible light communication (VLC) uses solid-state LEDs to broadcast information and is an attractive technology for indoor positioning system. In this paper, we propose a higher accuracy indoor positioning algorithm using a stereo image sensor and white-light LEDs by the visible light communication. Indoor white-light LEDs are located at the ceiling of a room and broadcast its position information by VLC technology. Mobile receiver with stereo image sensor receives LED position information by VLC and estimates its position and angle information. Simulation results are given to show the efficiency of proposed indoor positioning algorithm.","PeriodicalId":333572,"journal":{"name":"2014 International Conference on Advanced Technologies for Communications (ATC 2014)","volume":"5 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":"134614365","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: 22
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