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

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Parameter tuning of robot audition using speech recognition system as evaluation function 以语音识别系统为评价函数的机器人试听参数调整
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388334
M. Matsumoto
{"title":"Parameter tuning of robot audition using speech recognition system as evaluation function","authors":"M. Matsumoto","doi":"10.1109/ATC.2015.7388334","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388334","url":null,"abstract":"This paper describes parameter tuning of robot audition combining spectral subtraction and speech recognition system. Noise reduction is a key factor for robot audition. It requires some tuning depending on the environment, and we normally set the parameter of noise reduction system so that the error between the objective signal and the signal after noise reduction becomes minimal. However, the objective signal is usually unknown in practice, and the recognition rate is not always the best when the error is minimal. In this paper, spectral subtraction is selected as a simple noise reduction method to evaluate our approach, and the performance of the proposed method is investigated.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"59 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":"117319249","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
Design of compact EBG structure for array antenna application 用于阵列天线的紧凑型EBG结构设计
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388315
H. N. B. Phuong, Hồ Văn Phi, N. K. Kiem, Dang Nhu Dinh, T. M. Tuan, D. Chien
{"title":"Design of compact EBG structure for array antenna application","authors":"H. N. B. Phuong, Hồ Văn Phi, N. K. Kiem, Dang Nhu Dinh, T. M. Tuan, D. Chien","doi":"10.1109/ATC.2015.7388315","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388315","url":null,"abstract":"In this paper, a compact electromagnetic bandgap (EBG) structure is presented. In order to achieve the size reduction, additional equivalent capacitance and equivalent inductance are produced in three design steps. The total capacitance and inductance of the proposed structure will be increased much more than the one of the mushroom-like EBG in the literature. Dispersion diagram is presented to show the bandgap characteristics. The comparison between the proposed EBG structure and different EBG structures are carried out. The proposed EBG structure exhibit a tremendous size reduction of 61%. With the aim of reducing the mutual coupling of the array patch antenna, a 2×7 EBG cells are inserted between two elements of an array antenna operating at 5.1 GHz. As the measured results, the mutual coupling has been reduced 20 dB than the one of array antenna without EBG structures.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"28 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":"133755191","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: 5
A parallel-routing network for reliability inferences of single-parity-check decoder 一种用于单奇偶校验解码器可靠性推断的并行路由网络
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388304
Qing Lu, Zhuoer Shen, Chiu-Wing Sham, F. Lau
{"title":"A parallel-routing network for reliability inferences of single-parity-check decoder","authors":"Qing Lu, Zhuoer Shen, Chiu-Wing Sham, F. Lau","doi":"10.1109/ATC.2015.7388304","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388304","url":null,"abstract":"The computation of the reliability inferences among the variables of a single-parity-check (SPC) code is a common challenge to the implementation of channel decoders. Applicable to a variety of computational mechanisms using disparate kernels, a parallel-routing network has been developed, which is, compared to the state-of-art structure, exploring the best of its parallel nature for an improved timing performance. Furthermore, we assure that the proposed structure has no degradation in neither computation accuracy nor hardware complexity. With this structure, the LUT-based method becomes the optimal solution as a whole to implement an SPC decoder and other decoders containing it, like, for example, a low-density parity-check (LDPC) decoder. The improvement of the proposed design has been verified by a field-programmable gate array (FPGA), showing a 186% increase in clock rate for a 32-degree SPC decoder.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"58-60 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":"134282585","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: 19
A SIFT-based approach of recognition of remotely mobile phone captured text images 基于sift的远程手机文本图像识别方法
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388337
Binh Quang Long Mai, T. Huynh, Anh Dong Doan
{"title":"A SIFT-based approach of recognition of remotely mobile phone captured text images","authors":"Binh Quang Long Mai, T. Huynh, Anh Dong Doan","doi":"10.1109/ATC.2015.7388337","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388337","url":null,"abstract":"Mobile phones have been the trending and indispensable devices to many people these days. With the advancement of science and technology, inexpensive and versatile phones can be easily found at one's disposal. The field of Optical Character Recognition (OCR) is also promoted, as OCR mobile applications are increasingly chosen. This paper addresses an approach to solve one challenging issue of OCR, which is, recognition of text images taken by mobile phones at remote distances. These images usually appear in small font size and at low resolution, as a result, yield very poor outcomes when fed to OCR systems. The remote text images are first analyzed using the vertical projection profile. Then the words and characters are extracted, respectively, after determining the location of peaks and space in the graph. Finally, SIFT algorithm is applied in recognition stage, using the low resolution text templates collected, to find the best match for the texts. The results showed an improved performance in OCR recognition rate, compared to OCR reading software.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"284 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":"132231112","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
X-band TR module for radar and wireless communication systems 用于雷达和无线通信系统的x波段TR模块
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388316
P. Nguyen, L. Phan, T. Nguyen, Van-Su Tran, C. Huynh
{"title":"X-band TR module for radar and wireless communication systems","authors":"P. Nguyen, L. Phan, T. Nguyen, Van-Su Tran, C. Huynh","doi":"10.1109/ATC.2015.7388316","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388316","url":null,"abstract":"The paper presents the design and fabrication of an X-band transmit receive module operating in the frequency range of 9.25 to 10.75 GHz. The proposed TR module consists of a circulator, a power amplifier and a low-noise amplifier, which are fabricated using hybrid microwave integrated circuit technology. Amplifier design procedures are presented with focuses on stability improvement, wideband matching and noise matching techniques to improve amplifiers' performances. The designed power amplifier with good input and output matching exhibits 15-dB power gain and provides measured output power of 15.1 dBm and OP1dB of 22.5 dBm. The designed low noise amplifier has a very low measured noise figure of 2 dB and a high gain of 20 dB over the whole bandwidth, good input/output matching is also achieved with measured S11 and S22 smaller than -10 and -12 dB, respectively. Amplifiers are integrated with circulator to build a complete TR module which helps extend operating range of radar and wireless communication systems.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"111 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":"123814897","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
Performance analysis of IEEE 802.11n CSMA/CA 4×4 multi-user MIMO in erroneous channel IEEE 802.11n CSMA/CA 4×4错误信道下多用户MIMO性能分析
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388360
DucChau Thanh, Gyoung Tae Ha, Seokjoo Shin
{"title":"Performance analysis of IEEE 802.11n CSMA/CA 4×4 multi-user MIMO in erroneous channel","authors":"DucChau Thanh, Gyoung Tae Ha, Seokjoo Shin","doi":"10.1109/ATC.2015.7388360","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388360","url":null,"abstract":"Multi-user multiple-input multiple-output (MU-MIMO) aware carrier sense multiple access with collision avoidance (CSMA/CA) is a simple MAC-layer approach toward MIMO adaptability in next generation IEEE 802.11n to boost the overall network performance. However, it is hypothetically that, the performance in terms of MAC throughput and delay of CSMA/CA-adopted MU-MIMO WLANs significantly degrade as the number of active stations increases, especially in scenarios where each station's load approaches its saturated condition as well as in environments where channels experience faded. In this paper, we propose modified MAC-layer control frames including request-to-send and control-to-send frames for CSMA/CA 4×4 MU-MIMO transmission. We then numerically model a system adapted Markovian chain to characterize the exponential backoff distribution of CSMA/CA process in 4× 4 MU-MIMO WLAN scenario, taking the erroneous channel into account. Based on the probability model, the network performance in terms of MAC saturation throughput and average access delay are analyzed. The numerical results clearly demonstrate the substantial impacts of the number of active stations involved in transmission as well as erroneous channel on the performance.","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":"129776789","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
Performance evaluation of multiple RPL routing tree instances for Internet of Things applications 物联网应用中多个RPL路由树实例的性能评估
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388321
M. Banh, Hieu Mac, Nam Nguyen, Kieu-Ha Phung, Nguyen Huu Thanh, K. Steenhaut
{"title":"Performance evaluation of multiple RPL routing tree instances for Internet of Things applications","authors":"M. Banh, Hieu Mac, Nam Nguyen, Kieu-Ha Phung, Nguyen Huu Thanh, K. Steenhaut","doi":"10.1109/ATC.2015.7388321","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388321","url":null,"abstract":"To meet the development of Internet of Things (IoT), IETF has proposed IPv6 standards working under low-power and low-cost constraints. In this paper, we provide insights on RPL (routing protocol for low power and lossy networks) under the condition of multiple RPL instances. For the study, we use the Contiki operating system, together with the COOJA simulator. Our work investigates the use of two distinctive objective functions under multiple RPL instances for differentiating QoS at network layer in WSNs. The metrics evaluated include routing tree convergence, latency and packet delivery ratio. The study can also serves as a basis for future enhancement of the use of multiple RPL instances for a plethora of IoT applications.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"1 2 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":"128962310","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: 37
Optimization of structural and technological parameters of the field effect Hall sensor 场效应霍尔传感器结构和工艺参数的优化
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388410
V. Volchek, I. Lovshenko, V. Stempitsky, Dao Dinh Ha, A. Belous, V. Saladukha
{"title":"Optimization of structural and technological parameters of the field effect Hall sensor","authors":"V. Volchek, I. Lovshenko, V. Stempitsky, Dao Dinh Ha, A. Belous, V. Saladukha","doi":"10.1109/ATC.2015.7388410","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388410","url":null,"abstract":"The results of optimization of magnetically sensitive element Field Hall sensor based on the MIS structure formed on a \"silicon-on-insulator\" (SOI LSF) parameters was presented. Main characteristics of device structure were defined using the results of Silvaco software simulation.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"15 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":"117198864","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
Energy efficient clustering using tree balancing algorithms in wireless sensor networks 基于树平衡算法的无线传感器网络节能聚类
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388318
Hyunduk Kim, Chulki Kim, Jaehun Kim, M. Seo, Seok Lee, Taikjin Lee
{"title":"Energy efficient clustering using tree balancing algorithms in wireless sensor networks","authors":"Hyunduk Kim, Chulki Kim, Jaehun Kim, M. Seo, Seok Lee, Taikjin Lee","doi":"10.1109/ATC.2015.7388318","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388318","url":null,"abstract":"Various hierarchical clustering schemes have been proposed in order to efficiently maintain the energy consumption of sensor nodes. Most of these schemes, however, are hardly applicable in practice since these schemes might produce unbalanced clusters or randomly distributed clusters without consideration for the distribution of sensor nodes. To overcome the limitations of such hierarchical clustering schemes, we propose a novel scheme called CUTA (Clustering Using Tree-balancing Algorithm) that exploits node split and merge algorithms of tree-based indexing structures to efficiently construct clusters. Our extensive performance studies show that CUTA produces highly balanced clustering in an energy efficient way and achieves up to 1.4 times higher performance than the previous clustering schemes, under various operational conditions.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"36 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":"124982033","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
Isolated vietnamese handwriting recognition embedded system applied combined feature extraction method 孤立越南文手写识别嵌入式系统采用组合特征提取方法
2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI: 10.1109/ATC.2015.7388375
T. T. Van, Phi Nguyen Huu, Trang Hoang
{"title":"Isolated vietnamese handwriting recognition embedded system applied combined feature extraction method","authors":"T. T. Van, Phi Nguyen Huu, Trang Hoang","doi":"10.1109/ATC.2015.7388375","DOIUrl":"https://doi.org/10.1109/ATC.2015.7388375","url":null,"abstract":"In this research, an embedded system approaching isolated Vietnamese handwriting upper case recognition is illustrated. Obtained results from experiments have experienced that proposed feature extraction method, a major step of complete character recognition scheme, combining contour profile and projection histogram techniques is superior to others. Furthermore, the full conceptual system performance is evaluated on the embedded system, namely BeagleBoard-xM board, to confirm that recognition probability is up to more 90% over 27000 characters over thirty different persons.","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":"122939562","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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