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2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)最新文献

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Performance Evaluation of Turbo Decoding in DFTS-OFDM Systems Over V2V Channel V2V信道上DFTS-OFDM系统Turbo译码性能评价
2018 IEEE 10th Latin-American Conference on Communications (LATINCOM) Pub Date : 2018-11-01 DOI: 10.1109/LATINCOM.2018.8613202
J. A. D. Puerto-Flores, Lennin C. Yllescas-Calderon, R. Parra-Michel, F. Peña-Campos, J. Cortez
{"title":"Performance Evaluation of Turbo Decoding in DFTS-OFDM Systems Over V2V Channel","authors":"J. A. D. Puerto-Flores, Lennin C. Yllescas-Calderon, R. Parra-Michel, F. Peña-Campos, J. Cortez","doi":"10.1109/LATINCOM.2018.8613202","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613202","url":null,"abstract":"Vehicle-to-vehicle (V2V)doubly-dispersive channels cause loss of orthogonality in multi-carrier systems, resulting in inter-carrier interference (ICI). In order to suppress ICI in orthogonal frequency division multiplexing (OFDM)systems, the techniques of forward error correction (FEC)and nonlinear detection of data are usually employed, requiring low coding rates and high decoding computational complexity. In this paper, different configurations for reception of OFDM signals with frequency dispersion, discrete Fourier transform-spread-OFDM (DFTS-OFDM)are explored including FEC techniques and linear/nonlinear detection. The results show that the use of turbo encoding and non-linear detection of ordered successive interference cancellation (OSIC)in the DFTS-OFDM system offers significant gains in terms of performance when compared to conventional OFDM receivers, obtaining a performance in terms of bit error rate (BER)of 10−4 with a signal-to-noise ratio (SNR)close to 7 dB over doubly selective channel with 1 kHz Doppler spread. The results found can be applied in the design of communication systems with high mobility.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"388 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126737777","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
An In-Depth Analysis of the Last Twenty Years About IPv6 Security 近二十年对IPv6安全的深入分析
2018 IEEE 10th Latin-American Conference on Communications (LATINCOM) Pub Date : 2018-11-01 DOI: 10.1109/LATINCOM.2018.8613223
L. Almeida, Pedro Carvalho, Camilla Jacome, Michael A. F. Monteiro, Miguel R. B. Cabral
{"title":"An In-Depth Analysis of the Last Twenty Years About IPv6 Security","authors":"L. Almeida, Pedro Carvalho, Camilla Jacome, Michael A. F. Monteiro, Miguel R. B. Cabral","doi":"10.1109/LATINCOM.2018.8613223","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613223","url":null,"abstract":"The IPv6 protocol was designed to be the successor to IPv4, bringing mainly improvements to address space and security aspects. Conducting a study that is capable of analyzing the state-of-the-art of security aspects related to IPv6 is important to understand the direction of research and the gaps still existing in the area. This paper aims to present an in-depth analysis of the published studies on IPv6 security in the last twenty years. Research questions were created in order to obtain answers that help in understanding the area. A systematic mapping study was carried out, in which it was possible to relate aspects related to the security of the IPv6 protocol.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123733114","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
Optimal Sparse Channel Estimation for Unknown Sparse Level in Wireless OFDM Systems 无线OFDM系统中未知稀疏电平的最优稀疏信道估计
2018 IEEE 10th Latin-American Conference on Communications (LATINCOM) Pub Date : 2018-11-01 DOI: 10.1109/LATINCOM.2018.8613215
J. Vera-Gonzalez, A. Prieto-Guerrero, M. Ghogho, D. Licea
{"title":"Optimal Sparse Channel Estimation for Unknown Sparse Level in Wireless OFDM Systems","authors":"J. Vera-Gonzalez, A. Prieto-Guerrero, M. Ghogho, D. Licea","doi":"10.1109/LATINCOM.2018.8613215","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613215","url":null,"abstract":"Compressed sensing (CS)has been rapidly adopted as an improved solution to estimate sparse channels for OFDM systems. Nowadays, there exist many algorithms to estimate the channel under this approach. The most popular algorithms belong to the greedy algorithms category. OMP is one of the most useful algorithms due its low computational complexity and good performance. However, the accuracy in this algorithm depends directly on the stopping condition. Currently, there exist many works which try to tackle this problem developing a stopping condition by a threshold. On the other hand, some others works assume this condition known, however in a real scenario it is not true. In this work a simple strategy is proposed permitting to detect the sparse level of the wireless channel and apply it to obtain an optimal solution reducing the MSE in the OFDM channel estimation.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131687512","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 Review of Indoor Channel Modeling Techniques for Visible Light Communications 可见光通信室内信道建模技术综述
2018 IEEE 10th Latin-American Conference on Communications (LATINCOM) Pub Date : 2018-11-01 DOI: 10.1109/LATINCOM.2018.8613205
A. M. Ramirez-Aguilera, J. M. Luna-Rivera, V. Guerra, J. Rabadán, R. P. Jiménez, F. J. López-Hernández
{"title":"A Review of Indoor Channel Modeling Techniques for Visible Light Communications","authors":"A. M. Ramirez-Aguilera, J. M. Luna-Rivera, V. Guerra, J. Rabadán, R. P. Jiménez, F. J. López-Hernández","doi":"10.1109/LATINCOM.2018.8613205","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613205","url":null,"abstract":"Visible light communications (VLC)is a technology that uses the unregulated electromagnetic spectrum band between 380 and 780nm which offers an enormous potential of high speed communications for short distances, regardless of radio interference. VLC technology has many useful applications, including smart lighting, high speed data link, communication in hazardous environments, vehicular communications, underwater communications, location based services, etc. Although there is a growing interest on VLC applications, there is still a lack of proper VLC channel models. In this paper, we present a comprehensive survey of modeling techniques for visible light communications with a focus on indoor wireless optical channels. For a better understanding, we select some relevant channel models and compare their characteristics from different aspects.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131356499","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
Convolutional Neural Networks for Semantic Segmentation of Multispectral Remote Sensing Images 基于卷积神经网络的多光谱遥感图像语义分割
2018 IEEE 10th Latin-American Conference on Communications (LATINCOM) Pub Date : 2018-11-01 DOI: 10.1109/LATINCOM.2018.8613216
Josué López, Stewart René Santos Arce, C. Atzberger, Deni Torres
{"title":"Convolutional Neural Networks for Semantic Segmentation of Multispectral Remote Sensing Images","authors":"Josué López, Stewart René Santos Arce, C. Atzberger, Deni Torres","doi":"10.1109/LATINCOM.2018.8613216","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613216","url":null,"abstract":"The recent impulse in development of artificial intelligence (AI) methodologies has simplified the application of this in multiple research areas. This simplification was not favorable before, due to the limitations in dimensionality, processing time, computational resources, among others. Working with multispectral remote sensing (RS) images, in an artificial neural network (NN) was quite complex. Due the methods used required millions of processes that took a long time to be executed and produce competitive results compared with the state of the art (SoA). Deep learning (DL) strategies have been applied to alleviate these limitations and have greatly improved the use of neural networks. Therefore, this paper presents the analysis of DL-NNs to perform semantic segmentation of multispectral RS images. Images are captured by the constellation of satellites Sentinel-2 from the European Space Agency. The objective of this research is to classify each pixel of a scene into five categories: 1-vegetation, 2-soil, 3-water, 4-clouds and 5-cloud shadows. The selection of spectral bands for the formation of input datasets for segmentation of these classes is very important. The spectral signatures of each material aid to discern among several classes. Results presented in this work, show that the AI strategy proposed offer better accuracy segmentation than other methods of the SoA in competitive processing time.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114118376","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
Pel Decimation Architecture for Motion Detection on Predictive Video Coding 预测视频编码中运动检测的抽取结构
2018 IEEE 10th Latin-American Conference on Communications (LATINCOM) Pub Date : 2018-11-01 DOI: 10.1109/LATINCOM.2018.8613221
J. M. Ruiz-Hernandez, J. L. Tecpanecatl-Xihuitl, R. Aguilar-Ponce
{"title":"Pel Decimation Architecture for Motion Detection on Predictive Video Coding","authors":"J. M. Ruiz-Hernandez, J. L. Tecpanecatl-Xihuitl, R. Aguilar-Ponce","doi":"10.1109/LATINCOM.2018.8613221","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613221","url":null,"abstract":"The demand of video applications in mobile devices has grown in the last decade. However, video applications are computationally demanding tasks that can drain device battery. Since, battery capacity has not evolved at the same rate as digital electronics, is necessary to work into achieve the same tasks with less complex algorithms. The most demanding task within the video coding process is Motion Estimation and Compensation (ME/MC). Therefore, the present work aims the reduction of calls to the ME/MC procedure by introducing a power-aware scheme using approximate computing. The call reduction is achieve by introducing a simple motion detection algorithm in combination with a pel decimation technique. The reduction in calls achieves a cutback in power consumption as well as a speed-up in the coding process. The average power reduction is 91.60% while the average speed-up is 65.89% in MPEG-4. While our proposed scheme in H.264/AVC achieves an average power reduction of 93.55% and an average speed-up of 89.15%.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133221289","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
Alternative Viterbi Detection Metrics for GFSK Receivers: A Hardware Reduction Approach GFSK接收机的替代Viterbi检测指标:硬件缩减方法
2018 IEEE 10th Latin-American Conference on Communications (LATINCOM) Pub Date : 2018-11-01 DOI: 10.1109/LATINCOM.2018.8613225
Jose Valencia-Velasco, R. Aldana-López, O. Longoria-Gandara
{"title":"Alternative Viterbi Detection Metrics for GFSK Receivers: A Hardware Reduction Approach","authors":"Jose Valencia-Velasco, R. Aldana-López, O. Longoria-Gandara","doi":"10.1109/LATINCOM.2018.8613225","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613225","url":null,"abstract":"Gaussian frequency shift keying (GFSK)is a digital modulation scheme with both attractive spectra and high power efficiencies. Modulation schemes with these characteristics often require a maximum likelihood sequence estimator (MLSE)implemented by means of Viterbi Algorithm (VA). The main drawback of VA is complexity implementation due to the filter bank needed to calculate the metrics, the large number of states required to describe the signal and the employment of squaring and multinpication operations in calculating metric cost. This paper discusses alternative metrics for VA in GFSK schemes that avoids the use of multiplication and squaring operations, achieving a reduction in implementation complexity. Moreover, the tradeoff between complexity and performance (in terms of bit error rate, BER)for the proposed metrics is shown under additive white Gaussian noise (AWGN).","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124888691","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
Half-Precision Floating-Point Multiplier IP Core Based on 130 Nm CMOS ASIC Technology 基于130nm CMOS ASIC技术的半精度浮点乘法器IP核
2018 IEEE 10th Latin-American Conference on Communications (LATINCOM) Pub Date : 2018-11-01 DOI: 10.1109/LATINCOM.2018.8613231
Cuauhtémoc R. Aguilera-Galicia, Omar Lonuoria-Gandara, L. Pizano-Escalante
{"title":"Half-Precision Floating-Point Multiplier IP Core Based on 130 Nm CMOS ASIC Technology","authors":"Cuauhtémoc R. Aguilera-Galicia, Omar Lonuoria-Gandara, L. Pizano-Escalante","doi":"10.1109/LATINCOM.2018.8613231","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613231","url":null,"abstract":"Internet of things applications demand reusable modular designs with low-power consumption. Furthermore, many emerging applications, such as image recognition using machine learning, are low-accuracy tolerant. For these applications, the IEEE-754 half-precision arithmetic is becoming a relevant option for low-power, low-computational cost designs. This article presents a half-precision floating-point multiplier. It is implemented on 130 nm CMOS ASIC technology. The proposed multiplier IP core exhibits low-power consumption, small silicon area, and its accuracy is IEEE-754 compliant.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122575880","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
Optimal Design of an Axially Displaced Ellipse Antenna 轴向位移椭圆天线的优化设计
2018 IEEE 10th Latin-American Conference on Communications (LATINCOM) Pub Date : 2018-11-01 DOI: 10.1109/LATINCOM.2018.8613248
Myriam Tipan, G. Arévalo, B. Galocha-Iragüen
{"title":"Optimal Design of an Axially Displaced Ellipse Antenna","authors":"Myriam Tipan, G. Arévalo, B. Galocha-Iragüen","doi":"10.1109/LATINCOM.2018.8613248","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613248","url":null,"abstract":"Reflectors antennas in Ku band are primarily used for satellite communications. They are mainly employed for establishing the communications for data transmission. In this paper, a displaced axis dual reflector antenna, usually referred as Axially Displaced Ellipse (ADE)antenna, is presented, demonstrating its advantages compared to the classical dual reflector antennas. Results show that the design antenna meets the expectations for SATCOM communications.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123243606","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
A Framework for the Parallelization of Optical Communication Algorithms on SoC-FPGA Using HLS 基于HLS的SoC-FPGA光通信算法并行化框架
2018 IEEE 10th Latin-American Conference on Communications (LATINCOM) Pub Date : 2018-11-01 DOI: 10.1109/LATINCOM.2018.8613210
D. Márquez-Viloria, N. G. González, Cristian Alzate-Anzola
{"title":"A Framework for the Parallelization of Optical Communication Algorithms on SoC-FPGA Using HLS","authors":"D. Márquez-Viloria, N. G. González, Cristian Alzate-Anzola","doi":"10.1109/LATINCOM.2018.8613210","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613210","url":null,"abstract":"This work presents a framework for the parallelization of optical communication algorithms on Xilinx FPGAs. The proposed framework uses Matlab, Vivado HLS, and PetaLinux OS for the design, parallelization, implementation, and verification of the algorithms. This framework enables the tests for multiple variations of the architecture on the different FPGAs families, allowing to explore several parallelization directives, such as pipeline, unrolling, partitioning, and mixed techniques. This approach opens a novel alternative in the parallelization of the optical communication algorithms on FPGA including low-cost families.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128449944","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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