Pub Date : 2017-11-01DOI: 10.1109/LATINCOM.2017.8240196
Erick Petersen, Marco Antonio To, S. Maag
In recent years the use of wireless ad hoc networks has seen an increase of applications. A big part of the research has focused on Mobile Ad Hoc Networks (MAnETs), due to its implementations in vehicular networks, battlefield communications, among others. These peer-to-peer networks usually test novel communications protocols, but leave out the network security part. A wide range of attacks can happen as in wired networks, some of them being more damaging in MANETs. Because of the characteristics of these networks, conventional methods for detection of attack traffic are ineffective. Intrusion Detection Systems (IDSs) are constructed on various detection techniques, but one of the most important is anomaly detection. IDSs based only in past attacks signatures are less effective, even more if these IDSs are centralized. Our work focuses on adding a novel Machine Learning technique to the detection engine, which recognizes attack traffic in an online way (not to store and analyze after), re-writing IDS rules on the fly. Experiments were done using the Dockemu emulation tool with Linux Containers, IPv6 and OLSR as routing protocol, leading to promising results.
{"title":"A novel online CEP learning engine for MANET IDS","authors":"Erick Petersen, Marco Antonio To, S. Maag","doi":"10.1109/LATINCOM.2017.8240196","DOIUrl":"https://doi.org/10.1109/LATINCOM.2017.8240196","url":null,"abstract":"In recent years the use of wireless ad hoc networks has seen an increase of applications. A big part of the research has focused on Mobile Ad Hoc Networks (MAnETs), due to its implementations in vehicular networks, battlefield communications, among others. These peer-to-peer networks usually test novel communications protocols, but leave out the network security part. A wide range of attacks can happen as in wired networks, some of them being more damaging in MANETs. Because of the characteristics of these networks, conventional methods for detection of attack traffic are ineffective. Intrusion Detection Systems (IDSs) are constructed on various detection techniques, but one of the most important is anomaly detection. IDSs based only in past attacks signatures are less effective, even more if these IDSs are centralized. Our work focuses on adding a novel Machine Learning technique to the detection engine, which recognizes attack traffic in an online way (not to store and analyze after), re-writing IDS rules on the fly. Experiments were done using the Dockemu emulation tool with Linux Containers, IPv6 and OLSR as routing protocol, leading to promising results.","PeriodicalId":190644,"journal":{"name":"2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)","volume":"379 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123445835","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}
Pub Date : 2017-11-01DOI: 10.1109/LATINCOM.2017.8240168
B. Granda, L. A. Belduma, Edwin J. Coronel Gonzalez, Angel F. Soto Sarango
This project will present a wireless sensors network. Each sensor node measures noise and CO2 pollution levels inside a specific urban area and a coordinator node stores these measurements in a database made with Java. Finally the obtained results are presented.
{"title":"Designing a wireless sensor network for vehicular traffic and CO2 pollution monitoring in an urban area","authors":"B. Granda, L. A. Belduma, Edwin J. Coronel Gonzalez, Angel F. Soto Sarango","doi":"10.1109/LATINCOM.2017.8240168","DOIUrl":"https://doi.org/10.1109/LATINCOM.2017.8240168","url":null,"abstract":"This project will present a wireless sensors network. Each sensor node measures noise and CO2 pollution levels inside a specific urban area and a coordinator node stores these measurements in a database made with Java. Finally the obtained results are presented.","PeriodicalId":190644,"journal":{"name":"2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131554276","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}
Pub Date : 2017-11-01DOI: 10.1109/LATINCOM.2017.8240153
Gourab Maiti, B. Shankar, T. N. Kumar, Pradeep Goutam, S. Prasad, M. Soundarakumar
This paper demonstrates an innovative variable fractional rate Digital Down Converter(DDC) architecture for satellite communication where the carrier frequency and output sample rate can be changed dynamically at run time. The proposed algorithm is highly modular and generic so that the DDC can decimate by any fractional ratio i.e. the ADC sampling rate may be any integer or non-integer multiple of output sample rate from DDC. The algorithm is verified by evaluating the bit error rate(BER) performance of Binary Phase Shift Keying(BPSK) modulation with theoretical BER in the presence of additive white Gaussian noise (AWGN) in Matlab. Xilinx FPGA (Kintex-7) realizes the novel DDC hardware along with the demodulator implemented in DSP processor which performs timing synchronization, frequency offset estimation and correction. Though the primary use of the design is in satellite communication, the same applies to other multi-standard radio based communication like GSM, CDMA, WCDMA, WiMAX, LTE.
{"title":"Variable fractional rate digital down converter for satellite communication","authors":"Gourab Maiti, B. Shankar, T. N. Kumar, Pradeep Goutam, S. Prasad, M. Soundarakumar","doi":"10.1109/LATINCOM.2017.8240153","DOIUrl":"https://doi.org/10.1109/LATINCOM.2017.8240153","url":null,"abstract":"This paper demonstrates an innovative variable fractional rate Digital Down Converter(DDC) architecture for satellite communication where the carrier frequency and output sample rate can be changed dynamically at run time. The proposed algorithm is highly modular and generic so that the DDC can decimate by any fractional ratio i.e. the ADC sampling rate may be any integer or non-integer multiple of output sample rate from DDC. The algorithm is verified by evaluating the bit error rate(BER) performance of Binary Phase Shift Keying(BPSK) modulation with theoretical BER in the presence of additive white Gaussian noise (AWGN) in Matlab. Xilinx FPGA (Kintex-7) realizes the novel DDC hardware along with the demodulator implemented in DSP processor which performs timing synchronization, frequency offset estimation and correction. Though the primary use of the design is in satellite communication, the same applies to other multi-standard radio based communication like GSM, CDMA, WCDMA, WiMAX, LTE.","PeriodicalId":190644,"journal":{"name":"2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130090305","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}
Pub Date : 2017-11-01DOI: 10.1109/LATINCOM.2017.8240175
Helder Oliveira, N. Fonseca
The introduction of Space division multiplexing (SDM) in optical networks brings new challenges for protection of networks since a lightpath can span multiple cores. In this paper, we investigate the problem of dynamic protection against two simultaneous failures in spacial division multiplexing elastic optical networks. For that, we propose a new path-protection sharing spectrum and straddling p-cycle FIPP algorithm called Sharing Slot and Straddling p-Cycle FIPP (SSSPF). In SSSPF, each connection is assigned one primary path and one link-disjoint backup path. SSSPF is the first algorithm in literature, to provide protection against two simultaneous failure in SDM elastic optical network.
{"title":"Sharing spectrum and straddling p-cycle FIPP for protection against two simultaneous failures in SDM elastic optical networks","authors":"Helder Oliveira, N. Fonseca","doi":"10.1109/LATINCOM.2017.8240175","DOIUrl":"https://doi.org/10.1109/LATINCOM.2017.8240175","url":null,"abstract":"The introduction of Space division multiplexing (SDM) in optical networks brings new challenges for protection of networks since a lightpath can span multiple cores. In this paper, we investigate the problem of dynamic protection against two simultaneous failures in spacial division multiplexing elastic optical networks. For that, we propose a new path-protection sharing spectrum and straddling p-cycle FIPP algorithm called Sharing Slot and Straddling p-Cycle FIPP (SSSPF). In SSSPF, each connection is assigned one primary path and one link-disjoint backup path. SSSPF is the first algorithm in literature, to provide protection against two simultaneous failure in SDM elastic optical network.","PeriodicalId":190644,"journal":{"name":"2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115258675","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}
Pub Date : 2017-11-01DOI: 10.1109/LATINCOM.2017.8240161
Talles Quintao Pessoa, Fatima de L. P. Duarte-Figueiredo
The trend towards the digitalization of our homes is motivated by the development of hardware and software platforms that have been researched in recent years. As in the Internet of Things, building a single, global platform that enables communication with a myriad of devices for home automation is virtually impossible. The platform proposed in this work deals, in isolation, with the problems in each stage of residential automation systems' information generation process, making data from different sources compatible and available in a web application through a gateway. In addition to addressing interoperability issues, an SDN-based firewall applies access control rules to objects that are part of the automated network. Real experiments were carried out to validate the NodePI platform.
{"title":"NodePI : An integrated platform for smart homes","authors":"Talles Quintao Pessoa, Fatima de L. P. Duarte-Figueiredo","doi":"10.1109/LATINCOM.2017.8240161","DOIUrl":"https://doi.org/10.1109/LATINCOM.2017.8240161","url":null,"abstract":"The trend towards the digitalization of our homes is motivated by the development of hardware and software platforms that have been researched in recent years. As in the Internet of Things, building a single, global platform that enables communication with a myriad of devices for home automation is virtually impossible. The platform proposed in this work deals, in isolation, with the problems in each stage of residential automation systems' information generation process, making data from different sources compatible and available in a web application through a gateway. In addition to addressing interoperability issues, an SDN-based firewall applies access control rules to objects that are part of the automated network. Real experiments were carried out to validate the NodePI platform.","PeriodicalId":190644,"journal":{"name":"2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)","volume":"889 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130746977","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}
Pub Date : 2017-11-01DOI: 10.1109/LATINCOM.2017.8240165
J. B. Ferreira, Á. Salles, G. Bulla, E. Rhod
In this paper, we have proposed a novel passive ultra high frequency (UHF) radio frequency identification (RFID) metal tag antenna mountable on the metallic surface to resonate at 930 MHz. The techniques with double slits for impedance matching and reading distance enhancement is used to obtain a good performance. All simulations are carried out by Ansoft HFSS software and Intermec read verifies the measured results. The dimensions of the proposed antenna are around 46 × 28 mm. The Monza R6 chip tag with read sensitivity of up to −20 dBm was used. Good performances such as reasonable reading distance has been observed. The proposed antenna provides a valuable reference for the RFID tag antenna design mounted on metal surface, and it can be widely used in UHF RFID systems.
{"title":"A new structure of UHF RFID tag antenna mountable on metallic surface using double slits","authors":"J. B. Ferreira, Á. Salles, G. Bulla, E. Rhod","doi":"10.1109/LATINCOM.2017.8240165","DOIUrl":"https://doi.org/10.1109/LATINCOM.2017.8240165","url":null,"abstract":"In this paper, we have proposed a novel passive ultra high frequency (UHF) radio frequency identification (RFID) metal tag antenna mountable on the metallic surface to resonate at 930 MHz. The techniques with double slits for impedance matching and reading distance enhancement is used to obtain a good performance. All simulations are carried out by Ansoft HFSS software and Intermec read verifies the measured results. The dimensions of the proposed antenna are around 46 × 28 mm. The Monza R6 chip tag with read sensitivity of up to −20 dBm was used. Good performances such as reasonable reading distance has been observed. The proposed antenna provides a valuable reference for the RFID tag antenna design mounted on metal surface, and it can be widely used in UHF RFID systems.","PeriodicalId":190644,"journal":{"name":"2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131089132","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}
Pub Date : 2017-11-01DOI: 10.1109/LATINCOM.2017.8240181
Juan Montoya, Natalia Gaviria Gómez
This paper presents the problem of optimizing Radio Access Technology (RAT) selection and traffic offloading in a Multi RAT Heterogeneous Network composed by cellular and WiFi networks. The main idea is to distribute the traffic load of the system over the available access networks, while making an efficient use of the radio resources in the long-term. In this sense, a higher and fair WiFi resource utilization is pursued in comparison to cellular network usage. The goal is to avoid an overloaded cellular network scenario and to obtain a decrease in the energy consumption. The problem is modeled as a sequential decision-making process using Semi Markovian Decision Process, where the optimization problem aims at maximizing the total long-term discounted-reward of the network. Value Iteration algorithm is then used to solve the maximization problem and to obtain the optimal policy. From the resulting policy, several performance metrics are derived to evaluate its performance. Numerical results indicate that the proposed RAT selection strategy performs well for distributing the traffic load in a fair manner among WiFi networks while a lower cellular utilization is achieved.
{"title":"Optimal RAT selection and WiFi offloading in multi RAT HetNet with user-centric deployments","authors":"Juan Montoya, Natalia Gaviria Gómez","doi":"10.1109/LATINCOM.2017.8240181","DOIUrl":"https://doi.org/10.1109/LATINCOM.2017.8240181","url":null,"abstract":"This paper presents the problem of optimizing Radio Access Technology (RAT) selection and traffic offloading in a Multi RAT Heterogeneous Network composed by cellular and WiFi networks. The main idea is to distribute the traffic load of the system over the available access networks, while making an efficient use of the radio resources in the long-term. In this sense, a higher and fair WiFi resource utilization is pursued in comparison to cellular network usage. The goal is to avoid an overloaded cellular network scenario and to obtain a decrease in the energy consumption. The problem is modeled as a sequential decision-making process using Semi Markovian Decision Process, where the optimization problem aims at maximizing the total long-term discounted-reward of the network. Value Iteration algorithm is then used to solve the maximization problem and to obtain the optimal policy. From the resulting policy, several performance metrics are derived to evaluate its performance. Numerical results indicate that the proposed RAT selection strategy performs well for distributing the traffic load in a fair manner among WiFi networks while a lower cellular utilization is achieved.","PeriodicalId":190644,"journal":{"name":"2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123163267","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}
Pub Date : 2017-11-01DOI: 10.1109/LATINCOM.2017.8240171
Milton N. Tipan, Javier Cáceres, Mariela N. Jimenez, I. Cano, G. Arévalo
We compare three clipping techniques for reducing the PAPR of an UFMC signal over an AWGN channel. First, the techniques are analyzed probabilistically showing that deep clipping reduces the most, but it also has the worst performance. Then, the percentile levels of deep factor and level clipping are optimized, achieving similar performance that common techniques.
{"title":"Comparison of clipping techniques for PAPR reduction in UFMC systems","authors":"Milton N. Tipan, Javier Cáceres, Mariela N. Jimenez, I. Cano, G. Arévalo","doi":"10.1109/LATINCOM.2017.8240171","DOIUrl":"https://doi.org/10.1109/LATINCOM.2017.8240171","url":null,"abstract":"We compare three clipping techniques for reducing the PAPR of an UFMC signal over an AWGN channel. First, the techniques are analyzed probabilistically showing that deep clipping reduces the most, but it also has the worst performance. Then, the percentile levels of deep factor and level clipping are optimized, achieving similar performance that common techniques.","PeriodicalId":190644,"journal":{"name":"2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)","volume":"65 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126409736","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}
Pub Date : 2017-11-01DOI: 10.1109/LATINCOM.2017.8240182
Joaquín Cortez González, M. Bazdresch, O. Longoria-Gandara
In a MIMO wireless communications system, a space-time block code specifies how the data symbols are transmitted over different antennas at different time instants. A hybrid space-time code attempts to obtain some of the available diversity and multiplexing gains, achieving low error probability and high data rate. The LD StBc-VBLAST hybrid code layers one spatial-multiplexing antenna (to increase the data rate) and one Alamouti encoder (to provide diversity). A low-complexity, nearly optimum decoder algorithm for LD STBC-VBLAST is presented. Its error probability is comparable to that of a maximum-likelihood detector, with much lower computational complexity. The performance of the detector is evaluated over both uncorrelated and correlated channels. It is shown that the proposed decoder remains nearly optimum despite channel correlation.
{"title":"A low-complexity near-ML detector for a 3 × nR hybrid space-time code","authors":"Joaquín Cortez González, M. Bazdresch, O. Longoria-Gandara","doi":"10.1109/LATINCOM.2017.8240182","DOIUrl":"https://doi.org/10.1109/LATINCOM.2017.8240182","url":null,"abstract":"In a MIMO wireless communications system, a space-time block code specifies how the data symbols are transmitted over different antennas at different time instants. A hybrid space-time code attempts to obtain some of the available diversity and multiplexing gains, achieving low error probability and high data rate. The LD StBc-VBLAST hybrid code layers one spatial-multiplexing antenna (to increase the data rate) and one Alamouti encoder (to provide diversity). A low-complexity, nearly optimum decoder algorithm for LD STBC-VBLAST is presented. Its error probability is comparable to that of a maximum-likelihood detector, with much lower computational complexity. The performance of the detector is evaluated over both uncorrelated and correlated channels. It is shown that the proposed decoder remains nearly optimum despite channel correlation.","PeriodicalId":190644,"journal":{"name":"2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133916242","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}
Pub Date : 2017-11-01DOI: 10.1109/LATINCOM.2017.8240178
Monira A. Goncalves, Rafael V. Louredo, M. Tcheou, LISANDRO LOVISOLO
In this work, we present an acoustic modem system that transmits data using multicarrier modulation through the air interface. The choice for this type of modulation over single carrier modulation arises from the need for an efficient use of the limited bandwidth, the minimization of multipath effects as frequency fading. The system transmits data using sound waves resting on the output and input audio channel embedded in several devices. It employs the BPSK and QPSK digital modulations with an OFDM system, coherent detection and Least Sqares channel estimator from OFDM pilots.
{"title":"Acoustic modem using OFDM and least-square channel estimation","authors":"Monira A. Goncalves, Rafael V. Louredo, M. Tcheou, LISANDRO LOVISOLO","doi":"10.1109/LATINCOM.2017.8240178","DOIUrl":"https://doi.org/10.1109/LATINCOM.2017.8240178","url":null,"abstract":"In this work, we present an acoustic modem system that transmits data using multicarrier modulation through the air interface. The choice for this type of modulation over single carrier modulation arises from the need for an efficient use of the limited bandwidth, the minimization of multipath effects as frequency fading. The system transmits data using sound waves resting on the output and input audio channel embedded in several devices. It employs the BPSK and QPSK digital modulations with an OFDM system, coherent detection and Least Sqares channel estimator from OFDM pilots.","PeriodicalId":190644,"journal":{"name":"2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130517039","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}
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