Pub Date : 2019-10-01DOI: 10.1109/TELECOM48729.2019.8994892
S. Sadinov, K. Angelov, P. Kogias, M. Malamatoudis
The MIMO communication channel plays an important role in determining system performance. In its determination, the channel coding and signal processing must be taken into account. Many approaches are known for modeling MIMO channels. This paper is focus on modelling that use the spatial-temporal properties of the MIMO channel for an indoor environment as an example. This report also takes into account the electromagnetic propagation of the signals and parameters of the antennas used to characterize the MIMO channel.
{"title":"Approach for MIMO Wireless Channel Modelling and System Characterization for an Indoor Environment","authors":"S. Sadinov, K. Angelov, P. Kogias, M. Malamatoudis","doi":"10.1109/TELECOM48729.2019.8994892","DOIUrl":"https://doi.org/10.1109/TELECOM48729.2019.8994892","url":null,"abstract":"The MIMO communication channel plays an important role in determining system performance. In its determination, the channel coding and signal processing must be taken into account. Many approaches are known for modeling MIMO channels. This paper is focus on modelling that use the spatial-temporal properties of the MIMO channel for an indoor environment as an example. This report also takes into account the electromagnetic propagation of the signals and parameters of the antennas used to characterize the MIMO channel.","PeriodicalId":127549,"journal":{"name":"2019 27th National Conference with International Participation (TELECOM)","volume":"24 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127646700","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 : 2019-10-01DOI: 10.1109/TELECOM48729.2019.8994876
G. Cherneva
In this work is proposed an approach for the synthesis of impacts, which is increased the amplitude of the deviation of the phase trajectory of the points of balance until the chaotic mode. The idea to obtaining needed chaotic attractor is applied to the chaotic generators, described by the equations of Lorenz, in Chaos Shift Keying communication system. The described approach is simulated and numerical studied by Mathcad.
{"title":"Control of the Chaotic Processes in Chaos Shift Keying Communication System","authors":"G. Cherneva","doi":"10.1109/TELECOM48729.2019.8994876","DOIUrl":"https://doi.org/10.1109/TELECOM48729.2019.8994876","url":null,"abstract":"In this work is proposed an approach for the synthesis of impacts, which is increased the amplitude of the deviation of the phase trajectory of the points of balance until the chaotic mode. The idea to obtaining needed chaotic attractor is applied to the chaotic generators, described by the equations of Lorenz, in Chaos Shift Keying communication system. The described approach is simulated and numerical studied by Mathcad.","PeriodicalId":127549,"journal":{"name":"2019 27th National Conference with International Participation (TELECOM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121856544","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 : 2019-10-01DOI: 10.1109/TELECOM48729.2019.8994881
Seferin Mirtchev
The single-server Pareto/M/1/k teletraffic system is with a peaked arrival process described by the generalized Pareto distribution, exponentially distributed service time and a final queue length. A model by real time simulation for analysis the state probabilities, the losses and the delays is developed for investigating this queueing system. The results are compared with the classical system M/M/1/k. This simulation model allows studying the stochastic processes in modern telecommunications networks and system.
{"title":"Investigation of Pareto/M/1/k Teletraffic System by Simulation","authors":"Seferin Mirtchev","doi":"10.1109/TELECOM48729.2019.8994881","DOIUrl":"https://doi.org/10.1109/TELECOM48729.2019.8994881","url":null,"abstract":"The single-server Pareto/M/1/k teletraffic system is with a peaked arrival process described by the generalized Pareto distribution, exponentially distributed service time and a final queue length. A model by real time simulation for analysis the state probabilities, the losses and the delays is developed for investigating this queueing system. The results are compared with the classical system M/M/1/k. This simulation model allows studying the stochastic processes in modern telecommunications networks and system.","PeriodicalId":127549,"journal":{"name":"2019 27th National Conference with International Participation (TELECOM)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129367195","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 : 2019-10-01DOI: 10.1109/TELECOM48729.2019.8994886
R. Miletiev, E. Iontchev, R. Yordanov
The current paper represent IoT indoor measurement system for real time monitoring of the particulate matter such as PM1.0, PM2.5 and PM10. Also the environment parameters such as temperature and humidity is accomplished. The operational stability and long term performance are measured and analyzed. The measurement system send the data to the remote server when the particulate matter levels are calculated on 24h base and compared to the national standards. The system also allows Bluetooth connectivity to nearby receivers such as mobile phones to show the real-time PM levels.
{"title":"Indoor particulate matter (PM) monitoring and analysis","authors":"R. Miletiev, E. Iontchev, R. Yordanov","doi":"10.1109/TELECOM48729.2019.8994886","DOIUrl":"https://doi.org/10.1109/TELECOM48729.2019.8994886","url":null,"abstract":"The current paper represent IoT indoor measurement system for real time monitoring of the particulate matter such as PM1.0, PM2.5 and PM10. Also the environment parameters such as temperature and humidity is accomplished. The operational stability and long term performance are measured and analyzed. The measurement system send the data to the remote server when the particulate matter levels are calculated on 24h base and compared to the national standards. The system also allows Bluetooth connectivity to nearby receivers such as mobile phones to show the real-time PM levels.","PeriodicalId":127549,"journal":{"name":"2019 27th National Conference with International Participation (TELECOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129151382","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 : 2019-10-01DOI: 10.1109/TELECOM48729.2019.8994893
Jordan Raychev, Diyana Kinaneva, Georgi V. Hristov, P. Zahariev
Switch to multi controller migration is still a hot topic in SDN research field which requires a lot of factors to be considered. Among those factors is SDN controller scalability, migration stability and load balancing rate across all controllers. The focus of the paper is to present a new approach for optimizing SDN control plane scalability and controllers load balancing rate through efficient switch to controller migration by using self-balancing binary search trees.
{"title":"Optimizing SDN Control Plane Scalability by Efficient Switch to Controller Migration","authors":"Jordan Raychev, Diyana Kinaneva, Georgi V. Hristov, P. Zahariev","doi":"10.1109/TELECOM48729.2019.8994893","DOIUrl":"https://doi.org/10.1109/TELECOM48729.2019.8994893","url":null,"abstract":"Switch to multi controller migration is still a hot topic in SDN research field which requires a lot of factors to be considered. Among those factors is SDN controller scalability, migration stability and load balancing rate across all controllers. The focus of the paper is to present a new approach for optimizing SDN control plane scalability and controllers load balancing rate through efficient switch to controller migration by using self-balancing binary search trees.","PeriodicalId":127549,"journal":{"name":"2019 27th National Conference with International Participation (TELECOM)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125194687","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 : 2019-10-01DOI: 10.1109/TELECOM48729.2019.8994889
R. Beniwal, K. Nikolova, G. Iliev
Energy efficient routing is an important issue in resource constrained Internet of Things (IoT) networks due to limited energy of the sensor nodes. In this paper an approach for routing in MMSPEED protocol considering the residual energy has been proposed resulting in energy efficient paths for real time traffic. Simulation results show that efficiency concerning power consumption of the sensor nodes is improved and overall lifetime of the wireless sensor network is also increased.
{"title":"Energy Efficient Routing Protocols in Resource Constrained IoT Networks","authors":"R. Beniwal, K. Nikolova, G. Iliev","doi":"10.1109/TELECOM48729.2019.8994889","DOIUrl":"https://doi.org/10.1109/TELECOM48729.2019.8994889","url":null,"abstract":"Energy efficient routing is an important issue in resource constrained Internet of Things (IoT) networks due to limited energy of the sensor nodes. In this paper an approach for routing in MMSPEED protocol considering the residual energy has been proposed resulting in energy efficient paths for real time traffic. Simulation results show that efficiency concerning power consumption of the sensor nodes is improved and overall lifetime of the wireless sensor network is also increased.","PeriodicalId":127549,"journal":{"name":"2019 27th National Conference with International Participation (TELECOM)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114871759","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 : 2019-10-01DOI: 10.1109/TELECOM48729.2019.8994885
D. Makoveenko, S. Siden, V. Pyliavskyi, R. Fokin
A computer model for investigating the interference environment in the 4G LTE (E-UTRA) network has been made. The results of modulation of uplink (UL) noise over the use of sectoral antennas of base stations are presented. The technology of power control is used to reduce noise. Recommendations on the use of adaptive antenna array technology to reduce interference in the E-UTRA network are provided.
{"title":"Use of Adaptive Antenna Arrays to Reduce Interference in the E-UTRA Network","authors":"D. Makoveenko, S. Siden, V. Pyliavskyi, R. Fokin","doi":"10.1109/TELECOM48729.2019.8994885","DOIUrl":"https://doi.org/10.1109/TELECOM48729.2019.8994885","url":null,"abstract":"A computer model for investigating the interference environment in the 4G LTE (E-UTRA) network has been made. The results of modulation of uplink (UL) noise over the use of sectoral antennas of base stations are presented. The technology of power control is used to reduce noise. Recommendations on the use of adaptive antenna array technology to reduce interference in the E-UTRA network are provided.","PeriodicalId":127549,"journal":{"name":"2019 27th National Conference with International Participation (TELECOM)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123778684","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 : 2019-10-01DOI: 10.1109/TELECOM48729.2019.8994894
K. Angelov, S. Sadinov
The security of a communication system is the system’s ability to resist the external destabilizing factors and impacts, as well as the internal changes that can lead to emergency operation. The security according to the European Committee for Electrotechnical Standardization (CENELEC) is normally integrated under the conditions of reliability. The main objective of this study is the modeling of reliability of the communication service equipment, which is system with capability for performance recovery after failure. For this purpose, the method of Markov chains is used.
{"title":"Investigation of the Reliability of Service Equipment in Communication Networks","authors":"K. Angelov, S. Sadinov","doi":"10.1109/TELECOM48729.2019.8994894","DOIUrl":"https://doi.org/10.1109/TELECOM48729.2019.8994894","url":null,"abstract":"The security of a communication system is the system’s ability to resist the external destabilizing factors and impacts, as well as the internal changes that can lead to emergency operation. The security according to the European Committee for Electrotechnical Standardization (CENELEC) is normally integrated under the conditions of reliability. The main objective of this study is the modeling of reliability of the communication service equipment, which is system with capability for performance recovery after failure. For this purpose, the method of Markov chains is used.","PeriodicalId":127549,"journal":{"name":"2019 27th National Conference with International Participation (TELECOM)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124363412","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 : 2019-10-01DOI: 10.1109/TELECOM48729.2019.8994888
Diyana Kinaneva, Georgi V. Hristov, Jordan Raychev, P. Zahariev
In this paper we propose a platform for early forest fire detection that uses unmanned aerial vehicle for observing given territory. The UAV platforms are equipped with specialized cameras that are either optical or thermal. The focus of the paper falls on a method for using optical camera for fire detection. We pay attention to the powerful machine learning technique that is used for the implementation of object detection in images. We have trained an object detector that can recognize smoke and fire in the images and at the end we have evaluated the performance and accuracy of the model.
{"title":"Application of Artificial Intelligence in UAV platforms for Early Forest Fire Detection","authors":"Diyana Kinaneva, Georgi V. Hristov, Jordan Raychev, P. Zahariev","doi":"10.1109/TELECOM48729.2019.8994888","DOIUrl":"https://doi.org/10.1109/TELECOM48729.2019.8994888","url":null,"abstract":"In this paper we propose a platform for early forest fire detection that uses unmanned aerial vehicle for observing given territory. The UAV platforms are equipped with specialized cameras that are either optical or thermal. The focus of the paper falls on a method for using optical camera for fire detection. We pay attention to the powerful machine learning technique that is used for the implementation of object detection in images. We have trained an object detector that can recognize smoke and fire in the images and at the end we have evaluated the performance and accuracy of the model.","PeriodicalId":127549,"journal":{"name":"2019 27th National Conference with International Participation (TELECOM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124957920","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 : 2019-10-01DOI: 10.1109/TELECOM48729.2019.8994904
Y. Tomov
Nowadays, blockchain technologies based on peerto-peer networks [1] are generating a new multi-billion dollar economy that presents new challenges for humanity. This paper aims to examine blockchain technology, comment on its problems, and propose a new algorithm that will help solve some of the problems associated with the regulation of this economy and the use of cryptocurrencies as a means of payment.
{"title":"Challenges of blockchain technologies in the future","authors":"Y. Tomov","doi":"10.1109/TELECOM48729.2019.8994904","DOIUrl":"https://doi.org/10.1109/TELECOM48729.2019.8994904","url":null,"abstract":"Nowadays, blockchain technologies based on peerto-peer networks [1] are generating a new multi-billion dollar economy that presents new challenges for humanity. This paper aims to examine blockchain technology, comment on its problems, and propose a new algorithm that will help solve some of the problems associated with the regulation of this economy and the use of cryptocurrencies as a means of payment.","PeriodicalId":127549,"journal":{"name":"2019 27th National Conference with International Participation (TELECOM)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115110330","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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