Pub Date : 2013-07-03DOI: 10.1109/BlackSeaCom.2013.6623419
M. Kocaoglu, Cuneyt Oksuz, Ö. Akan
The supply chain optimization is becoming more and more important, and more challenging due to its increased complexity. Companies should properly exploit ICT systems to better keep track of their products. Communication techniques employed in the supply chain should be adaptive to any channel condition to assure continuous reliable operation. In this paper, we investigate the effects of channel conditions and the selected error control technique on the supply chain inventory database update in terms of database error rate and end-to-end delay. We derive the analytical expressions and verify them with extensive simulations and show that channel codes adapting to channel conditions would improve reliability of the inventory database.
{"title":"Effect of channel conditions on inventory database update in supply chains","authors":"M. Kocaoglu, Cuneyt Oksuz, Ö. Akan","doi":"10.1109/BlackSeaCom.2013.6623419","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2013.6623419","url":null,"abstract":"The supply chain optimization is becoming more and more important, and more challenging due to its increased complexity. Companies should properly exploit ICT systems to better keep track of their products. Communication techniques employed in the supply chain should be adaptive to any channel condition to assure continuous reliable operation. In this paper, we investigate the effects of channel conditions and the selected error control technique on the supply chain inventory database update in terms of database error rate and end-to-end delay. We derive the analytical expressions and verify them with extensive simulations and show that channel codes adapting to channel conditions would improve reliability of the inventory database.","PeriodicalId":170309,"journal":{"name":"2013 First International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124243836","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 : 2013-07-03DOI: 10.1109/BlackSeaCom.2013.6623379
Muhamad Felemban, Emad A. Felemban
Currently Underwater Acoustic Sensor Network (UASN) is playing a vital role in exploration and monitoring operations in underwater environments that are difficult to reach. Underwater communication mainly relies on acoustic waves, which limits the performance of UASN due to its limited bandwidth, large propagation delays, and high path loss. In this paper, we present a comprehensive mathematical model for underwater sensor network communication compared to available mathematical models in the literature. We also investigate the tradeoffs between energy consumptions, end-to-end delay, and number of hops of UASN. The model obtained in this paper is used to determine the number of hops in energy efficient UASNs for underwater time-critical missions.
{"title":"Energy-delay tradeoffs for Underwater Acoustic Sensor Networks","authors":"Muhamad Felemban, Emad A. Felemban","doi":"10.1109/BlackSeaCom.2013.6623379","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2013.6623379","url":null,"abstract":"Currently Underwater Acoustic Sensor Network (UASN) is playing a vital role in exploration and monitoring operations in underwater environments that are difficult to reach. Underwater communication mainly relies on acoustic waves, which limits the performance of UASN due to its limited bandwidth, large propagation delays, and high path loss. In this paper, we present a comprehensive mathematical model for underwater sensor network communication compared to available mathematical models in the literature. We also investigate the tradeoffs between energy consumptions, end-to-end delay, and number of hops of UASN. The model obtained in this paper is used to determine the number of hops in energy efficient UASNs for underwater time-critical missions.","PeriodicalId":170309,"journal":{"name":"2013 First International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122975696","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 : 2013-07-03DOI: 10.1109/BlackSeaCom.2013.6623418
C. Guven, S. Bayhan, Fatih Alagöz
Previous works in cognitive radio networks (CRNs) have shown that cooperation in sensing improves sensing reliability and in turn enhances the network throughput. However, the cooperative behavior is accepted as the default mode of operation, which may not always hold. In this work, we loose this assumption and introduce a cooperative mode of operation conditioned on social relations between Cognitive Radios (CRs). Rather than taking CRs as wireless devices with no context, we associate each CR with its user that has some social relations, e.g. friendship, community, selfishness. Using these relations among CRs, we propose a social-aware cooperative sensing scheme and analyze its effects on sensing performance. We believe that exploiting social metrics assists cooperative sensing in CRNs and a model with social relations embedded will fit better to the next decade's networking paradigm.
{"title":"Effect of social relations on cooperative sensing in cognitive radio networks","authors":"C. Guven, S. Bayhan, Fatih Alagöz","doi":"10.1109/BlackSeaCom.2013.6623418","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2013.6623418","url":null,"abstract":"Previous works in cognitive radio networks (CRNs) have shown that cooperation in sensing improves sensing reliability and in turn enhances the network throughput. However, the cooperative behavior is accepted as the default mode of operation, which may not always hold. In this work, we loose this assumption and introduce a cooperative mode of operation conditioned on social relations between Cognitive Radios (CRs). Rather than taking CRs as wireless devices with no context, we associate each CR with its user that has some social relations, e.g. friendship, community, selfishness. Using these relations among CRs, we propose a social-aware cooperative sensing scheme and analyze its effects on sensing performance. We believe that exploiting social metrics assists cooperative sensing in CRNs and a model with social relations embedded will fit better to the next decade's networking paradigm.","PeriodicalId":170309,"journal":{"name":"2013 First International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124294151","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 : 2013-07-03DOI: 10.1109/BlackSeaCom.2013.6623399
E. Başar, Ümit Aygölü, E. Panayirci
In this paper, a novel orthogonal frequency division multiplexing (OFDM) scheme, which is called OFDM with index modulation (OFDM-IM), is proposed for frequency-selective fading channels in the presence of high mobility. In this scheme, inspiring from the recently introduced spatial modulation concept for multiple-input multiple-output (MIMO) channels, the information is conveyed not only by M-ary signal constellations as in classical OFDM, but also by the indices of the subcarriers, which are activated according to the incoming bit stream. Different low complexity transceiver structures based on maximum likelihood (ML) detection or log-likelihood ratio (LLR) calculation are proposed. It is shown via computer simulations that the proposed scheme achieves significantly better error performance than classical OFDM.
{"title":"Orthogonal frequency division multiplexing with index modulation in the presence of high mobility","authors":"E. Başar, Ümit Aygölü, E. Panayirci","doi":"10.1109/BlackSeaCom.2013.6623399","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2013.6623399","url":null,"abstract":"In this paper, a novel orthogonal frequency division multiplexing (OFDM) scheme, which is called OFDM with index modulation (OFDM-IM), is proposed for frequency-selective fading channels in the presence of high mobility. In this scheme, inspiring from the recently introduced spatial modulation concept for multiple-input multiple-output (MIMO) channels, the information is conveyed not only by M-ary signal constellations as in classical OFDM, but also by the indices of the subcarriers, which are activated according to the incoming bit stream. Different low complexity transceiver structures based on maximum likelihood (ML) detection or log-likelihood ratio (LLR) calculation are proposed. It is shown via computer simulations that the proposed scheme achieves significantly better error performance than classical OFDM.","PeriodicalId":170309,"journal":{"name":"2013 First International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121587480","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 : 2013-07-03DOI: 10.1109/BlackSeaCom.2013.6623413
L. Vanfretti, M. Baudette, I. A. Khatib, M. Almas, J. Gjerde
This article provides an overview of a monitoring application, its testing and validation process. The application was developed for the detection of sub-synchronous oscillations in power systems, utilizing real-time measurements from phasor measurement units (PMUs). It uses two algorithms simultaneously to both detect the frequency at which the oscillatory event occurs and the level of energy in the oscillations. The application has been developed and tested in the framework of SmarTS Lab, an environment capable of hardware-in-the-loop (HIL) simulation. The necessary components of the real-time chain of data acquisition are presented in this paper, as well as testing and validation results, to demonstrate the accuracy of the monitoring tool and the feasibility of fast prototyping for real-time PMU measurements based applications using the SmarTS Lab environment.
{"title":"Testing and validation of a fast real-time oscillation detection PMU-based application for wind-farm monitoring","authors":"L. Vanfretti, M. Baudette, I. A. Khatib, M. Almas, J. Gjerde","doi":"10.1109/BlackSeaCom.2013.6623413","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2013.6623413","url":null,"abstract":"This article provides an overview of a monitoring application, its testing and validation process. The application was developed for the detection of sub-synchronous oscillations in power systems, utilizing real-time measurements from phasor measurement units (PMUs). It uses two algorithms simultaneously to both detect the frequency at which the oscillatory event occurs and the level of energy in the oscillations. The application has been developed and tested in the framework of SmarTS Lab, an environment capable of hardware-in-the-loop (HIL) simulation. The necessary components of the real-time chain of data acquisition are presented in this paper, as well as testing and validation results, to demonstrate the accuracy of the monitoring tool and the feasibility of fast prototyping for real-time PMU measurements based applications using the SmarTS Lab environment.","PeriodicalId":170309,"journal":{"name":"2013 First International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133094268","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 : 2012-11-19DOI: 10.1109/BlackSeaCom.2013.6623405
Nika Salia, A. Gamkrelidze, L. Ephremidze
Wavelets have found beneficial applicability in various aspects of wireless communication systems design, including channel modeling, transceiver design, data representation, data compression, source and channel coding, interference mitigation, signal denoising and energy efficient networking. Factorization of compact wavelet matrices into primitive ones has been known for more than 20 years. This method makes it possible to generate wavelet matrix coefficients and also to specify them by their first row. Recently, a new parametrization of compact wavelet matrices of the same order and degree has been introduced by the last author. This method also enables us to fulfill the above mentioned tasks of matrix constructions. In the present paper, we briefly describe the corresponding algorithms based on two different methods, and numerically compare their performance.
{"title":"Numerical comparison of different algorithms for construction of wavelet matrices","authors":"Nika Salia, A. Gamkrelidze, L. Ephremidze","doi":"10.1109/BlackSeaCom.2013.6623405","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2013.6623405","url":null,"abstract":"Wavelets have found beneficial applicability in various aspects of wireless communication systems design, including channel modeling, transceiver design, data representation, data compression, source and channel coding, interference mitigation, signal denoising and energy efficient networking. Factorization of compact wavelet matrices into primitive ones has been known for more than 20 years. This method makes it possible to generate wavelet matrix coefficients and also to specify them by their first row. Recently, a new parametrization of compact wavelet matrices of the same order and degree has been introduced by the last author. This method also enables us to fulfill the above mentioned tasks of matrix constructions. In the present paper, we briefly describe the corresponding algorithms based on two different methods, and numerically compare their performance.","PeriodicalId":170309,"journal":{"name":"2013 First International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127101460","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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