Pub Date : 2007-12-12DOI: 10.1109/CANET.2007.4401689
N. Usmanova, N.G. Kushakova
The possibility of applying the associative media concept for investigation of information processes and components of traffic in telecommunication network is considered and results of realization the approach based on associative processes simulation for decreasing the packet delay time are provided.
{"title":"Interaction of functional modules and information processes in modern telecommunication network","authors":"N. Usmanova, N.G. Kushakova","doi":"10.1109/CANET.2007.4401689","DOIUrl":"https://doi.org/10.1109/CANET.2007.4401689","url":null,"abstract":"The possibility of applying the associative media concept for investigation of information processes and components of traffic in telecommunication network is considered and results of realization the approach based on associative processes simulation for decreasing the packet delay time are provided.","PeriodicalId":413993,"journal":{"name":"2007 3rd IEEE/IFIP International Conference in Central Asia on Internet","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134117834","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 : 2007-12-12DOI: 10.1109/CANET.2007.4401690
I. Gavrilov, A. Chernyshov, S. M. Ibraeva, J.F. Kabanova, A. Puziy, M. Suvorova
In article questions of TV video streams compression efficiency increasing by codecs on the basis of wavelet transformations, due to elimination of time redundancy by means of formation of an interframe difference are considered. Experimental results of compression of interframe image differences of various plots in relation to the keyframe are resulted.
{"title":"Interframe processing of TV images in wavelet codecs for cellular communication systems","authors":"I. Gavrilov, A. Chernyshov, S. M. Ibraeva, J.F. Kabanova, A. Puziy, M. Suvorova","doi":"10.1109/CANET.2007.4401690","DOIUrl":"https://doi.org/10.1109/CANET.2007.4401690","url":null,"abstract":"In article questions of TV video streams compression efficiency increasing by codecs on the basis of wavelet transformations, due to elimination of time redundancy by means of formation of an interframe difference are considered. Experimental results of compression of interframe image differences of various plots in relation to the keyframe are resulted.","PeriodicalId":413993,"journal":{"name":"2007 3rd IEEE/IFIP International Conference in Central Asia on Internet","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115221468","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 : 2007-12-12DOI: 10.1109/CANET.2007.4401712
l.I. Jumanov, A. Akhatov, O. Djumanov
The architecture of uniform information space of Republic of Uzbekistan by a hierarchical principle on the basis distributed mobile IT systems is stated. For the information space of regional management which is formed as set of the distributed databases and knowledge, storehouses of the information, computing centers, managing systems, and also applied Internet-portals and systems for representation of modern e-services the task of providing of reliability of inputting, transfer and processing of the information of a various nature and format is put and solved at a level of the users of network services of an applied level (Applied, Presentation, Session levels of OSI model). The algorithms based on principles of statistical and dictionary coding are developed for the control of the information reliability at the expense of statistical redundancy. There are used the schemes of coding by methods of Huffman, Lempel-Ziv-Welch, transformation of Burrows-Wheeler and arithmetical coding.
{"title":"An effective quality control of textual information on the basis of statistical redundancy in distributed mobile IT systems and e-applications","authors":"l.I. Jumanov, A. Akhatov, O. Djumanov","doi":"10.1109/CANET.2007.4401712","DOIUrl":"https://doi.org/10.1109/CANET.2007.4401712","url":null,"abstract":"The architecture of uniform information space of Republic of Uzbekistan by a hierarchical principle on the basis distributed mobile IT systems is stated. For the information space of regional management which is formed as set of the distributed databases and knowledge, storehouses of the information, computing centers, managing systems, and also applied Internet-portals and systems for representation of modern e-services the task of providing of reliability of inputting, transfer and processing of the information of a various nature and format is put and solved at a level of the users of network services of an applied level (Applied, Presentation, Session levels of OSI model). The algorithms based on principles of statistical and dictionary coding are developed for the control of the information reliability at the expense of statistical redundancy. There are used the schemes of coding by methods of Huffman, Lempel-Ziv-Welch, transformation of Burrows-Wheeler and arithmetical coding.","PeriodicalId":413993,"journal":{"name":"2007 3rd IEEE/IFIP International Conference in Central Asia on Internet","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121345545","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 : 2007-12-12DOI: 10.1109/CANET.2007.4401708
Chun-Liang Liu, Chung-Hsin Huang, C. Chiu
In this paper, an image based ray-tracing model is used to calculate the channel capacity for various materials of partitions in indoor ultra wideband (UWB) system with multiple input multiple output (MIMO). The material parameters of the partitions such as dielectric constant and conductivity are both dependent on operation frequency in our calculations for more precise results. The effects of various materials of partitions on 2times2 MIMO UWB system are simulated for different signal-to-noise ratio (SNR).
{"title":"Channel capacity for various materials of partitions in indoor ultra wideband communication system with multiple input multiple output","authors":"Chun-Liang Liu, Chung-Hsin Huang, C. Chiu","doi":"10.1109/CANET.2007.4401708","DOIUrl":"https://doi.org/10.1109/CANET.2007.4401708","url":null,"abstract":"In this paper, an image based ray-tracing model is used to calculate the channel capacity for various materials of partitions in indoor ultra wideband (UWB) system with multiple input multiple output (MIMO). The material parameters of the partitions such as dielectric constant and conductivity are both dependent on operation frequency in our calculations for more precise results. The effects of various materials of partitions on 2times2 MIMO UWB system are simulated for different signal-to-noise ratio (SNR).","PeriodicalId":413993,"journal":{"name":"2007 3rd IEEE/IFIP International Conference in Central Asia on Internet","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128065642","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 : 2007-12-12DOI: 10.1109/CANET.2007.4401719
K. Yadav, N. Singh, S. Maskara
The need for spectrally efficient transmission on wireless channels can be achieved by adaptive transmission in which channel prediction is an important tool to combat the harmful effects of fading. The study in this paper has been emphasized to investigate the channel prediction technique using pilot symbol assisted modulation (PSAM). This technique is implemented using modified long range prediction (MLRP) and estimation of signal parameters using rotation invariance technique (ESPRIT) algorithm. This paper compares PSAM, with other techniques and also put some results for Wireless LANs. A significant improvement in terms of mean square error, predictor order, predicted channel envelope and bit error rate has been achieved.
{"title":"Analysis of pilot symbol assisted modulation using modified long range prediction algorithm for rayleigh fading channel","authors":"K. Yadav, N. Singh, S. Maskara","doi":"10.1109/CANET.2007.4401719","DOIUrl":"https://doi.org/10.1109/CANET.2007.4401719","url":null,"abstract":"The need for spectrally efficient transmission on wireless channels can be achieved by adaptive transmission in which channel prediction is an important tool to combat the harmful effects of fading. The study in this paper has been emphasized to investigate the channel prediction technique using pilot symbol assisted modulation (PSAM). This technique is implemented using modified long range prediction (MLRP) and estimation of signal parameters using rotation invariance technique (ESPRIT) algorithm. This paper compares PSAM, with other techniques and also put some results for Wireless LANs. A significant improvement in terms of mean square error, predictor order, predicted channel envelope and bit error rate has been achieved.","PeriodicalId":413993,"journal":{"name":"2007 3rd IEEE/IFIP International Conference in Central Asia on Internet","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131208530","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 : 2007-12-12DOI: 10.1109/CANET.2007.4401715
M. Akbari, M. Ahmadian, S. Salari
Repeat of preamble is a usual method for time and frequency synchronization in a large group of multicarrier systems. The essential drawback of this method is reduction of maximum estimated frequency offset range with increasing the length of preamble. Recently, Zhang et al. proposed a method for joint frame synchronization and carrier frequency offset estimation scheme in OFDM systems. To the best knowledge of the authors, no extend of this method for MIMO-OFDM systems have been presented in the literature yet. In this paper we propose a new extension of joint frame and frequency synchronization of MIMO-OFDM systems with the preamble we name it "Mirror preamble". Increase the maximum carrier frequency offset acquisition range up to one half of the total bandwidth of all subcarriers is a desire result obtained from mirror preamble. In this paper we have used Zero Correlation Zone (ZCZ) sequences in the proposed preamble structure and to the contrary of Zhang et al. that neglected the effects of dispersive multi-path channel in their analysis, we have a discussion about reduction of these effects in the methods based mirror preamble.
{"title":"Joint frame and frequency synchronization for MIMO OFDM systems with ZCZ sequences","authors":"M. Akbari, M. Ahmadian, S. Salari","doi":"10.1109/CANET.2007.4401715","DOIUrl":"https://doi.org/10.1109/CANET.2007.4401715","url":null,"abstract":"Repeat of preamble is a usual method for time and frequency synchronization in a large group of multicarrier systems. The essential drawback of this method is reduction of maximum estimated frequency offset range with increasing the length of preamble. Recently, Zhang et al. proposed a method for joint frame synchronization and carrier frequency offset estimation scheme in OFDM systems. To the best knowledge of the authors, no extend of this method for MIMO-OFDM systems have been presented in the literature yet. In this paper we propose a new extension of joint frame and frequency synchronization of MIMO-OFDM systems with the preamble we name it \"Mirror preamble\". Increase the maximum carrier frequency offset acquisition range up to one half of the total bandwidth of all subcarriers is a desire result obtained from mirror preamble. In this paper we have used Zero Correlation Zone (ZCZ) sequences in the proposed preamble structure and to the contrary of Zhang et al. that neglected the effects of dispersive multi-path channel in their analysis, we have a discussion about reduction of these effects in the methods based mirror preamble.","PeriodicalId":413993,"journal":{"name":"2007 3rd IEEE/IFIP International Conference in Central Asia on Internet","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114862181","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 : 2007-12-12DOI: 10.1109/CANET.2007.4401709
J. Azizov, O. Hidoev, J. Sangirov, D. Rahmatov
As global standards evolve on WPAN mobility, engineering design becomes more challenging for sensor nodes that form WPAN groups at random based on data sensing and acquisition (application) profiles. As sensor node platforms typically have computation blocks that can handle a minimal set of instructions (8 bit microcontrollers and less) and are greatly constrained (8KB static firmware footprint and 64KB RAM), the clear challenge in supporting multi-applications (and hence multi-radios) to enhance the sensor 's functionalities is the implementation of different radio and application profile stacks on the embedded system. The main design bottlenecks are system architecture optimization for multi-radio stacks, application-driven PHY/MAC emulation in the 8KB static firmware and of course, ensuring low power and high battery life. Our studies indicate that overcoming these embedded systems engineering bottlenecks in sensor node designs involves rethinking a few standards and raising the need to have new standards in the IETF LoWPAN WG. On this paper, we would like to show the need to introduce a new protocol in the LoWPAN WG derived from overcoming some of the sensor node design bottlenecks in seamless pervasive indoor environments.
{"title":"Impact of application-driven multi-radio emulation in embedded devices on IETF LoWPAN standards","authors":"J. Azizov, O. Hidoev, J. Sangirov, D. Rahmatov","doi":"10.1109/CANET.2007.4401709","DOIUrl":"https://doi.org/10.1109/CANET.2007.4401709","url":null,"abstract":"As global standards evolve on WPAN mobility, engineering design becomes more challenging for sensor nodes that form WPAN groups at random based on data sensing and acquisition (application) profiles. As sensor node platforms typically have computation blocks that can handle a minimal set of instructions (8 bit microcontrollers and less) and are greatly constrained (8KB static firmware footprint and 64KB RAM), the clear challenge in supporting multi-applications (and hence multi-radios) to enhance the sensor 's functionalities is the implementation of different radio and application profile stacks on the embedded system. The main design bottlenecks are system architecture optimization for multi-radio stacks, application-driven PHY/MAC emulation in the 8KB static firmware and of course, ensuring low power and high battery life. Our studies indicate that overcoming these embedded systems engineering bottlenecks in sensor node designs involves rethinking a few standards and raising the need to have new standards in the IETF LoWPAN WG. On this paper, we would like to show the need to introduce a new protocol in the LoWPAN WG derived from overcoming some of the sensor node design bottlenecks in seamless pervasive indoor environments.","PeriodicalId":413993,"journal":{"name":"2007 3rd IEEE/IFIP International Conference in Central Asia on Internet","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117090428","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 : 2007-12-12DOI: 10.1109/CANET.2007.4401702
S. A. Sadchikova, Aleksey V. Son, V. M. Son
This paper introduces model of associative switching network, based on binary relations of associative calculus, group theory and finite state automaton. This paper describes architecture of switching element of broadband associative switching network. The structural relations are based on group theory and associative calculus. Application of group theory permits to describe switching elements as finite automaton, which executes procedures of switching and route selection on hardware logic level. So, switching elements can be implemented on the optical and optoelectronic basis.
{"title":"Model of broadband associative switching network","authors":"S. A. Sadchikova, Aleksey V. Son, V. M. Son","doi":"10.1109/CANET.2007.4401702","DOIUrl":"https://doi.org/10.1109/CANET.2007.4401702","url":null,"abstract":"This paper introduces model of associative switching network, based on binary relations of associative calculus, group theory and finite state automaton. This paper describes architecture of switching element of broadband associative switching network. The structural relations are based on group theory and associative calculus. Application of group theory permits to describe switching elements as finite automaton, which executes procedures of switching and route selection on hardware logic level. So, switching elements can be implemented on the optical and optoelectronic basis.","PeriodicalId":413993,"journal":{"name":"2007 3rd IEEE/IFIP International Conference in Central Asia on Internet","volume":"82 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129959696","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 : 2007-12-12DOI: 10.1109/CANET.2007.4401666
F. Yu, Yun Li, Fei Fang, Qianbin Chen
Energy aware routing protocol plays an important role in the performance of mobile ad hoc networks because mobile hosts in such networks are usually battery-operated. In this paper, based on TORA, we present an energy-aware routing protocol E-TORA. E-TORA selects routes according to hop count and residual energy of nodes. The nodes that have more energy have more probability chosen by E-TORA. Simulation results comparing with TORA in NS-2 show that E-TORA can balance effectively energy consumption of each node and increase evidently the lifetime of the network.
{"title":"A new TORA-based energy aware routing protocol in mobile ad hoc networks","authors":"F. Yu, Yun Li, Fei Fang, Qianbin Chen","doi":"10.1109/CANET.2007.4401666","DOIUrl":"https://doi.org/10.1109/CANET.2007.4401666","url":null,"abstract":"Energy aware routing protocol plays an important role in the performance of mobile ad hoc networks because mobile hosts in such networks are usually battery-operated. In this paper, based on TORA, we present an energy-aware routing protocol E-TORA. E-TORA selects routes according to hop count and residual energy of nodes. The nodes that have more energy have more probability chosen by E-TORA. Simulation results comparing with TORA in NS-2 show that E-TORA can balance effectively energy consumption of each node and increase evidently the lifetime of the network.","PeriodicalId":413993,"journal":{"name":"2007 3rd IEEE/IFIP International Conference in Central Asia on Internet","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121938324","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 : 2007-12-12DOI: 10.1109/CANET.2007.4401686
M. T. Honary, J. Chitizadeh
Energy efficiency is a critical parameter in wireless sensor networks. Clustering the nodes and controlling the number of cluster heads and members provides an effective way of energy efficiency. In this paper, we develop a clustering protocol for single hop wireless sensor networks. We utilize a competition algorithm for cluster selection phase that the competition's range is a function of distance to base station. Our objective is to balance the energy consumption of the clusterheads all over the network. Simulation results show the more balanced energy consumption and longer lifetime. Moreover, the proposed scheme delivers more packets of data to the base station, which provides more accuracy of the monitored phenomenon.
{"title":"Lifetime prolonging of wireless sensor networks via a recursive clustering algorithm","authors":"M. T. Honary, J. Chitizadeh","doi":"10.1109/CANET.2007.4401686","DOIUrl":"https://doi.org/10.1109/CANET.2007.4401686","url":null,"abstract":"Energy efficiency is a critical parameter in wireless sensor networks. Clustering the nodes and controlling the number of cluster heads and members provides an effective way of energy efficiency. In this paper, we develop a clustering protocol for single hop wireless sensor networks. We utilize a competition algorithm for cluster selection phase that the competition's range is a function of distance to base station. Our objective is to balance the energy consumption of the clusterheads all over the network. Simulation results show the more balanced energy consumption and longer lifetime. Moreover, the proposed scheme delivers more packets of data to the base station, which provides more accuracy of the monitored phenomenon.","PeriodicalId":413993,"journal":{"name":"2007 3rd IEEE/IFIP International Conference in Central Asia on Internet","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121988448","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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