Pub Date : 2007-11-05DOI: 10.1109/ICSCN.2007.350722
S. Chand, H. Om
Channelization is one of the important techniques for sharing a single physical channel among the multiple videos. In channelization the videos are partitioned into segments and the bandwidth of the physical channel is partitioned into logical channels. The first segment of each video is transmitted through the first logical channel, the second segment of each video through the second logical channel, and so forth. The segments are transmitted periodically through the logical channels. In this paper, the video signals to be transmitted through different logical channels are estimated. Furthermore, using the Hilbert transform the phase is estimated by incorporating the jitter delays occurring among the video segments while transmitting through the logical channels. The phase is helpful in estimating the storage space at the user's site so that continuous delivery of the video services can be maintained
{"title":"Phase Estimation in Video Transmission using Hilbert Transform","authors":"S. Chand, H. Om","doi":"10.1109/ICSCN.2007.350722","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350722","url":null,"abstract":"Channelization is one of the important techniques for sharing a single physical channel among the multiple videos. In channelization the videos are partitioned into segments and the bandwidth of the physical channel is partitioned into logical channels. The first segment of each video is transmitted through the first logical channel, the second segment of each video through the second logical channel, and so forth. The segments are transmitted periodically through the logical channels. In this paper, the video signals to be transmitted through different logical channels are estimated. Furthermore, using the Hilbert transform the phase is estimated by incorporating the jitter delays occurring among the video segments while transmitting through the logical channels. The phase is helpful in estimating the storage space at the user's site so that continuous delivery of the video services can be maintained","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131417100","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 : 2007-11-05DOI: 10.1109/ICSCN.2007.350702
S. Shobana, S. Priyadharshini, S. Amritha, G. Revadhi, R. Manickavasagam, B. Revathi, V. Vaidehi, S. Vasuhi
Code division multiple access (CDMA) is a digital wireless transmission technology that allows for a large amount of users to share access to a single radio channel. This technology is being widely used in cellular communication and can be extended to store and forward (S&F) payload that provides message relay service for several users with ground terminals, simultaneously. In this paper, the three layered model for the store and forward payload using CDMA medium access control (MAC) is considered. Their design methodologies are discussed assuming static code assignment
{"title":"Design of CDMA MAC for Microsatellite","authors":"S. Shobana, S. Priyadharshini, S. Amritha, G. Revadhi, R. Manickavasagam, B. Revathi, V. Vaidehi, S. Vasuhi","doi":"10.1109/ICSCN.2007.350702","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350702","url":null,"abstract":"Code division multiple access (CDMA) is a digital wireless transmission technology that allows for a large amount of users to share access to a single radio channel. This technology is being widely used in cellular communication and can be extended to store and forward (S&F) payload that provides message relay service for several users with ground terminals, simultaneously. In this paper, the three layered model for the store and forward payload using CDMA medium access control (MAC) is considered. Their design methodologies are discussed assuming static code assignment","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134052123","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 : 2007-11-05DOI: 10.1109/ICSCN.2007.350691
B. B. Kiranagi, D. S. Guru
In this paper, the importance of non-symmetric proximity between symbolic data is discussed and a new algorithm for clustering is proposed. The proposed algorithm works directly on the non-symmetric proximity matrices and is based on the leader oriented incremental approach. Experiments on the standard symbolic data sets have been conducted in order to study the efficacy of the proposed methodology
{"title":"An Attractive Leader Approach Based Clustering for Non-Symmetric Proximity","authors":"B. B. Kiranagi, D. S. Guru","doi":"10.1109/ICSCN.2007.350691","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350691","url":null,"abstract":"In this paper, the importance of non-symmetric proximity between symbolic data is discussed and a new algorithm for clustering is proposed. The proposed algorithm works directly on the non-symmetric proximity matrices and is based on the leader oriented incremental approach. Experiments on the standard symbolic data sets have been conducted in order to study the efficacy of the proposed methodology","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134145757","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 : 2007-11-05DOI: 10.1109/ICSCN.2007.350659
L. Jayashree, S. Arumugam
Prolonged network lifetime, scalability and reliability are the most common requirements for many ad-hoc sensor network applications. Clustering sensor nodes is an effective technique to achieve these goals. This paper assumes a heterogeneous network structure where nodes with higher capabilities act as cluster heads and others as members of the cluster. Nodes use multi hopping to reach the cluster heads and hence the cluster heads and the nodes closest to them decide the lifetime of the network. The contributions of this paper are: (i) it outlines the design issues to be considered in optimizing the performance of large-scale wireless sensor networks operating under energy and reliability constraints, (ii) It provides a model to calculate the optimum number of clusters to guarantee a minimum lifetime and validates the model using a simulation study
{"title":"Design Challenges for Optimizing the Performance of Energy Constrained Wireless Sensor Networks","authors":"L. Jayashree, S. Arumugam","doi":"10.1109/ICSCN.2007.350659","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350659","url":null,"abstract":"Prolonged network lifetime, scalability and reliability are the most common requirements for many ad-hoc sensor network applications. Clustering sensor nodes is an effective technique to achieve these goals. This paper assumes a heterogeneous network structure where nodes with higher capabilities act as cluster heads and others as members of the cluster. Nodes use multi hopping to reach the cluster heads and hence the cluster heads and the nodes closest to them decide the lifetime of the network. The contributions of this paper are: (i) it outlines the design issues to be considered in optimizing the performance of large-scale wireless sensor networks operating under energy and reliability constraints, (ii) It provides a model to calculate the optimum number of clusters to guarantee a minimum lifetime and validates the model using a simulation study","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134642457","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 : 2007-11-05DOI: 10.1109/ICSCN.2007.350658
S. Veeraraghavan, S. Bose, K. Anand, A. Kannan
This paper describes about an intelligent agent based intrusion detection and prevention system for mobile ad hoc network. This system collects data from application layer and network layer and classifies them using the log file data collected from these layers and local anomalies are computed using local agents finally it is sent to a global agent for integration. The local agents monitor the two layers of the network to determine the correlation among the observed anomalous patterns, reporting such abnormal behavior to the administrator for taking possible action. Our simulation results obtained after integration shows that it is possible to obtain high intrusion-detection rates (99.2%) and low false-alarm rates
{"title":"An Intelligent Agent Based Approach for Intrusion Detection and Prevention in Adhoc Networks","authors":"S. Veeraraghavan, S. Bose, K. Anand, A. Kannan","doi":"10.1109/ICSCN.2007.350658","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350658","url":null,"abstract":"This paper describes about an intelligent agent based intrusion detection and prevention system for mobile ad hoc network. This system collects data from application layer and network layer and classifies them using the log file data collected from these layers and local anomalies are computed using local agents finally it is sent to a global agent for integration. The local agents monitor the two layers of the network to determine the correlation among the observed anomalous patterns, reporting such abnormal behavior to the administrator for taking possible action. Our simulation results obtained after integration shows that it is possible to obtain high intrusion-detection rates (99.2%) and low false-alarm rates","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132232773","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 : 2007-11-05DOI: 10.1109/ICSCN.2007.350715
Nagarajanvelmurugan, S. Karthikeyan, P. Dananjayan
Adaptive resource allocation for multimedia quality of service (QoS) support in broadband wireless network is examined in this work. A service model consisting of three classes with different handoff dropping requirements is presented. Appropriate call admission control and resource reservation schemes are developed to allocate resource adaptively to the real time service classes with stringent delay bound. An efficient and effective measurement based dynamic resource allocation scheme is proposed for prioritized services. The non real time application serviced by the best effort model, are supported. The system accommodates adaptive multimedia applications to further reduce the blocking and dropping probabilities of real time application. The simulation results show that the proposed system can satisfy desired QoS of multimedia application under different traffic loads while achieving high channel utilization
{"title":"Resource Allocation Management for Multimedia QoS in Wireless Networks","authors":"Nagarajanvelmurugan, S. Karthikeyan, P. Dananjayan","doi":"10.1109/ICSCN.2007.350715","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350715","url":null,"abstract":"Adaptive resource allocation for multimedia quality of service (QoS) support in broadband wireless network is examined in this work. A service model consisting of three classes with different handoff dropping requirements is presented. Appropriate call admission control and resource reservation schemes are developed to allocate resource adaptively to the real time service classes with stringent delay bound. An efficient and effective measurement based dynamic resource allocation scheme is proposed for prioritized services. The non real time application serviced by the best effort model, are supported. The system accommodates adaptive multimedia applications to further reduce the blocking and dropping probabilities of real time application. The simulation results show that the proposed system can satisfy desired QoS of multimedia application under different traffic loads while achieving high channel utilization","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121075789","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 : 2007-11-05DOI: 10.1109/ICSCN.2007.350749
N. Elfadel, E. Idriss, A. Mohammed, A. Aziz, N. Saad
The need for high speed networks has motivated the telecommunication community to investigate the potential of optical code division multiple access (OCDMA) in local area networks. However, multiple access interference (MAI), which increases with the number of simultaneous users, severely limits the capacity of the system. Optical parallel interference cancellation (OPIC) has been used to reduce the effect of MAI. The drawback of OPIC is that, it increases the demand for hardware complexity, resulting into higher processing time and cost. To overcome these difficulties, an efficient method is presented in this paper called, one stage optical parallel interference cancellation (OS-OPIC) which is based mainly on OPIC. Performance analysis of the proposed design is done using optical orthogonal code (OOC) as signature sequence and new expression for error probability is demonstrated. It is shown that, the proposed method is effective to reduce the hardware complexity, processing time and cost while maintaining the same bit error probability at the cost of increasing threshold value
{"title":"Multi-user Detection for the Optical CDMA: One Stage Optical Parallel Interference Cancellation","authors":"N. Elfadel, E. Idriss, A. Mohammed, A. Aziz, N. Saad","doi":"10.1109/ICSCN.2007.350749","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350749","url":null,"abstract":"The need for high speed networks has motivated the telecommunication community to investigate the potential of optical code division multiple access (OCDMA) in local area networks. However, multiple access interference (MAI), which increases with the number of simultaneous users, severely limits the capacity of the system. Optical parallel interference cancellation (OPIC) has been used to reduce the effect of MAI. The drawback of OPIC is that, it increases the demand for hardware complexity, resulting into higher processing time and cost. To overcome these difficulties, an efficient method is presented in this paper called, one stage optical parallel interference cancellation (OS-OPIC) which is based mainly on OPIC. Performance analysis of the proposed design is done using optical orthogonal code (OOC) as signature sequence and new expression for error probability is demonstrated. It is shown that, the proposed method is effective to reduce the hardware complexity, processing time and cost while maintaining the same bit error probability at the cost of increasing threshold value","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114858105","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 : 2007-11-05DOI: 10.1109/ICSCN.2007.350655
S.F. Toha, U. K. Ngah
This paper presents one of the applications of digital image processing in artificial intelligence particularly in the field of medical diagnosis system. Currently in Malaysia the traditional method for the identification of Malaria parasites requires a trained technologist to manually examine and detect the number of the parasites subsequently by reading the slides. This is a very time consuming process, causes operator fatigue and is prone to human errors and inconsistency. An automated system is therefore needed to complete as much work as possible for the identification of Malaria parasites. The integration both soft computing tools has been successfully designed with the capability to improve the quality of the image, analyze and classify the image as well as calculating the number of Malaria parasites
{"title":"Computer Aided Medical Diagnosis for the Identification of Malaria Parasites","authors":"S.F. Toha, U. K. Ngah","doi":"10.1109/ICSCN.2007.350655","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350655","url":null,"abstract":"This paper presents one of the applications of digital image processing in artificial intelligence particularly in the field of medical diagnosis system. Currently in Malaysia the traditional method for the identification of Malaria parasites requires a trained technologist to manually examine and detect the number of the parasites subsequently by reading the slides. This is a very time consuming process, causes operator fatigue and is prone to human errors and inconsistency. An automated system is therefore needed to complete as much work as possible for the identification of Malaria parasites. The integration both soft computing tools has been successfully designed with the capability to improve the quality of the image, analyze and classify the image as well as calculating the number of Malaria parasites","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"82 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130285141","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 : 2007-11-05DOI: 10.1109/ICSCN.2007.350769
V. K, R. A, K. Suriya Kumar, M. Kannan
The major problem posed by very deep sub-micrometer is the inaccuracies which it introduces into the conventional electronic design automation tool estimates. The estimates of power and speed reported by these tools do not consider the effects posed by very deep sub micrometer because of the non-availability of 45 nm cell libraries. Thus, there is an urgent need of a design flow which results in power and speed predictions at very deep sub micrometer considering the various issues in the same. The objective of this research paper is to analyze the prerequisites for electronic design automation tool which provides the front-end engineer the real insight into the physical manifestation of the design in the deep sub-micron. The tool has been partially implemented using PERL, and has yielded results which have been validated at 180 nm after comparison with conventional synthesis engines. The accuracy of results depends solely on the accuracy of the sub 65 nm models employed for gates and interconnects
{"title":"Empowering ASIC Front-End to Meet the Challenges of the Ultra Deep Sub-Micrometer","authors":"V. K, R. A, K. Suriya Kumar, M. Kannan","doi":"10.1109/ICSCN.2007.350769","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350769","url":null,"abstract":"The major problem posed by very deep sub-micrometer is the inaccuracies which it introduces into the conventional electronic design automation tool estimates. The estimates of power and speed reported by these tools do not consider the effects posed by very deep sub micrometer because of the non-availability of 45 nm cell libraries. Thus, there is an urgent need of a design flow which results in power and speed predictions at very deep sub micrometer considering the various issues in the same. The objective of this research paper is to analyze the prerequisites for electronic design automation tool which provides the front-end engineer the real insight into the physical manifestation of the design in the deep sub-micron. The tool has been partially implemented using PERL, and has yielded results which have been validated at 180 nm after comparison with conventional synthesis engines. The accuracy of results depends solely on the accuracy of the sub 65 nm models employed for gates and interconnects","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128528681","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 : 2007-11-05DOI: 10.1109/ICSCN.2007.350651
P. Prakasam, M. Madheswaran
This paper presents an automatic modulation identification (AMI) algorithm using wavelet transform for distinguishing QPSK and GMSK in adaptive demodulator. The developed algorithm has been tested by introducing additive white Gaussian noise (AWGN) in the modulated signal. It has been found that the identification of QPSK and GMSK using histogram peaks simplifies the procedure. The performance of the proposed AMI algorithm has been computed by estimating the bit error rate (BER) and reconstruction efficiency. This shows that the correct modulation identification is possible to a lower bound of 15 dB and 6 dB for GMSK and QPSK respectively
提出了一种基于小波变换的自适应解调器中QPSK和GMSK的自动调制识别算法。通过在调制信号中引入加性高斯白噪声(AWGN)对该算法进行了验证。研究发现，利用直方图峰值识别QPSK和GMSK简化了程序。通过估计误码率和重建效率，计算了AMI算法的性能。这表明GMSK和QPSK的正确调制识别下限分别为15 dB和6 dB
{"title":"Automatic Modulation Identification of QPSK and GMSK using Wavelet Transform for Adaptive Demodulator in SDR","authors":"P. Prakasam, M. Madheswaran","doi":"10.1109/ICSCN.2007.350651","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350651","url":null,"abstract":"This paper presents an automatic modulation identification (AMI) algorithm using wavelet transform for distinguishing QPSK and GMSK in adaptive demodulator. The developed algorithm has been tested by introducing additive white Gaussian noise (AWGN) in the modulated signal. It has been found that the identification of QPSK and GMSK using histogram peaks simplifies the procedure. The performance of the proposed AMI algorithm has been computed by estimating the bit error rate (BER) and reconstruction efficiency. This shows that the correct modulation identification is possible to a lower bound of 15 dB and 6 dB for GMSK and QPSK respectively","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128579567","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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