2013 Tenth International Conference on Wireless and Optical Communications Networks (WOCN)最新文献

{"title":"A novel architecture and media access protocol for cognitive radio based autonomous femtocell networks","authors":"Khalim Amjad Meerja, P. Ho, Bin Wu, Hsiang-Fu Yu","doi":"10.1109/WOCN.2013.6616217","DOIUrl":"https://doi.org/10.1109/WOCN.2013.6616217","url":null,"abstract":"Femtocell networks are being deployed in homes and offices to extend the services of cellular networks in indoor network environment. In this paper we propose a cognitive radio based autonomous femtocell network architecture that shares the radio spectrum of a 4G macrocell network. The proposed femtocell architecture uses an overlay access mechanism under the presumption of a hierarchical access scenario where femtocell users are secondary users to the shared spectrum. A media access control protocol is proposed for this femtocell network architecture which exploits the time division duplex operation of the uplink and downlink transmissions in macrocell. The performance of the media access control protocol in terms of the available number of frames and the throughput performance of the femtocell network is presented to validate the effectiveness of the proposed femtocell network architecture.","PeriodicalId":388309,"journal":{"name":"2013 Tenth International Conference on Wireless and Optical Communications Networks (WOCN)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126443431","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}

{"title":"Variety event detection in Wireless Sensor Networks through single hop cluster topology","authors":"A. Chatterjee, D. Mukherjee","doi":"10.1109/WOCN.2013.6616201","DOIUrl":"https://doi.org/10.1109/WOCN.2013.6616201","url":null,"abstract":"Event detection techniques in Wireless Sensor Networks (WSNs) are important for environment monitoring and object tracking. Here, we focus on Single hop WSNs since they have received very little attention from researchers, with extremely few contributions being available, although the usefulness of these single hop WSNs are widely accepted. Furthermore, in this paper, we achieve the necessary requirement of establishing the effectiveness of proposed WSN protocol purely through theoretical analysis, thus avoiding the need for incomplete and multiple error-prone simulation results, which can form the basis of some important results in later contributions. We have proposed here a new protocol named SCHTED on single hop cluster tree topology for multiple and variety event detection in WSNs. In this model, a WSN is divided into several clusters. The clusters contain high but varied density of sensors. Each cluster contains a cluster head which is a child node of some other cluster head. In this way the entire network is arranged in a tree topology with the root node as the sink. Few sensors in each cluster, randomly selected by the sink, sense and measure a predefined set of parameters from the environment. Thereafter, the sensors compare their current measurement with that of the previous sensing step. If any sensor finds significant difference in the two measurements, it multicasts the information of occurrence of an event to its neighboring cluster members. If the number of sensors sensing a significant difference in measurements in consecutive sensing step exceeds a certain predefined threshold, as detected by the cluster head, then the cluster head send notification to its neighboring cluster head that an event has occurred. This information travels through the tree topology to ultimately reach the sink. Different cases of event detection such as sensitive events, severe events, high frequency events, real time processing, point event as well as region events are considered here. Analysis reveals that this protocol scheme is suitable for both continuous and event based monitoring in noisy environment and can also be made adaptive to the changing requirements.","PeriodicalId":388309,"journal":{"name":"2013 Tenth International Conference on Wireless and Optical Communications Networks (WOCN)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126147269","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}

{"title":"A new modified UMP BP decoding algorithm of quasi-cyclic LDPC codes based on oscillation estimation","authors":"F. Zhang, Fa Xia Yang, Meng Dong","doi":"10.1109/WOCN.2013.6616219","DOIUrl":"https://doi.org/10.1109/WOCN.2013.6616219","url":null,"abstract":"A modified algorithm based on the Uniformly Most Powerful Belief Propagation (UMP BP) algorithm are studied for decoding implementation of regular QC-LDPC codes by introducing two factors of mean square difference and ratio in check processing. The decoding algorithm is a combination of soft decision and hard decision to adaptively decrease the oscillation caused by the change of ex-LLRs sign, further to reduce the errors of UMP BP algorithm caused in first iteration, Simulation result shows that implementation of improved DARBFMS algorithm outperform conventional algorithms. Compared with the improved algorithm in irregular LDPC codes, performance in QC-LDPC codes seems better.","PeriodicalId":388309,"journal":{"name":"2013 Tenth International Conference on Wireless and Optical Communications Networks (WOCN)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133740640","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}

{"title":"Study of effect of parameters of laser diode on the performance of free space optical terrestrial link","authors":"P. Mishra, D. Chadha, V. Chandra","doi":"10.1109/WOCN.2013.6616185","DOIUrl":"https://doi.org/10.1109/WOCN.2013.6616185","url":null,"abstract":"The optical link suffers from degradation due to attenuation, increase of bit rate and due to increase in the propagation distance, it also depends on the characteristics of the optical laser source. The direct modulated laser (DML) source radiation parameters such as photon lifetime, optical confinement factor, and gain coefficient are some of the important parameters which affect the performance of the optical communication link. The system bit error rate (BER) has been monitored to determine the effect of different radiation parameters of the DML laser on the performance of the Free Space Optical (FSO) link.","PeriodicalId":388309,"journal":{"name":"2013 Tenth International Conference on Wireless and Optical Communications Networks (WOCN)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132449438","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}

{"title":"Cluster formation through improved weighted clustering algorithm (IWCA) for mobile ad-hoc networks","authors":"Neha Gupta, R. Singh, M. Shrivastava","doi":"10.1109/WOCN.2013.6616243","DOIUrl":"https://doi.org/10.1109/WOCN.2013.6616243","url":null,"abstract":"A clustering architecture increases network lifetime, fault tolerance and results in more efficient use of network resources. Mobile Ad-hoc Networks (MANETs) are extremely vulnerable to a variety of misbehaviors because of their basic features like: lack of communication infrastructure, dynamic network topology and short transmission range. To detect and reduce those misbehaviors, numerous trust management schemes have been proposed for MANETs. To effectively set up MANET, security is one of the main challenges that must be undertaken. The weight based clustering approach is based on combined weight metric that takes into account of several system parameters like the mobility, degree difference, transmission range and battery power of the node. One way to support efficient communication between nodes is to partition ad hoc networks into clusters. Various clustering schemes have been proposed to form clusters. Proposed IWCA algorithm can enhance the trust of cluster formation followed by malicious node removal from cluster head or member selection.","PeriodicalId":388309,"journal":{"name":"2013 Tenth International Conference on Wireless and Optical Communications Networks (WOCN)","volume":"116 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120833899","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}

{"title":"SIP-based Interactive Voice Response System using FreeSwitch EPBX","authors":"A. M. Ansari, Md. Faisal Nehal, M. Qadeer","doi":"10.1109/WOCN.2013.6616224","DOIUrl":"https://doi.org/10.1109/WOCN.2013.6616224","url":null,"abstract":"Accessing information during a call without having to open up a web browser in a phone is not only easier but also efficient in time-constraint situations. To achieve this, we have implemented an Interactive Voice Response System (IVRS) for SIP-based phones. Telecommunication services plays a vital role in exchange of information. Although this system is limited to SIP-based phones, we propose a general IVRS that can be implemented for a regular network operator.","PeriodicalId":388309,"journal":{"name":"2013 Tenth International Conference on Wireless and Optical Communications Networks (WOCN)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126110723","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}

{"title":"Cursor CAPTCHA — Implementing CAPTCHA using mouse cursor","authors":"V. A. Thomas, Karanvir Kaur","doi":"10.1109/WOCN.2013.6616188","DOIUrl":"https://doi.org/10.1109/WOCN.2013.6616188","url":null,"abstract":"With the growing use of Internet and its services, a large number of organizations are making use of it to provide and seek information of the people using those services. This has raised the chances of attacks on such services by interrupting them sending multiple requests to the servers providing these services programmatically. CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) provides a way to differentiate users into humans and bots, or computer programs. This paper includes a new technique that utilizes image from custom mouse cursors and outperforms some most popular CAPTCHA techniques such as Text - based CAPTCHAs and previous Image - based CAPTCHAs.","PeriodicalId":388309,"journal":{"name":"2013 Tenth International Conference on Wireless and Optical Communications Networks (WOCN)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127268075","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}

{"title":"Design and implementation of numerical controlled oscillator on FPGA","authors":"Nehal. A. Ranabhatt, Sudhir Agarwal, R. K. Bhattar, P. Gandhi","doi":"10.1109/WOCN.2013.6616221","DOIUrl":"https://doi.org/10.1109/WOCN.2013.6616221","url":null,"abstract":"This paper represents Design and Implementation of Numerical Controlled Oscillator on StratixIII FPGA. In this Design output frequency of Numerical controlled Oscillator is User Controllable. This Design will later used to implement Modulation and Demodulation on StratixIII FPGA.","PeriodicalId":388309,"journal":{"name":"2013 Tenth International Conference on Wireless and Optical Communications Networks (WOCN)","volume":"822 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117055689","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}

{"title":"Advanced face recognition system using Fourier Optics and Neural Networks","authors":"M. S. Natheem, R. Narayanan, P. N. Nagaiyan","doi":"10.1109/WOCN.2013.6616259","DOIUrl":"https://doi.org/10.1109/WOCN.2013.6616259","url":null,"abstract":"Conventional pattern recognition uses wavelet method which can identify facial pattern but it is restricted to recognition of unmasked and fully exposed faces. Added this process is more time consuming. To overcome these limitations this system is designed in the light of Fourier Optics and Neural Networks. The system uses an advanced optical Fourier plane correlator for (real time) face recognition and feature extraction. Photographs are captured in real time and are applied as input to the system, which are compared with images from database in near light speed by the Fourier plane correlator. Applications include Airport security, Rail road security, Security at Malls and other places where people congregate together.","PeriodicalId":388309,"journal":{"name":"2013 Tenth International Conference on Wireless and Optical Communications Networks (WOCN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130656921","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}

{"title":"Design of cell phone operated robot using DTMF for object research","authors":"Manish Kumar, Nikita Kaushal, Harish Bhute, Mukesh Kumar Sharma","doi":"10.1109/WOCN.2013.6616244","DOIUrl":"https://doi.org/10.1109/WOCN.2013.6616244","url":null,"abstract":"In recent years, there are development of robotics and communication on a large scale. Here we are using both the technologies together. Our robot is controlled by cell phone by DTMF technology through this we can make robot move in desire direction by touchpad. This robot can be make more useful by adding applications to it here we are using some sensor which can detect object and we are adding a robotic arm to the robot which can pick & place object but the decision to pick object or not will taken by operator by giving reply of message sent by GSM module and it will also give information about the object to operator about the metallic property of the object which is tested by metal detector coil fixed in arm. This is how we can use this robot for research purpose in different field by further manipulation in programming it can use accordingly.","PeriodicalId":388309,"journal":{"name":"2013 Tenth International Conference on Wireless and Optical Communications Networks (WOCN)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114634140","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}