International Journal of Advanced Networking and Applications

3070-3083

Authors: Er.A.S.Kang, Prof.Renu Vig

The present paper puts its focus on the design of an efficient prototype Filter bank in the context of Filter Bank based Multi carrier Transmission. A benefit of the chosen technique is that,a near perfect reconstruction polyphase filter can be designed with the aid of closed form expressions with a slight adjustment in parameters of interest. The entire performance of the filters designed is analyzed and evaluated using Offset-OQAM for FBMC system. Optimization or performance tradeoff is readily obtained by appropriately adjusting those free parameters. Whatsoever results are obtainable are presented for useful analysis to the rf design engineers working in the domain of multi rate signal processing for wireless communication. An attempt on NPR Filter bank has also been made and to ensure the acceptable performance of Modified and Enhanced FBMC, computational complexity, system delay and transmission burst length need to be minimized/reduced. A single prototype filter designed may not provide the best performance in terms of all the metrics. The effect of Stop band attenuation on the edges of Magnitude and Frequency responses has been carefully studied. Different Lp, K and M factors have been considered during simulations and the results have been compared analytically.

3090-3092

Authors: Mrs.V.Perathu Selvi, Ms.K.Raja Sundari, Mrs.P.J.Beslin Pajila

While relentless spammers exploit the established trust relationships between account owners and their friends to efficiently spread malicious spam, timely detection of compromised accounts is quite challenging due to the well established trust relationship between the service providers, account owners, and their friends. In the proposed system, we propose identification of same user in different social network sites (SNS) and elimination of fake user account from the SNS. This is achieved via checking screen name, photo, friends list, gender, location, birthday and school / college education and working place. Using these behavioral features of user social behavior, it identifies the fake user. In the modification process, apart from the removal of anonymous accounts we also add on identification Friends based on user’s mind set / Interest. We are monitoring Users Interest, Likes posted by the user and Android based mobility pattern analysis. Best friends are identified and security layer is enveloped by monitoring user’s behavior pattern. Vulgar worded posts are removed and the user is terminated in case of misbehavior.

3097-3102

Authors: R. Abilasha

The Global Positioning System (GPS) is a reliable, versatile, generally available and comparatively accurate positioning technology, able to operate anywhere across the globe. Nevertheless, the most severe limitation of GPS performance will still remain – the accuracy of positioning deteriorates very rapidly when the user receiver loses direct view of the satellites, which typically occurs indoors or in severely obstructed urban environments. In such environments, the majority of receivers do not function at all, and even the high-sensitivity receivers have difficulty in providing coordinates with sub-decameter level accuracies. A new terrestrial radio frequency (RF)- based distance measurement technology, known as ‘Locata’, has now overcome the technical challenges required to create “a localized autonomous terrestrial replica of GPS”. This paper describes some of the technical aspects of this Australian technology and discusses the possible role Locata can play as part of the National Positioning Infrastructure. Locata has developed a new type of antenna which allows industrial-grade, centimeter-level positioning indoors by mitigating multipath by forming and pointing tight beams at the Locata transmitters, significantly reducing the effects of multipath corruption of the direct positioning signal. This paper briefly describes Locata tests conducted in a number of conditions, including indoors, at an open-cut mine, airborne flight testing, and on Sydney Harbour. A new system can be proposed that will be composed of locata along with femtocell to provide users both GPS and GSM services.