Informatics Publishing Limited

K. Kowsalya ¹, S. Sabitha ¹

Affiliations
1 Department of Communication and Networking, Adhiparasakthi Engineering College, Melmaruvathur, IN

Abstract

In wireless sensor network, Admission Control (AC) is one of the key traffic management mechanisms that should be installed to afford Quality of Service (QoS) support for real-time traffic. A scheduling scheme used by each node in the sensor network plays a vital role for efficient data transfer in the network.  Scheduling link transmissions in a wireless network so as to enhance one or more of the performance objectives (e.g. throughput, delay, or energy) has been the area of much interest over the previous several decades. To avoid the interference between the transmitted packets in the nodes of the networks we use the interference modelling in our system. In our proposed work we study the various scheduling algorithm which enhance the system parameters such as throughput, channel utilization and reduce the delay and packet loss ratio in sensor environment. We also analyse the packet collision rate in various scheduling algorithm.

Keywords

Admission Control, Scheduling, Wireless Sensor Networks, Throughput, Channel Utilization, Interference Modelling, Hybrid CDMA, Bandwidth.

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M. Ramya ¹, K. Kowsalya ¹, V. Ramesh ¹

Affiliations
1 Department of Computer Science, Klasalingam Institute of Technology, Krishnan koil, IN

Abstract

The transmission of a traffic flows with a certain bandwidth demand over a single network path is either not possible or not cost-effective. In these cases, it is veritably periodic usable to improve focus the network's bandwidth appliance by breaking the traffic flow upon multiple qualified paths. Using multiple paths for the equivalent traffic flow increases the certainty of the network, it absorbs deluxe forwarding resources from the network nodes and also it overcomes link failure provide security. In this paper, we illustrate several problems related to splitting a traffic flow over multiple paths while minimizing the absorption of forwarding resources mitigates failures and implementing security.

Keywords

RMO (Routing with Minimum Overhead, DMO (Decomposition with Minimum Overhead), MPC (Multiple Routing Configuration), OSPF (Open Shortest Path).

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K. Kowsalya ¹, V. Ramesh ¹

Affiliations
1 Department of Computer Science and Engineering, Kalasalingam Institute of Technology, Krishnan Koil, IN

Abstract

Cloud computing is an economical and effective solution for sharing group resource among cloud users. Unfortunately, sharing data in a multi-owner manner while protect data and identity privacy from an un trusted cloud is still a challenging issue, due to the recurrent change of the membership.The major aims of this method a secure multi-owner data sharing scheme.That is any user in the group can securely share data with others by un trusted cloud. Moreover, the real identities of data owners can be exposed by the group manager when disputes occur. User revocation can be achieved by a novel revocation list and no need to update the secret Keys of the remaining users.The drawback of IBE is computation over head. To overcome the drawback introduces outsourcing computation.

Keywords

Cloud Computing, Revocation, Multi Owner Data Sharing, Identity Based Encryption.

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K. Kowsalya ¹, A. Janaki ¹, D. Haripriya ¹, V. Nandhini ¹, J. Jayasudha ¹

Affiliations
1 Department of ECE, Tejaa Shakthi Institute of Technology for Women, Coimbatore, IN

Abstract

Floating point operations are used in large dynamic range applications. In a floating point unit addition is one of the most complex operation. An area efficient floating point addition unit with error detection logic is proposed in this paper. Existing error detection logics and leading zero anticipators helps to decrease the delay of the general floating point unit, but they are not area efficient. An area efficient carry select adder with error detection logic is designed by replacing RCA. Here binary to excess-1 converter is used in Carry Select Adder (CSLA) instead of ripple carry adder for carry in = 1. The proposed design is tested on XILINX simulator.

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