http://localhost:8080/xmlui/handle/123456789/1062 2026-04-26T08:14:37Z 2026-04-26T08:14:37Z Venu Madhav, T. Sarma, N.V.S.N. http://localhost:8080/xmlui/handle/123456789/3335 2025-06-12T09:44:56Z 2012-01-01T00:00:00Z

Title: Energy Efficient Cluster Routing Protocol for Heterogeneous Wireless Sensor Networks Authors: Venu Madhav, T.; Sarma, N.V.S.N. Abstract: In this paper, a new routing protocol for heterogeneous networks with improved clustering strategies has been developed. Energy Efficient Stable Election Protocol(EE-SEP) is proposed which has the impact on network lifetime, network stability and cluster heads formation in every round. Simulation results show that the proposed algorithm outperformed SEP and Low Energy Adaptive Clustering Hierarchy (LEACH) in all the factors considered when two different topologies with advanced nodes and their energies taken into consideration. Description: NITW

2012-01-01T00:00:00Z Velagapudi, Pranith Eravatri, Bhanu Charan Mantri, Mourya Bharadwaj Mani, V.V. http://localhost:8080/xmlui/handle/123456789/3200 2025-02-06T09:29:58Z 2014-01-01T00:00:00Z

Title: Performance analysis of various IEEE 802.15.4 PHYs under Rayleigh fading channel Authors: Velagapudi, Pranith; Eravatri, Bhanu Charan; Mantri, Mourya Bharadwaj; Mani, V.V. Abstract: IEEE 802.15.4 is a set of standards that specify the physical layer (PHY) and medium access layer (MAC) of Zigbee wireless network protocol. Zigbee protocol is predominantly applied in applications that require low power consumption, low data rate and ultra-low complexity. IEEE 802.15.4 specifies three frequency bands of operation: 868 MHz, 915 MHz and the 2.4GHz unlicensed industrial, scientific and medical (ISM) band. In the present paper, we discuss implementation of the physical layer at 858,915MHz and 2.4GHz bands using Direct Sequence Spread Spectrum (DSSS) technique and also analyze its performance under Rayleigh fading channel, whose characteristics are exhibited by real-time channels. Implementation part includes the design of transceiver and performance analysis is done by comparing bit error rate (BER) of the transceiver with signal to noise ratio (SNR). Description: NITW

2014-01-01T00:00:00Z Kodali, Ravi Kishore Gundabathula, Satya Keshav Boppana, Lakshmi http://localhost:8080/xmlui/handle/123456789/3192 2025-02-06T09:12:18Z 2014-01-01T00:00:00Z

Title: Multi level secure LEACH protocol model using NS-3 Authors: Kodali, Ravi Kishore; Gundabathula, Satya Keshav; Boppana, Lakshmi Abstract: Secure Communication has become an important aspect in wireless sensor network applications such as military, medical and industrial fields. The nodes in WSN have limited computational ability and limited energy. These device constraints dictate the choice of various crypto primitives for the security model. This work considers a stream cipher algorithm, RC-4, which is easy to implement on the sensor devices and fast enough and hence it is chosen for the performance evaluation of multi level secure LEACH. In general, the RC-4 uses a static key for the encryption and decryption processes. This static key is replaced by a dynamic key, which is computed using the Toeplitz hash function in making the security model further sturdier. Also a multi-level LEACH protocol model is developed using NS-3 simulation platform to evaluate the overheads associated with the proposed security model. Description: NITW

2014-01-01T00:00:00Z S.K.L.V, Sai Prakash Reddy, Kondapalli S Rami http://localhost:8080/xmlui/handle/123456789/3190 2025-02-06T09:08:35Z 2014-01-01T00:00:00Z

Title: Firefly inspired energy aware cluster based tree formation in WSN Authors: S.K.L.V, Sai Prakash; Reddy, Kondapalli S Rami Abstract: —Tree formation in wireless sensor networks is an important phase for a number of functions like synchronization, data aggregation and data transmission. Developing efficient techniques for tree formation has been an area of study in the recent past. Cluster based tree formation is considered to be an efficient solution but almost all the cluster based techniques are either centralized or energy unaware. A firefly inspired energy aware cluster based tree formation is proposed that is decentralized, reduced number of clusters as well as energy aware. The proposed algorithm distributes the cluster head role uniformly among the nodes so that the energy drain factor shall be distributed and no node is completely drained staying as cluster head for longer duration. This process helps the network to stay connected for a longer duration minimizing the partitioning problem and thus increases the network lifetime. The performance analysis of the proposed distributed energy aware cluster based tree formation along with the number of cluster heads for each iteration is presented. Description: NITW

2014-01-01T00:00:00Z