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Karīmnagar, India

Palagiri A.H.V.,VITS | Makkena M.L.,Jawaharlal Nehru Technological University | Chantigari K.R.,Nalla Narsimha Reddy Group of Institutions
Advances in Intelligent Systems and Computing | Year: 2016

SONAR and RADAR makes use of multiple beamforming systems. A novel Onboard Digital Beamforming (DBF) system suitable for various applications is implemented with mixed signal design of Sigma Delta ADC architecture. FPGA is configured as a Reconfigurable On-chip Sigma Delta ADC and analyzed for a multichannel beamforming system with Spartan 6, Virtex 4, and Virtex 6 FPGA. With the architectural variation, major advantages can be seen in SONAR beamforming and similar array processing applications. © Springer India 2016. Source

Pakanati C.,P.A. College | Padmavathamma M.,Sri Venkateswara University | Reddy N.R.,VITS
Proceedings - 2015 IEEE International Conference on Computational Intelligence and Communication Technology, CICT 2015 | Year: 2015

Internet has to support applications with different requirements. Reliability is the essential requirement for file transfer whereas delay and jitter are the essential requirements of streaming applications. All layers contribute to the successful operation of the Internet. But the layer which has direct impact on the user of the service is the transport layer. TCP is robust protocol tuned to wired networks and is used by many applications. High bandwidth applications like streaming video and on-line game playing are using UDP as the transport protocol. Use of UDP by these applications is considered as threat to the stability of the Internet. TCP friendly rate control (TFRC) is the transport protocol which provides smooth variation of throughput and which is suggested for streaming applications. TFRC is on the standardization process of Internet Engineering Task Force (IETF). But before TFRC is accepted by the Internet community it has to be tested thoroughly both independently and also it's interoperation with TCP and UDP. This paper does the performance comparison of transport protocols TCP, UDP and TFRC. The results show that TFRC has to be fine-tuned before it is used in the Internet. NS-2.35 is used as Network simulator. © 2015 IEEE. Source

Arya L.D.,S.G.S.I.T.S. | Singh P.,VITS | Titare L.S.,Government Engineering College
International Journal of Electrical Power and Energy Systems | Year: 2012

This paper presents an anticipatory load shedding methodology which determines optimum load shedding at selected buses under emergency based on voltage stability. Accurate load shedding saves loss of revenue to power utility in addition to avoiding voltage instability problem. The buses for load shedding have been selected based on the sensitivity of minimum eigenvalue of load flow Jacobian with respect to load shed. A computational algorithm for minimum load shedding has been developed using DE. The algorithm accounts inequality constraints not only in present operating condition but also for predicted next interval load. Developed algorithm has been implemented on IEEE 6-bus and 14-bus test systems. Results have been compared with those obtained using particle swarm optimization (PSO) and its variant based on statistical inference. © 2012 Elsevier Ltd. All rights reserved. Source

Arya L.D.,S.G.S.I.T.S. | Singh P.,VITS | Titare L.S.,Government Engineering College
International Journal of Electrical Power and Energy Systems | Year: 2012

This paper presents an algorithm for anticipatory control of load bus voltages. The algorithm optimizes a set of reactive power control variables and maximizes reactive reserve available at generating buses. Voltage dependent reactive power limits have been accounted. The optimal settings of reactive power control variables have been obtained for next interval predicted loading condition. These optimized settings satisfy the operating inequality constraints in predicted load condition as well as in present base case loading conditions. A population based differential evolution strategy has been used for optimization. Results obtained have been compared with those obtained using another population based technique known as PSO. © 2011 Elsevier Ltd. All rights reserved. Source

Sree V.K.,VJIT | Rao P.S.,VITS
Research Journal of Applied Sciences, Engineering and Technology | Year: 2012

The quest of providing more secure identification system has lead to rise in developing biometric systems. Biometrics such as face, fingerprint and iris have been developed extensively for human identification purpose and also to provide authenticinput to many security systems in the past few decades. Dorsal hand vein pattern is an emerging biometric which is unique to every individual. In this study principal component analysis is used to obtain Eigen vein patterns which are low dimensional representation of vein pattern features. The extraction of the vein patterns was obtained by morphological techniques. Noise reduction filters are used to enhance the vein patterns. Principle component analysis is able to reduce the 2-dimensional image database into 1-dimensional Eigen vectors and able to identify all the dorsal hand pattern images. © Maxwell Scientific Organization, 2012. Source

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