S. V. Viraktamath

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Monitoring of street lights and controlling is of utmost importance in developing country like India to reduce the power consumption. This paper presents a street light control system which combines various technologies: a timer, Liquid Crystal Display (LCD), a statistics of traffic flow magnitude, a photosensitive detector (LDR), infrared photoelectric(More)
Classical Viterbi algorithm (HOVA) and Soft Output Viterbi Algorithms (SOVA) are used for error correction in many applications. Among FEC schemes, convolutional encoding and Viterbi decoding are the most popular because of their powerful coding-gain performances. In this paper the performance analysis of Convolutional encoder and hard decision Viterbi(More)
Digital images contain large amount of information that need evolving effective techniques for storing and transmitting the ever increasing volumes of data. Image compression addresses the problem by reducing the amount of data required to represent a digital image. Discrete Cosine Transformation (DCT), quantization and entropy encoding are the steps in the(More)
Power wastage is one of the most serious problems at present. One of the major challenges at the moment is the improvement of the present street lighting system. To control and maintain complex street lighting system more economically, various street light control systems are developed. The advances in the technologies related to wireless communication has(More)
In this paper the performance of Soft Output Viterbi decoding Algorithm (SOVA) has been discussed with the simulation results. SOVA for the various constraint lengths and for different generator polynomials are simulated and discussed. Performance of SOVA for burst and random errors are also tested. Performance evaluation in terms of error correction(More)
The most of the modern hand held communicating devices rely on forward error correction techniques for their proper functioning. Convolutional coding and Viterbi decoding is one of the forward error correction technique used in most of the communication applications. This paper investigates the impact of code rates on the performance of hard decision(More)
An experimental comparison of a number of different source coding algorithms is carried out. The performance comparison of the Shannon, Shannon-Fano and Huffman coding for binary and tertiary has been done in this paper. Comparison of Average Lengths, Entropies and Efficiencies of code words generated by these algorithms for binary and ternary are presented.
Today’s communication system is susceptible to many types of errors and interferences. There are different types of error detection and correction mechanisms proposed by many authors. One of the important methods of error control is by means of encoding/decoding techniques at source/destination. In this context, we propose an evaluation process of(More)
Discrete cosine transform (DCT) is a widely compression technique for converting an image into elementary frequency components. However, level of quality and compression is desired, scalar multiples of the JPEG standard quantization may be used. In this paper, DCT method was applied to compress image under various level of quality. Different quantization(More)
Description of biodiversity is often cited as one of the most important actions necessary for conservation programs. There are more than 600 species of stingless bees spread over the Tropical regions of the world; though for various species, little is known about their biology and taxonomy. We sampled bees from feral colonies from various regions of India(More)