SDM College of Engineering and Technology

About: SDM College of Engineering and Technology is a based out in . It is known for research contribution in the topics: Diesel fuel & Combustion. The organization has 350 authors who have published 351 publications receiving 2399 citations.

Impact of code rate and improvisation of the reconstructed image for CODEC

Abstract: Present day modern hand held communicating devices rely on forward error correction techniques for their proper functioning. Most digital communication systems nowadays convolutionally encode the transmitted data to compensate for Additive White Gaussian Noise (AWGN), fading of the channel, quantization distortions and other data degradation effects. For its efficient performance the Viterbi algorithm has proven to be a very practical algorithm for forward error correction of convolutionally encoded messages. 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 Viterbi decoder for image transmission applications. In this paper different code rates such as 1/2, 2/3 and 3/5 have been simulated using different constraint lengths as well as different generator polynomials for the image input. For the lesser BER reconstructed image can be processed to get lesser MSE. All the simulations are conducted in MATLAB over AWGN channel.

Comparative performance analysis of power systems

Abstract: The increased power demand has led to lengthier, complex interconnections of power systems. Erection of new transmission lines is avoided due to environmental and economic reasons, hence increased power transfer in the existing system. To monitor and control of power system, continuous performance analysis is required; also FACTS devices helps in improving system performance. In this work, various performance analysis of SMIB and IEEE five bus systems by conventional methods are done using Mi-Power software, Simulink and PSAT tool of MATLAB software; and compared the results. A case study of the simulation is carried out with IEEE standard 5-bus system. The outcome of this work helps to enhance the security and reliability of the power system.

Hardware implementation and performance comparison of normal basis multiplication methods over GF (2 m )

Abstract: Elliptic curve cryptography (ECC) and error control coding techniques over binary extension fields require efficient computation of finite field multiplication. Polynomial basis and normal basis are widely used in binary fields. Since inversion can be computed by performing repeated multiplication and squaring can be computed by performing only one cyclic shift operation using normal basis, it is considered as more efficient than polynomial basis. This research paper presents hardware implementation and performance comparison of various normal basis multiplication methods in terms of space and time complexities.

Time-Frequency Analysis of Kannada Phonetics

Abstract: This paper presents phonetics of Kannada language and their classification based on time-frequency analysis. Each distinct sound of speech called phoneme is produced by changing the shape of the vocal tract tube. The resonances of the vocal tract tube called formant frequencies are responsible for producing different phonemes. It is observed that vowels (Swaragalu in Kannada) have clear formant structure and they are about 3 to 5 formant frequencies of significance below 5000 Hz. They are characterized by having high energy, maximum airflow and periodicity and are classified based on the location of formant frequencies. Consonants (Vyanjanagalu in Kannada) are classified based on voicing, place of articulation and manner of articulation. Time-frequency analysis reveals that there are totally 37 distinct phonemes in Kannada language.