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Muniraj, N. J. R.
- An Efficient Cognitive Radio Spectrum Sensing Method for OFDM
Abstract Views :160 |
PDF Views:3
Authors
Affiliations
1 Department of ECE, Arunai Engineering College, Tiruvannamalai, Tamilnadu, IN
2 Department of ECE, Karpagam Engineering College, Coimbatore, Tamilnadu, IN
3 Department of ECE, Karpagam Engineering College, Coimbatore, Tamilnadu, IN
1 Department of ECE, Arunai Engineering College, Tiruvannamalai, Tamilnadu, IN
2 Department of ECE, Karpagam Engineering College, Coimbatore, Tamilnadu, IN
3 Department of ECE, Karpagam Engineering College, Coimbatore, Tamilnadu, IN
Source
Wireless Communication, Vol 2, No 1 (2010), Pagination:Abstract
Due to increasing number of wireless communications and devices, the limited radio spectrum is heavily congested. So, the spectrum crowding problem is occurred. To avoid the spectrum crowding problem, we have to utilize the limited radio spectrum in an efficient way. The cognitive radio is an attractive solution for the spectrum crowding problem. The Orthogonal Frequency Division Multiplexing is selected as a physical layer for transmission in cognitive radio. This paper proposes the cognitive radio technology for OFDM for efficient utilization of radio spectrum.Keywords
Cognitive Radio, OFDM, Spectrum Sensing, Dynamic Spectrum Access, Spectrum Scarcity, Software Defined Radio.
- Modified DA-DWT Based 3D DWT Architecture for Medical Image/Video Processing
Abstract Views :140 |
PDF Views:3
Authors
Affiliations
1 Karpagam University, Coimbatore, IN
2 Electronics and Communication Engineering Department, Karpagam College of Engineering, Coimbatore, IN
3 Mount Zion Engineering College, Kerala, IN
1 Karpagam University, Coimbatore, IN
2 Electronics and Communication Engineering Department, Karpagam College of Engineering, Coimbatore, IN
3 Mount Zion Engineering College, Kerala, IN
Source
Digital Image Processing, Vol 3, No 18 (2011), Pagination: 1148-1152Abstract
This work explores the implementation of 3Dimentional DWT algorithm on FPGA and ASIC for video coding, several architectures have been proposed such as convolution based, lifting based and B-spline-based. Advances in medical imaging, video coding and telecommunication systems require efficient speed, resolution and real-time memory optimization with maximum hardware utilization. We propose a modified 3D DWT architecture based on 5/3 lifting scheme architecture, this filter gives better compression ratio. The architecture uses a new and fast lifting scheme which has the ability of performing progressive computations by minimizing the buffering between the decomposition levels. The architecture is modeled in verilog HDL and simulated by Modelsim. The 3D DWT architecture is synthesized in Xilinx tool and verified for the functionality. The 3D DWT has been implemented in Virtex 5 FPGA.Keywords
3D-DWT, FPGA, ASIC.- Review Paper on 3D–DWT for Video Coding
Abstract Views :141 |
PDF Views:1
Authors
Affiliations
1 Karpagam University, Coimbatore, IN
2 Electronics and Communication Engineering Department, Karpagm College of Engineering, Coimbatore, IN
3 Mount Zion Engineering College, Kerala, IN
1 Karpagam University, Coimbatore, IN
2 Electronics and Communication Engineering Department, Karpagm College of Engineering, Coimbatore, IN
3 Mount Zion Engineering College, Kerala, IN
Source
Digital Image Processing, Vol 3, No 13 (2011), Pagination: 798-805Abstract
In this paper a review on different VLSI Architecture for lifting-based Inverse and Forward wavelet transform and mathematical modeling of 3D has been discussed. Video delivery through heterogeneous networks over new multimedia devices of varying capabilities requires scalable coding. In recent years, scalable video coding using the 3-D wavelet transform has gained a lot of attention. Wavelet based 3-D video coding systems use spatial-temporal analysis of a group of frames (GOF) followed by coefficients encoding.Keywords
3D-DWT For Video Coding, MATLAB Modeling For 3D-WT, Hardware Modeling And Implementation For 3D-DWT.- Image Registration in Digital Ophthalmic Images for Spatial Filter in Clinical VEP Signal
Abstract Views :146 |
PDF Views:2
Authors
Affiliations
1 Karpagam University, Coimbatore, IN
2 Department of ECE, Karpagam College of Engineering, Coimbatore, IN
1 Karpagam University, Coimbatore, IN
2 Department of ECE, Karpagam College of Engineering, Coimbatore, IN
Source
Digital Image Processing, Vol 3, No 9 (2011), Pagination: 563-566Abstract
The visually evoked potential (VEP) is the measure of cortically evoked electrical activity that provides information about the integrity of the optic nerve and the primary visual cortex. Visual evoked potentials (VEP) are very weak and noisy signals. For this reason, powerful extraction tools are needed to improve their clinical use. In this paper, I present the adaptive noise canceller scheme where the input signals represent successive recorded VEP. To test the effectiveness of the method and compare their performance to conventional averaging traditionally used in hospitals. As compared to adaptive linear filtering or conventional averaging techniques, no assumptions are required on the VEP responses such as the stationarity of the signal and the white Gaussian nature of the background. The results obtained show that non-linear filtering performs efficient VEP extraction based on just a few single responses. This is very significant in terms of saving time especially when recording data from elders and children. The challenge of image registration (the process of correctly aligning two or more images accounting for all possible source of distortion) is of general interest in image processing.Keywords
Electro Diagnostic Instrument, VEP Stimulator, Image Registration, Adaptive Filtering, Averaging Technique.- Modeling and Performance Comparison of Nanobiosensor for Automated Disease Detection
Abstract Views :141 |
PDF Views:4
Authors
Affiliations
1 Karpagam University, Coimbatore, IN
2 Electronics and Communication Engineering Department, Karpagam College of Engineering, Coimbatore, IN
1 Karpagam University, Coimbatore, IN
2 Electronics and Communication Engineering Department, Karpagam College of Engineering, Coimbatore, IN
Source
Biometrics and Bioinformatics, Vol 3, No 6 (2011), Pagination: 292-298Abstract
Automated disease detection and drug dosing is one of the most advanced emerging medical applications domain. With the advances in nanotechnology, nanobio sensors are being used to detect diseases. System level design and validation of automated disease detection unit is one of the challenging areas of study. In this paper, we develop a software based experimental setup for performance analysis of nanobio sensors for disease detection. Blood samples and fluids in human body are modeled using appropriate parameters and a mathematical model for nanobiosensor is developed. Performances of three nanobiosensors are analyzed and its properties are compared. Simulations of nanobiosensors are carried out using nanohub.org and Matlab. The results obtained are analyzed with simulation results in nanohub. The developed sensors are suitable for automated drug delivery unit.Keywords
Nanobio Sensors, Disease Detection, Nanowire, Mathematical Modeling.- Novel Approach for Nano-Bio Sensor Modelling for Automated Disease Detection
Abstract Views :147 |
PDF Views:0
Authors
Affiliations
1 Karpagam University, Coimbatore, IN
1 Karpagam University, Coimbatore, IN
Source
Research Cell: An International Journal of Engineering Sciences, Vol 6 (2012), Pagination: 1-24Abstract
In this paper, the mathematical models required to describe the functionality of nanodevices have been reviewed. Based on these mathematical models sensor equivalent circuits have been developed. An experimental setup is developed to analyze the characteristics of IS Field Effect Transistor (ISFET), nanowire and nanosphere devices. The impact of geometrical properties on device performance is estimated based on the experimental setup. Settling time and surface analyte concentration graphs obtained using the experimental setup is used in designing a nanobio sensor for disease detection. Based on the test results, a mathematical model has been developed in Matlab to model nanodevices. Three different iterations of sensor models are carried out based on the results obtained. Curve fitting techniques are adopted to generalize the developed sensor model using Savitzky-Golay Filter (SG Filter). The sensors modeled can be used for automated drug detection and delivery unit.Keywords
ISFET, Savitzky-Golay Filter, Curve Fitting Techniques, Nanomaterials.Full Text
- Efficient Approach for Delay Analysis in Digital Circuits
Abstract Views :183 |
PDF Views:2
Authors
Affiliations
1 Department of ECE, Tejaa Shakthi Institute of Technology for Women, Coimbatore, Tamilnadu-641659, IN
1 Department of ECE, Tejaa Shakthi Institute of Technology for Women, Coimbatore, Tamilnadu-641659, IN
Source
Biometrics and Bioinformatics, Vol 10, No 2 (2018), Pagination: 37-40Abstract
In this article, a fully digital system to analysis setup/hold time delays in digital circuits is presented. The digital circuit classified as two types: 1.combinational circuit, 2.sequentialcircuit.The proposed system benefits from easy to modify design, lowpower, smallarea, and simplecircuits. Delay element in digital system is timer. Her delay is propagation and contamination delay and etc. Delay analyzed in Xilinx ISE 10.1 software and ncsim in cadence tool,
It is implemented in very large scale integration (VLSI).here I am using ISCAS 85/89 benchmark circuits. Analysis and compare the delay in combinational circuit and sequential circuit. The system continuously monitor and analysis any setup/hold time delay in the combinational/sequential data path.
Keywords
Combinational and Sequential Circuits, Hold Time, Setup Time, Timing Analysis, Digital VLSI Circuit.References
- T. Okumura and M. Hashimoto, “Setup time, hold time and clock-to-Q delay computation under dynamic supply noise,” in Proc. IEEE CICC, Sep. 19–22, 2010, pp. 1–4.
- M. Hashimoto, J. Yamaguchi, and T. Sato et al., “Timing analysis considering temporal supply voltage fluctuation,” in Proc. Asia and South Pacific Design Automation Conf. (ASP-DAC 2005), Jan. 18–21, 2005, vol. 2, pp. 1098–1101 .
- Y.-S. Su, W.-K. Hon and C.-C. Yang et al., “Clock skew minimization in multi-voltage mode designs using adjustable delay buffers,” IEEE Trans. Comput.Aided Des. Integer. Circuits Syst., vol. 29, no. 12, pp. 1921–1930, Dec. 2010.
- C.-C. Kao and K.-C. Lin, “Clock skew minimization with adjustable delay buffers restriction,” in Proc. IEEE Int. Symp. Next-Generation Electron. (ISNE), Feb. 25–26, 2013, pp. 321–324.
- W.-P. Tu, S.-H. Huang and H.-H. Lu, “PVT-variations-tolerant clock design using self-correcting adjustable delay buffers,” in Proc. 2014 Int. Symp. Next-Generation Electron. (ISNE), May 7–10, 2014, pp. 1–2.
- K.-H. Lim, D. Joe, and T. Kim, “An optimal allocation algorithm of adjustable delay buffers and practical extensions for clock skew optimization in multiple power mode designs,” IEEE Trans. computer.-Aided Des. Integer. Circuits Syst., vol. 32, no. 3, pp. 392–405, Mar. 2013.
- K. Chae and S. Mu, “A dynamic timing error prevention technique in pipelines with time borrowing and clock stretching,” IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 61, no. 1, pp. 74–83, Jan. 2014.
- V. S.Melikyan, A.S.Sahakyan, and A. H.Shishmanyan etc.,” Data-clock setup and hold times margins correction method in high speed serial links,” in Proc. Computer. Sci. Inf. Technol. (CSIT), Sep. 23–27, 2013, pp. 1–5.
- M. Sasaki, N. N. M. Khan, and K. Asada, “A circuit for on-chip skew adjustment with jitter and setup time measurement,” in Proc. IEEE Asian Solid State Circuits Conf. (A-SSCC), Nov. 8–10, 2010, pp. 1–4.
- Vehicle Location Estimation by Dead Reckoning Using Inertial Measurement Unit Sensor in MEMS
Abstract Views :198 |
PDF Views:1
Authors
S. Abinaya Shivani
1,
V. Nivetha
1,
J. Mubeena
1,
K. Roshni Rajan
1,
R. Prabakaran
1,
N. J. R. Muniraj
2
Affiliations
1 Department of ECE, Tejaa Shakthi Institute of Technology for Women, Coimbatore, Tamilnadu-641659, IN
2 Tejaa Shakthi Institute of Technology for Women, Coimbatore, Tamilnadu-641659, IN
1 Department of ECE, Tejaa Shakthi Institute of Technology for Women, Coimbatore, Tamilnadu-641659, IN
2 Tejaa Shakthi Institute of Technology for Women, Coimbatore, Tamilnadu-641659, IN
Source
Networking and Communication Engineering, Vol 10, No 2 (2018), Pagination: 28-30Abstract
This paper presents estimation of vehicle location by accurate determination of its attitude using low cost MEMS inertial measurement unit (IMU) sensor. This comprises of tri-axial gyroscope and a tri-axial accelerometer. Because of drift problem low-cost MEMS gyro cannot be used. An accelerometer is used to correct this drift problem. However this is not possible because accelerometer measurements are corrupted by external accelerations produced due to vehicle movements. In this paper we show that vehicle kinematics allow the removal of external acceleration from the lateral and vertical axis accelerometer measurements. A adaptive Filter is designed for the conjunction of accelerometer and gyroscope to accurately determine the attitude of vehicle. The proposed filter is able to maintain sub-degree estimation accuracy even under severe and prolonged dynamic condition.
Keywords
Attitude Estimation, Vehicle Attitude, MEMS IMU, External Acceleration.References
- V.Agarwal, H.Arya, S. Bhakthavatsala, ‘ Design and development of a Real-time DSP and FPGA- Based integrated GPS-INS system for compact and Low Power Application’ IEEE Transaction on a aerospace and electronic system, Vol. 45, No.2, April 2009.
- Jiwon J.oh and Seibum B.Choi, Member, IEEE, Dec 12 ‘Vehicle velocity observer design using 6-D IMU and Multiple-observer approach’ IEEE Transaction on Intelligent Transportation System, Vol. 13, No.4.
- Hamad Ahmed, M. Tahir, ‘Terrain based vehicle localization using low cost MEMS IMU sensor’ IEEE 83rd Vehicle Technology Conference, (VTC spring) May 2016.
- Farid Gulmammadov, ‘Analysis, Modeling and Compensation of Bias Drift in MEMS Inertial Sensors’ IEEE 4th International Conference, (RAST) June 2009.
- D.Chattaraj, K.B.M.Swamy and S.Sen, ‘Design and Analysis of Dual Axis Accelerometer’ Physics of Semiconductor Devices, 2007.
- Zenming zaho, weidong xiang, Paul Richardson, ‘Vehicle lateral Control and Yaw Stability Control through Differential Braking’ Industrial Electronics, 2006 IEEE International Symposium, 9-13 July 2006.
- J.Tiemen, J.Schmalzen, R.Krchnavek, ‘Design of a MEMS based, 3-axis accelerometer smart sensor’ Sensors for Industry Conference, 2002. 2nd ISA/IEEE, 19-21 Nov 2002.
- Sohiel azimi, Abdul QaderAshan Qureshi, Fatmeh Edalatfar, ‘Design, Fabrication and Characterization of a high performance MEMS accelerometer’ SENSORS, 2016 IEEE 30 Oct- 3 Nov 2016.
- Crack Detection Using Image Processing Algorithm in MATLAB
Abstract Views :192 |
PDF Views:3
Authors
Affiliations
1 Department of ECE, Tejaa Shakthi Institute of Technology for Women, Coimbatore, Tamilnadu-641659, IN
1 Department of ECE, Tejaa Shakthi Institute of Technology for Women, Coimbatore, Tamilnadu-641659, IN
Source
Biometrics and Bioinformatics, Vol 10, No 3 (2018), Pagination: 56-57Abstract
Welding structures are nowadays used in many applications such as machineries in industry and in the form of bridges in civil structures. Crack in those structures results in loss of structural integrity which reduces a efficiency of a system in which the structure is used. Hence crack detection of a structure before implementation is important to reduce a defect. Here adaptive changing and morphology is used to detect a crack in structures.