Papers by N S MURTI SARMA
International journal of computer applications, Jun 17, 2016
K mean clustering is a very popular clustering algorithm for clustering numerical data.. It is po... more K mean clustering is a very popular clustering algorithm for clustering numerical data.. It is popular due to its simplicity of understanding and linear algorithmic complexity measure. But it has the serious limitation of clustering numerical only data. Therefore several researchers tried to improve the k mean algorithm to cluster not only numerical but also categorical dataset. In this work an effort have been made to put forward a proposed FCV mean algorithm which is a modified version of the traditional k-mean algorithm and is able to cluster objects having mixed type attributes i.e. numerical and categorical. For categorical data fuzzy set similarity is used and for numerical data differences from maximum dissimilarity is used. Experiment shows that the mixed data are highly clustered with high accuracy compared to other approach in literature.
International Journal of Engineering Development and Research, Jun 1, 2014
Low Noise Amplifier is an electronic amplifier used to amplify possibly very weak signals. It is ... more Low Noise Amplifier is an electronic amplifier used to amplify possibly very weak signals. It is usually located very close to the detection device to reduce This active antenna arrangement is frequently used in microwave systems like GPS, because coaxial cable feedline is very lossy at microwave frequencies. An LNA is a key component which is placed at the frontend of the radio receiver circuit. Using an LNA, the effect of noise from subsequent stages of the receive chain is reduced by the gain of the LNA, while the noise of the LNA itself is injected directly into the received signal. Thus, it is necessary for an LNA to boost the desired signal power while adding as little noise and distortion as possible, so that the retrieval of this signal is possible in the later stages in the system. For low noise, the amplifier needs to have a high amplification in its first stage. The four most important parameters in LNA design are: gain, noise figure and impedance matching. The design for LNA is based mainly upon the S-parameters of a transistor.
Automatic test pattern generation in VLSI — A survey
2017 International Conference on Energy, Communication, Data Analytics and Soft Computing (ICECDS), 2017
Rapid improvement in VLSI field, it will open a new gate to the testing of the integrated circuit... more Rapid improvement in VLSI field, it will open a new gate to the testing of the integrated circuits filed. in this literature paper we reviews collection of testing methods and all the testing procedures for integrated testing. The testing useful for hierarchical testing of large scale memory applications and stuck at fault detection schemes.
Design and Implementation of ARM Intelligent Monitoring System Using Zigbee
In this paper the research method of Laboratory Intelligent monitoring System based on Zigbee is ... more In this paper the research method of Laboratory Intelligent monitoring System based on Zigbee is elaborated, and the hardware design and software design are discussed. Sensors controlling board collect the data to web server through Zigbee networks. These sensors automatically monitor the local environmental data and external material intrusion in the laboratory. Users can control the equipment in the lab through a web browser which is cross platform. The simulation results indicate that design of system is safe and convenient from local management of environmental data in laboratories.
Network on chip technology will be a major factor in future communication system which is based o... more Network on chip technology will be a major factor in future communication system which is based on intra core system, But when comes to power usage this practical NoC system consumes considerably huge power , then the Architecture of the crossbar routers will directly increases with respect to the no of intra core system . When comes to bulky systems, the average power consumption in crossbar switches relatively high. While detailing the components of the routers we found that buffers in the input terminals leads to major power consumption, when we try to remove buffers in NoC routers, the overall performance will reduce due to the bottleneck Increase. To make These Network on Chip crossbars efficiently without degradation in performance we propose a better systematic approach in the crossbar switches by incorporating virtual Memory system as a substitute of conventional register based memory, this will leads to energy efficiency with increase in overall performance. We are going to...
Interference Mitigation Techniques for Advanced Cellular Communications using MIMO Based Smart Antenna Beam forming
Wireless Communication Technology has developed many folds over the past few years. One of the mo... more Wireless Communication Technology has developed many folds over the past few years. One of the most reliable techniques to enhance the data rates is called Multiple Input Multiple Output (MIMO) wherein severa gathering mechanical assemblies are used each on the transmitter and the authority. various signs are transmitted from differing radio wires on the transmitter utilizing an equivalent repeat and segregated in space. restrictive channel estimation techniques are connected so as to condemn at the substantial effects of the medium blessing. in this paper, we look at and realize particular estimation structures for MIMO OFDM Systems such as Least Squares (LS), Minimum Mean Square Error (MMSE), Constant Modulus Algorithm (CMA) and linear Pre-coding. These techniques are therefore compared to effectively estimate the channel in MIMO OFDM Systems. There are a few versatile beam forming strategies like LMS (slightest mean square) calculation beam forming, RLS (recursive minimum square)...
In this paper, the radiation pattern of array of isotropic elements, simple dipoles and half wave... more In this paper, the radiation pattern of array of isotropic elements, simple dipoles and half wave dipole elements were simulated using the MATLAB software. The adaptive algorithm has been used to steer the main beam in the desired direction and also to suppress the sidelobes to the desired level. From the results it is shown that to achieve the desired pattern the Signal to Interference- plus- Noise, (SINR) is maximized in desired direction and minimized in the interference direction.EMI/EMC affects for this issue are under investigation.
IJIREEICE
This paper describes the performance of the Aperture Coupled Microstrip Planar Array in C-band. T... more This paper describes the performance of the Aperture Coupled Microstrip Planar Array in C-band. The basic concept of aperture coupling is to achieve the wide frequency bandwidth & low back radiation. The enhancement of the bandwidth in the present case is achieved by coupling to the microstrip antenna on one substrate from the microstrip line feed on another parallel substrate through an aperture in the ground plane, which separates the two substrates. A design procedure for aperture coupled microstrip antennas based on transmission line model is presented. The novel coaxial to microstrip line transition is devised and implemented to feed the aperture coupled microstrip antenna elements in planar array to achieve the wide impedance and pattern bandwidth. The experimental results of Return loss plot & Radiation pattern for aperture coupled microstrip planar array antenna are presented.
Device-to-device communications in long term evaluation-advanced network
2017 International Conference on Intelligent Computing and Control Systems (ICICCS)
International Journal of Engineering & Technology
The proposed work shows an innovative designing in TSMC 130nm CMOS technology. A 2.4 GHz common g... more The proposed work shows an innovative designing in TSMC 130nm CMOS technology. A 2.4 GHz common gate topology low noise amplifier (LNA) using an active inductor to attain the low power consumption and to get the small chip size in layout design. By using this Common gate topology achieves the noise figure of 4dB, Forward gain (S21) parameter of 14.7dB, and the small chip size of 0.26 mm, while 0.8mW power consuming from a 1.1V in 130nm CMOS gives the better noise figure and improved the overall performance.
IJIREEICE
A novel method for error correction for Very-high frequency Omni Range (VOR) Azimuth is designed ... more A novel method for error correction for Very-high frequency Omni Range (VOR) Azimuth is designed and tested. The basic principle behind the working of VOR is enumerated. In the generation of phase difference at the airborne receiver, various errors occur which impair the effective working of VOR. The aggregate value of these errors will be around ±5 o. Broadcom BCM2836R processor is used in the Linux environment with Mathematica10. Wolfram language is used to realize Kalman filter. Incorporating the proposed method, the aggregate error is successfully reduced to around ±1 o. This improvement will benefit the air operators to have more aircraft density surrounding any airport/VOR area.
International Journal of VLSI Design & Communication Systems
This work is mainly to ensure the reliability of low power low noise amplifier design and analysi... more This work is mainly to ensure the reliability of low power low noise amplifier design and analysis which is useful for 4G receiver front ends in particularly WIMAX applications. The low noise amplifiers implemented by using different topologies namely (a) Cascoded Common source amplifier technique(b) Folded Cascode amplifier technique (c) Shunt feedback amplifier technique (d) Current reuse Common gate amplifier with gm boosted technique with 90 nm TSMC CMOS technology, which is used for WIMAX applications with 1V supply. In order to simulate and measurement the parameters such as Scattering parameters(S21, S12 S11. S22),noise-figure, input matching, output matching ,stability, linearity the Cadence ,Agilent technologies ADS and lab view graphical software have been used and Compare the performance of the various parameters .
International Journal of Computer Applications, Dec 28, 2011
Globally asynchronous locally synchronous (GALS) system architectures are known for low power con... more Globally asynchronous locally synchronous (GALS) system architectures are known for low power consumption through clock gating techniques. In GALS architectures set of logical synchronous modules will communicate with other through asynchronous wrappers. Though this technique results in good dynamic power consumption, as the process technology shrinking down to 45nm and below the leakage power is equivalent to dynamic power consumption. In this paper, we are proposing a power gating technique for GALS architectures which uses existing handshaking signals of asynchronous wrappers to reduce both dynamic and leakage power consumption. To prove the proposed architecture we have implemented a GALS asynchronous micro controller from Daltons[1] synchronous 8051. For this we used Synopsys SAED 90nm library for synthesis and demonstrated the new proposed power gating control techniques through U.P.F (Unified Power Format) based simulation results.
ANovel APPROACH TO MINIMIZE SPARE CELL LEAKAGE POWER CONSUMPTION DURING PHYSICAL DESIGN IMPLEMENTATION
A Novel Design and Analysis of 8-TAP Filter
International Journal of Advances in Engineering Sciences, Apr 15, 2011
A 3–10 GHz low power, low noise amplifier with 90nm, 1.2V standard CMOS technology
2015 IEEE International Conference on Electrical, Computer and Communication Technologies (ICECCT), 2015
This paper mainly deals with the communication in both Single and Multi user environment. On usag... more This paper mainly deals with the communication in both Single and Multi user environment. On usage is carried out this simulation of Wireless LAN, which highlights various aspects that happen in communication when more than one user gets involved. Bluetooth, IEEE802.11 standard uses these models to enable different usage models from networking to cable replacement. Implementation of these usage models and issues specific to Bluetooth protocol and IEEE802.11 protocol stack embedded into operating systems framework in order to ensure seamless integration. For Simulation of the above situation we are using MATLAB software.
The paper describes the combination of a ring laser gyro inertial navigation system (INS) and Tri... more The paper describes the combination of a ring laser gyro inertial navigation system (INS) and Trimble SSE GPS receivers. A software package for the strapdown system was developed using common terrestrial zero velocity (ZUPT) and coordinate update (CUPT) techniques. An Integrated GPS inertial position and attitude control system (IGIPACS) is built up in different levels. The first level is a
IOSR journal of VLSI and Signal Processing, 2014
2.5 GHz narrow band inductive degenerated (LNA) low noise amplifier implemented in a 0.18 µm RF C... more 2.5 GHz narrow band inductive degenerated (LNA) low noise amplifier implemented in a 0.18 µm RF CMOS process which is used in particularly telecommand system for satellite and also for WSN (Wireless sensor networks. The amplifier provides a forward gain (S 21) of ˃ 16 db with a noise figure of S 11 ˂ 2db. While drawing of 10 mw from 1.8v Supply by using inductive coupled degenerated LNA.
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Papers by N S MURTI SARMA