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Mobile ad hoc network is a network of wireless node connected using wireless media. Each node operates as a router for all other nodes in the network. Nodes in MANET are mobile and hence change their topology dynamically. From one source to destination node there may be multiple paths. Due to wireless link mobile ad hoc networks are susceptible to many attacks. One popular attack on mobile ad hoc...
A novel frequency reconfigurable microstrip patch antenna with circular slot is presented in this paper. In the predictable design, there is a two diode are introduced with circular slot on the patch to produces four reconfigurable different frequency bands at 19.49 GHz, 19.56 GHz, 19.62 GHz and 20.27 GHz, respectively. The antenna is designed on FR-4 substrate with permittivity and thickness 4.1,...
A rectangular slot Micro strip Patch Antenna is designed with frequency ranging from 3 GHz to 12GHz with dual band function with its one band from 5–8.7 GHz frequency range and bandwidth of 3.7 GHz (calculated below −10dB) and another band operating on frequency range from 9.4–12GHz with bandwidth of 2.6 GHz (calculated below −10dB). Former is used for WLAN application and later for motion detectors...
One of the main problems in minimum invasive robotic surgery is effective control of the tracking error due to hand tremor. In this paper we review issues of hand tremor using surgical robot and propose a novel technique using wavelet transform with minimum coefficients to get a tremor free signal. In the parameter learning phase the error is minimized with minimum wavelet compression and as time...
In conventional technology, the Complementary Metal Oxide Semiconductor (CMOS) based transistors has many problems such as limited speed, high cost, high leakage current, larger size. A quantum dot cellular automata (QCA) is emerging as one of the important nanotechnology to overcome above problems. A number of QCA basic gates have been proposed in the literature for logic design. A novel design of...
A novel design technique of parabolic shape ground plane directional ultra-wideband (UWB) with circular patch antenna for airborne radar system is being presented here. The feed for the proposed directional ultra-wideband antenna is given by microstrip line and T-slots are inserted diagonally at the corners of parabolic ground plane in order to increase the directivity. The simulation analysis of...
A highly efficient differential cross coupled voltage controlled oscillator (VCO) with transformer tuning is presented here for V band (60 GHz) application. Here Tuning is done by on chip octagonal transformer which is used as inductive element in LC tank. This transformer tuning scheme gives three bands of frequency to cover 7 GHz bandwidth of 60 GHz unlicensed band and gives low phase noise as compared...
In this paper a new design of band notch UWB antenna which is Coplanar Waveguide (CPW) fed printed octagonal aperture antenna with back patch is presented. A rejected frequency band of 5–6 GHz is obtained by etching H shaped slot from back patch of conventional UWB antenna [1]. The proposed antenna is successfully simulated, fabricated and measured. Both impedance and radiation characteristics obtained...
In this paper, the problem of spare core position when faults occur at core on Network on Chip (NoC) is proposed. More precisely, a fine grained spare core position is proposed, which goes for enhancing the entire system performance and communication energy consumption, while considering the occurrence of permanent, transient and intermittent faults in the system. This method finds the spare core...
This paper proposes a dual band notched antenna which works for ultra-wide band applications. The antenna consists a square radiating patch with a wide S-slot and a modified U shaped slot and this antenna provide wide usable fractional bandwidth of more than 123% (2.91−12.17 GHz). Single band notched function is achieved by cutting S shaped slot and dual band notched function is achieved by cutting...
A key challenge in operating cognitive radios (CRs) in a self-organizing (ad hoc) network is to adaptively and efficiently allocate transmission powers and spectrum among CRs according to the surrounding environment. Cognitive radio networks provide high bandwidth to mobile users via heterogeneous wireless architectures and dynamic spectrum access techniques. CR networks inflict challenges due to...
This paper presents phasor assisted state estimation (PASE) via gauss newton method performed in rectangular co-ordinate. Phasor measurements collected by PMUs (phasor measurement unit) are added in existing conventional measurements scanned via remote terminal units (RTUs) through linear post processing step. Performance of presented phasor assisted state estimator is assessed by calculating average...
Since past few years there is tremendous advancement in electronic commerce technology, and the use of credit cards has increased dramatically. As credit card becomes the most popular mode of payment for both online as well as regular purchase, cases of fraud associated with it are also rising. In this paper the authors present the underlying theory of a hybrid model of an Intelligent Fraudulent Detection...
In this paper, a high rate compression of color images is achieved using colorization technique and smooth L0 (SL0) minimization. At encoder, the color image is converted into Ycbcr space. The luminance (Y) information of image is segmented using fuzzy-c-means to construct colorization matrix. This colorization matrix is used in choosing few important color representative pixels (RP) by applying SL0...
Present paper deals with design and development of digital FIR filters. Heart diseases, which are one of the death reasons, are among the several serious problems in this century and as per the latest survey, 60% of the patients die due to Heart diseases. Electrocardiogram (ECG) signal plays a vital role in the monitoring and diagnosis of the health conditions of human heart. The basic ECG signal...
Congestion in the traffic is the most basic problem that most of the cities facing now a days. This problem is mainly evolved due to increase in travel demand and limited scope of increasing the infrastructure needed to hold that traffic. So from there comes the concept of vehicle routing problem and thus the problem of School Bus Routing Problem (SBRP). In the past Hungarian Algorithm was used. Evolution...
Two metamaterial (MTM) microstrip patch antenna (MSPA) is presented in this paper. Herein two Reactive impedance surface (RIS) unit cells are studied and designed. The RIS unit cells are loaded with omega (O-RIS) and complementary omega (CO-RIS) shapes. Subsequently the unit cells are incorporated in the MSPA and observed the miniaturization. The antenna is designed at C-Band. The O-RIS MSPA resonant...
This paper addresses the problem of image denoising which is still a valid challenge for developing algorithms to reduce the noise that is inherent in all digital images. This paper presents efficient approach for denoising of noises in image. Several algorithms for noise reduction are well established in the domain of image processing. The aim of the paper is to characterize the salt-pepper, Gaussian...
This work proposes a design of single element and two element antenna array by using SIW (substrate integrated waveguide) technology. SIW techniques provides low cost, small size and convenient integration with planer circuit. Using antenna array enhance the directivity and gain of the proposed antenna. The dimension of proposed antenna is 37 × 45.5mm2 and substrate height is 1.6mm. The proposed antenna...
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