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This paper deals about employing wavelet based and SVD based watermarking for image forensics. The paper proposes ways of tampering detection from the watermark without actually using the original image (blind detection). This computation is done based on the positional values for the wavelet based watermarking and using the singular plane in the SVD method. We detect whether tampering has been done...
The paper proposes a Quad-band rectangular planar monopole antenna structure that can be used in GSM-900, GSM-1800, GSM-1900 and ISM band. The proposed geometry is simulated using IE3D simulator and fabricated on FR-4 substrate. The simulated S-parameter result clearly indicates the presence of all four desired bands. Prior to fabrication other output curves like radiation pattern, efficiency and...
To increase data rate of wireless medium with high performance, orthogonal frequency division multiplexing (OFDM) is used. Recently wavelet transform is a possible transform to generate the sub channels in a multicarrier system. Discrete wavelet transform (DWT) is faster than fast Fourier transform (FFT) hence it's replaced by transform technique for OFDM so it is called as orthogonal wavelet division...
The patients in rural areas lose their lives due to the unavailability of proper healthcare at the right time. This research work aims to develop a system suitable for continuous and real-time monitoring of rural patients to enhance healthcare facilities. The proposed system integrates existing and freely available mobile technology with wearable wireless sensors for patient monitoring. This research...
In the era of information technology explosion in mobile communications, many computationally challenging problem are encountered on surfing of complex scene in the multi-window environment. In this paper, we address the issue of texture based multi-intensity analysis for multiwindow overlapping. In current literature, the various methods have suggested for texture analysis but there are abundant...
Multiple Input Multiple Output(MIMO) has been remained in much importance in recent past because of high capacity gain over a single antenna system. In this article, analysis over the capacity of the MIMO channel systems with spatial channel has been considered when the channel state information(CSI) is considered imperfect or partial. The dynamic CSI model has also been tried consisting channel mean...
The foundation of Optimal Routing Path (ORP) has been proposed with the introduction of cluster-based approach for mobile cellular networks in this paper. The computations of all possible candidate paths and thereby, selection of the least congested path is done by cluster-heads only. Significant reduction of backtracking has been achieved resulting in optimization of the incurred time delay.
Due to the enormous increase in image database sizes, as well as its vast deployment in various applications, the need for an efficient image retrieval system development arises. Present retrieval systems lack in some aspect or other to get accurate results. To retrieve the results on a subjective basis we have integrated all the feature vectors (namely color, texture and shape) and user can choose...
Wireless Sensor Networks (WSNs) consist of distributed autonomous devices which sense the environmental or physical conditions cooperatively and pass the information through the network to a base station. Sensor Localization is a fundamental challenge in WSN. Location information of the node is critically important to detect an event or to route the packet via the network. In this paper localization...
In the wireless world, the demand for advanced information services is growing. Voice and low-rate data services are insufficient in a world where high-speed internet access is taken for granted. The trend is toward global information networks that offer flexible multimedia information services to users on demand, anywhere, anytime. The third-generation (3G) mobile communication (International Mobile...
The kernel functions are playing a very important role in machine learning. In this paper, the speech recognition problem is considered as a machine learning problem. The new kernel function called Linear-Polynomial kernel (LP) used to design the support vector machines for speech recognition for improving the generalization performance of speech recognition. The LP kernel performance is very good...
Wired Equivalent Privacy (WEP) protocol was adopted to protect authorized users from unauthorized access and eavesdropping in the IEEE 802.11 wireless LANs (WLAN). However, it has been proved that the WEP protocol fails to provide data confidentiality and authentication. The WEP provides encrypted communication using an encryption key between the client station and Access point (AP). All client stations...
The advent of mobile ad hoc (MANET) network had spurred in a new era of communication where users (nodes) communicate with each other via a self configuring infrastructure less network of mobile devices connected by wireless links. Nodes can participate both as a host as well as a router willing to forward packets for other nodes. So here arises the need of a routing protocol. Now the dynamic topology...
The focus of this paper is towards developing an application specific design methodology for low power solutions in recursive coding system. The methodology starts from high level models which can be used for software solution and proceeds towards high performance hardware solutions. Recursive encoder/decoder, a key component of the emerging 3G mobile communications is used for the implementation...
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