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Thinning is a process of reducing an object in a digital image to the minimum size necessary for machine recognition of that object. Efficient and reliable thinning of image patterns is essential to a variety of applications in the field of image analysis and recognition system. In this paper we propose two new iterative algorithms for thinning binary(More)
Wireless Sensor Networks represents a new pattern for extracting the data from the environment for many agricultural, industrial and scientific applications. Data gathering protocols are formulated for configuring the network and collecting the information from the desired environment. Sensors have limited battery power and the communication module consumes(More)
Sink relocation is essential in wireless sensor network since relocating sink can balance the traffic load in the midst of multiple nodes and thereby decrease the miss rate of real-time packets. The main constraint in wireless sensor networks is limited energy supply at the sensor nodes so it is important to deploy the sink at a position with respect to the(More)
An integral aspect for designing any efficient wireless sensor network is the conservation of energy and the optimization of the power consumption. Continuous and prolonged availability of power plays a vital role in keeping the sensors energized. The power required by the sensors is largely dependent on their batteries which may require regular recharging(More)
RF mixer is an essential part of wireless communication system. modern wireless communication systems demand stringent dynamic range requirements. The dynamic range of a receiver is often limited by the first down conversion mixer. This forces many compromises between figures of merits such as conversion gain, linearity, dynamic range, noise figure and port(More)
Sensor nodes carry limited generally irreplaceable power sources. One of the major problems while handling the wireless sensor network is the limited availability of the power for the sensor nodes. Due to this energy constrain the data needs to be managed wisely in order to extend the lifetime of the network. In many scenarios sensor nodes will have to rely(More)
Wireless Sensor Networks comprises of large number of sensors which are deployed in the network. These sensors are battery operated devices and energy constraint is the main problem that needs to be addressed effectively and efficiently. In order to overcome the problems that arise due to energy hole and multi hop transmission a Hybrid model of Sink(More)
In a multiuser channel signals are corrupted due to Additive White Gaussian Noise (AWGN) and Inter Carrier Interference (ICI). Orthogonal Frequency Division Multiplexing (OFDM) receiver detects the symbols or bits and estimates the parameters. Wavelet Packet Modulation (WPM) is applied to the received symbols that have been previously coded at the(More)
With the current state of affairs in the development of antennas in the wireless communication field, the need of compact multiband, multifunctional and cost effective antenna is increased. The study of reconfigurable antennas has made great progress in recent years. They are lighter in weight, smaller in dimension and lower in price. Again, the(More)