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Evolutionary optimization algorithms have been recently applied to optimal digital IIR filter design. In this paper, we apply a bandwidth adaptive harmony search (BAHS) algorithm to the design of 1-dimensional IIR filters. Harmony search is an evolutionary algorithm, which emulates the improvisation process of musicians. We have modified the algorithm by setting the bandwidth equal to the standard...
The land use or land cover map depicts the physical coverage of the Earth's terrestrial surface according to its use (viz. vegetation, habitation, water body, bare soil, artificial structures etc.). Land use map generation from remotely sensed images is one of the challenging task of remote sensing technology. In this article, motivated from group forming behaviour of real ants, we have proposed two...
Invasive weed optimization (IWO) has been found to be a simple but powerful algorithm for function optimization over continuous spaces. It has reportedly outperformed many types of evolutionary algorithms and other search heuristics when tested over both benchmark and real-world problems. This article describes the design of fractional-order proportional-integral-derivative (FOPID) controllers, using...
Invasive weed optimization (IWO) has been found to be a simple but powerful algorithm for function optimization over continuous spaces. It has reportedly outperformed many types of evolutionary algorithms and other search heuristics when tested over both benchmark and real-world problems. However the performance of most search heuristics deteriorates severely when applied to the task of optimization...
In this paper, new configurations with two gap-coupled triangular microstrip antennas and its compact version have been investigated at S band. The gap coupled configuration yields 2.38 times and compact gap coupled configuration gives 2.65 times BW as compared to that of a corresponding equilateral triangular microstrip antenna (ETMSA). The area reduction for the latter configuration is by factor...
Wireless mesh based access networks are destined to play a pivotal role in next generation broadband systems. With the proliferation of mesh networks, a key issue for network designers is the design of an optimal mesh topology which minimizes cost while maintaining carrier-class features. In this paper, we formulate the design of an optimal mesh, taking network deployment cost, topological properties...
Modern weapon systems need to detect, recognize, and track a variety of targets under a wide spectrum of atmospheric conditions. They include stationary and mobile targets against complex backgrounds and landmines. A number of active systems like hybrid LIDAR-RADAR systems, heterodyne detection as well as passive systems like thermal imagers have been proposed and developed to meet this objective...
We present the results of several experiments in which nonlinear-optical processes are enhanced by introducing gases into the hollow core of a photonic bandgap fiber. Such fibers offer the potential of greatly enhancing nonlinear interactions
The design of the access networks of next generation broadband wireless systems requires special attention in the light of changing network characteristics. In this paper, we present a mesh-based distributed radio access network (RAN) framework for future wireless systems. Using short, high bandwidth optical wireless links to interconnect the various network elements, we identify a generic fractal...
PRISM, a computer architecture consisting of a general-purpose core processor and a reconfigurable FPGA platform, was designed to bridge the gap between general-purpose and specialized computers. PRISM-I, introduced a new concept wherein a custom architecture, utilizing the FPGAs, is dynamically and automatically created to execute a specific C program more efficiently. Speedup is achieved by executing...
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